[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=13170


Zhang Rui <rui.zhang@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Config-Tables               |Video(DRI - non Intel)
         AssignedTo|acpi_config-tables@kernel-b |drivers_video-dri@kernel-bu
                   |ugs.osdl.org                |gs.osdl.org
            Product|ACPI                        |Drivers




--- Comment #46 from Zhang Rui <rui.zhang@intel.com>  2010-02-23 07:34:43 ---
so the original problem reported in this bug has been fixed.

and there are two problems left that sounds to be kernel related:
1. no backlight control
2. can not switch to text console.
right?

As there is no ACPI backlight control on this laptop, I'll re-assign this to
the VGA category as there is nothing we can do from ACPI point of view.

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[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

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--- Comment #47 from Alejandro Valenzuela <lanjoe9@mexinetica.com>  2010-02-23 09:17:25 ---
Well, it would seem so, but the problem still keeps on being, that the system
does _not_ boot without either command line options (for example, the way it
would be booted from a liveCD) or a "special" efi grub (which must be installed
after the installation from a liveCD has been completed). I would regard
booting via efi grub as a workaround, not as much of a solution..

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--- Comment #48 from ste <dummy.it@gmail.com>  2010-02-23 11:18:48 ---
http://bugzilla.kernel.org/show_bug.cgi?id=13170


>
> --- Comment #44 from Alejandro Valenzuela <lanjoe9@mexinetica.com>  2010-02-23 01:59:51 ---
> [..]
> The backlight control: it seems to me that it boots with whatever backlight
> setting it had last using OSX which is not too bad.
>

I can confirm this.


@Zhang Rui
I think the bug has not been fixed yet: in order to boot, you have to
build and install in the /EFI partition your own efi-grub..
I think this is just a workaround, not a solution.
Otherwise one could also boot with the standard grub/grub2 disabling
acpi (1 core, no battery level, etc..) - another workaround, not a
solution

@Alejandro Valenzuela
I'll try a more recent kernel/system to fix properly the audio and the
i-sight issues..

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[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

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--- Comment #49 from Zhang Rui <rui.zhang@intel.com>  2010-02-24 02:38:53 ---
(In reply to comment #48)
> 
> @Zhang Rui
> I think the bug has not been fixed yet: in order to boot, you have to
> build and install in the /EFI partition your own efi-grub..
> I think this is just a workaround, not a solution.

I agree.
But as this doesn't seem like a kernel issue that we can cover here, raising
this issue to Debian/ubuntu would be more helpful.

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[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

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--- Comment #50 from Alejandro Valenzuela <lanjoe9@mexinetica.com>  2010-02-24 08:01:43 ---
And gentoo, and every other linux that does not include an efi-grub bootloader
in their liveCD? Supposing booting from CD does not automatically set bios
emulation mode.. 

Also, both ubuntu ( https://bugs.launchpad.net/ubuntu/+source/linux/+bug/341230
) and debian ( http://wiki.debian.org/MacBook#WhatisaMacBook ) are aware of the
bug. But since it's a kernel bug affecting all distros (the problem occurs even
before the initramfs is loaded), it was raised here, in the kernel.org
bugzilla.

Or maybe I'm just not understanding what you suggest we do. Could you please
clarify?

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[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

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--- Comment #51 from David <dstansby@gmail.com>  2010-04-26 15:23:40 ---
As Alejanrdo says above, it's been raised in both debian and ubuntu for some
time now, and nothing seems to be happening there.

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[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

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Carlos Le Mare <carlos_lemare@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |carlos_lemare@yahoo.com




--- Comment #51 from David <dstansby@gmail.com>  2010-04-26 15:23:40 ---
As Alejanrdo says above, it's been raised in both debian and ubuntu for some
time now, and nothing seems to be happening there.

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[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

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--- Comment #52 from Carlos Le Mare <carlos_lemare@yahoo.com>  2010-05-10 22:16:49 ---
I see that the problem is assigned to drivers_video-dri@kernel-bugs.osdl.org,
however, the problem is the same is I use Restricted Drivers from NVidia or the
open one. I have a MacBook5,2... using Ubuntu 10.04 32 bits (64 bits won't boot
from the CD).

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[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

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--- Comment #53 from David <dstansby@gmail.com>  2010-05-11 16:44:22 ---
This seems to be fixed for me now that I've switched to the open source driver.

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[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

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--- Comment #54 from David <dstansby@gmail.com>  2010-05-17 15:19:13 ---
Sorry, getting confused between this and a screen brightness bug. This is
definitely not fixed

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[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

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--- Comment #55 from David <dstansby@gmail.com>  2010-07-22 15:43:42 ---
This is still a problem when booting from 2.6.35

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[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

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Martinez <martinezino@googlemail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |martinezino@googlemail.com




--- Comment #56 from Martinez <martinezino@googlemail.com>  2010-10-02 20:28:46 ---
=====================================================================

Here some informations about booting my hardware with the 2.6.18-194.11.1.el5
(CentOS5) kernel. 
This kernel have for sure some backports of newer kernels (looking into the src
rpm shows 111 patchfiles 
matching apic and acpi pattern).


=====================================================================
Boot list with arguments:
--------------------------------------------------------------------------------------

label linux0
    kernel linux
    append initrd=initrd.img root=/dev/sda3 acpi=force

label linux1
    kernel linux
    append initrd=initrd.img root=/dev/sda3 maxcpus=1

label linux2
    kernel linux
    append initrd=initrd.img root=/dev/sda3 acpi=noirq pnpacpi=off

label linux3
    kernel linux
    append initrd=initrd.img root=/dev/sda3 noapic irqpoll acpi=force

label linux4
    kernel linux
    append initrd=initrd.img root=/dev/sda3 acpi=off

label linux5
    kernel linux
    append initrd=initrd.img root=/dev/sda3 nosmp

label linux6
    kernel linux
    append initrd=initrd.img root=/dev/sda3 pci=noacpi pci=nomsi

label linux7
    kernel linux
    append initrd=initrd.img root=/dev/sda3 noapic

--------------------------------------------------------------------------------------
Kernel (linux0) with acpi=force doesn't boot, all others (linux1-7) do.

=====================================================================



=====================================================================
linux1 
--------------------------------------------------------------------------------------

cat /proc/cmdline /proc/acpi/processor/CPU*/info /proc/interrupts /proc/cpuinfo
initrd=initrd.img root=/dev/sda3 maxcpus=1 BOOT_IMAGE=linux 
processor id:            0
acpi id:                 0
bus mastering control:   no
power management:        yes
throttling control:      yes
limit interface:         yes
processor id:            1
acpi id:                 1
bus mastering control:   no
power management:        yes
throttling control:      yes
limit interface:         yes
           CPU0       
  0:      79729    IO-APIC-edge  timer
  8:          1    IO-APIC-edge  rtc
  9:        193   IO-APIC-level  acpi
 58:       4963         PCI-MSI  ahci
 74:          6         PCI-MSI  eth0
169:        158   IO-APIC-level  HDA Intel
209:        554   IO-APIC-level  ehci_hcd:usb1
217:          2   IO-APIC-level  ehci_hcd:usb2
225:         73   IO-APIC-level  ohci_hcd:usb3
233:        198   IO-APIC-level  ohci_hcd:usb4
NMI:         77 
LOC:      79616 
ERR:          0
MIS:          0
processor    : 0
vendor_id    : GenuineIntel
cpu family    : 6
model        : 23
model name    : Intel(R) Core(TM)2 Duo CPU     P7350  @ 2.00GHz
stepping    : 10
cpu MHz        : 1596.000
cache size    : 3072 KB
physical id    : 0
siblings    : 1
core id        : 0
cpu cores    : 1
apicid        : 0
fpu        : yes
fpu_exception    : yes
cpuid level    : 13
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx
fxsr sse sse2 ss ht tm syscall nx lm constant_tsc up pni monitor ds_cpl vmx est
tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips    : 3980.00
clflush size    : 64
cache_alignment    : 64
address sizes    : 36 bits physical, 48 bits virtual
power management:








=====================================================================
linux2
--------------------------------------------------------------------------------------


cat /proc/cmdline /proc/acpi/processor/CPU*/info /proc/interrupts /proc/cpuinfo
initrd=initrd.img root=/dev/sda3 acpi=noirq pnpacpi=off BOOT_IMAGE=linux 
processor id:            0
acpi id:                 0
bus mastering control:   no
power management:        yes
throttling control:      yes
limit interface:         yes
processor id:            1
acpi id:                 1
bus mastering control:   no
power management:        yes
throttling control:      yes
limit interface:         yes
           CPU0       
  0:      88982          XT-PIC  timer
  2:          0          XT-PIC  cascade
  5:          2          XT-PIC  ehci_hcd:usb2
  7:        215          XT-PIC  ohci_hcd:usb4
  8:          1          XT-PIC  rtc
  9:        166          XT-PIC  acpi
 10:        539          XT-PIC  ehci_hcd:usb1
 11:         73          XT-PIC  ohci_hcd:usb3
 15:        158          XT-PIC  HDA Intel
 81:       4704         PCI-MSI  ahci
 89:          6         PCI-MSI  eth0
NMI:         85 
LOC:      88881 
ERR:          0
MIS:          0
processor    : 0
vendor_id    : GenuineIntel
cpu family    : 6
model        : 23
model name    : Intel(R) Core(TM)2 Duo CPU     P7350  @ 2.00GHz
stepping    : 10
cpu MHz        : 1596.000
cache size    : 3072 KB
physical id    : 0
siblings    : 1
core id        : 0
cpu cores    : 1
apicid        : 0
fpu        : yes
fpu_exception    : yes
cpuid level    : 13
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx
fxsr sse sse2 ss ht tm syscall nx lm constant_tsc up pni monitor ds_cpl vmx est
tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips    : 3980.00
clflush size    : 64
cache_alignment    : 64
address sizes    : 36 bits physical, 48 bits virtual
power management:






=====================================================================
linux3
--------------------------------------------------------------------------------------

cat /proc/cmdline /proc/acpi/processor/CPU*/info /proc/interrupts /proc/cpuinfo
initrd=initrd.img root=/dev/sda3 noapic irqpoll acpi=force BOOT_IMAGE=linux 
processor id:            0
acpi id:                 0
bus mastering control:   no
power management:        yes
throttling control:      yes
limit interface:         yes
processor id:            1
acpi id:                 1
bus mastering control:   no
power management:        yes
throttling control:      yes
limit interface:         yes
           CPU0       
  0:      94891          XT-PIC  timer
  2:          0          XT-PIC  cascade
  5:          2          XT-PIC  ehci_hcd:usb2
  7:        254          XT-PIC  ohci_hcd:usb4
  8:          1          XT-PIC  rtc
  9:        189          XT-PIC  acpi
 10:        477          XT-PIC  ehci_hcd:usb1
 11:         73          XT-PIC  ohci_hcd:usb3
 15:        157          XT-PIC  HDA Intel
 81:       4928         PCI-MSI  ahci
 89:          7         PCI-MSI  eth0
NMI:         87 
LOC:      94699 
ERR:          4
MIS:          0
processor    : 0
vendor_id    : GenuineIntel
cpu family    : 6
model        : 23
model name    : Intel(R) Core(TM)2 Duo CPU     P7350  @ 2.00GHz
stepping    : 10
cpu MHz        : 1596.000
cache size    : 3072 KB
physical id    : 0
siblings    : 1
core id        : 0
cpu cores    : 1
apicid        : 0
fpu        : yes
fpu_exception    : yes
cpuid level    : 13
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx
fxsr sse sse2 ss ht tm syscall nx lm constant_tsc up pni monitor ds_cpl vmx est
tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips    : 3997.27
clflush size    : 64
cache_alignment    : 64
address sizes    : 36 bits physical, 48 bits virtual
power management:




=====================================================================
linux4
--------------------------------------------------------------------------------------
cat /proc/cmdline /proc/interrupts /proc/cpuinfo
initrd=initrd.img root=/dev/sda3 acpi=off BOOT_IMAGE=linux 
           CPU0       
  0:     109289          XT-PIC  timer
  2:          0          XT-PIC  cascade
  5:          2          XT-PIC  ehci_hcd:usb2
  7:       7733          XT-PIC  ohci_hcd:usb4
  8:          0          XT-PIC  rtc
 10:        593          XT-PIC  ehci_hcd:usb1
 11:         77          XT-PIC  ohci_hcd:usb3
 15:        158          XT-PIC  HDA Intel
 81:       5158         PCI-MSI  ahci
 89:          6         PCI-MSI  eth0
NMI:         86 
LOC:     109177 
ERR:          0
MIS:          0
processor    : 0
vendor_id    : GenuineIntel
cpu family    : 6
model        : 23
model name    : Intel(R) Core(TM)2 Duo CPU     P7350  @ 2.00GHz
stepping    : 10
cpu MHz        : 1990.019
cache size    : 3072 KB
physical id    : 0
siblings    : 1
core id        : 0
cpu cores    : 1
apicid        : 0
fpu        : yes
fpu_exception    : yes
cpuid level    : 13
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx
fxsr sse sse2 ss ht tm syscall nx lm constant_tsc up pni monitor ds_cpl vmx est
tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips    : 3980.03
clflush size    : 64
cache_alignment    : 64
address sizes    : 36 bits physical, 48 bits virtual
power management:




=====================================================================
linux5
--------------------------------------------------------------------------------------

cat /proc/cmdline /proc/acpi/processor/CPU*/info /proc/interrupts /proc/cpuinfo
initrd=initrd.img root=/dev/sda3 nosmp BOOT_IMAGE=linux 
processor id:            0
acpi id:                 0
bus mastering control:   no
power management:        yes
throttling control:      yes
limit interface:         yes
processor id:            1
acpi id:                 1
bus mastering control:   no
power management:        yes
throttling control:      yes
limit interface:         yes
           CPU0       
  0:     184531          XT-PIC  timer
  2:          0          XT-PIC  cascade
  5:          2          XT-PIC  ehci_hcd:usb2
  7:      22519          XT-PIC  ohci_hcd:usb4
  8:          1          XT-PIC  rtc
  9:        194          XT-PIC  acpi
 10:        798          XT-PIC  ehci_hcd:usb1
 11:         77          XT-PIC  ohci_hcd:usb3
 15:        158          XT-PIC  HDA Intel
 81:       5686         PCI-MSI  ahci
 89:          8         PCI-MSI  eth0
NMI:         89 
LOC:     184430 
ERR:          0
MIS:          0
processor    : 0
vendor_id    : GenuineIntel
cpu family    : 6
model        : 23
model name    : Intel(R) Core(TM)2 Duo CPU     P7350  @ 2.00GHz
stepping    : 10
cpu MHz        : 1596.000
cache size    : 3072 KB
physical id    : 0
siblings    : 1
core id        : 0
cpu cores    : 1
apicid        : 0
fpu        : yes
fpu_exception    : yes
cpuid level    : 13
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx
fxsr sse sse2 ss ht tm syscall nx lm constant_tsc up pni monitor ds_cpl vmx est
tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips    : 3980.00
clflush size    : 64
cache_alignment    : 64
address sizes    : 36 bits physical, 48 bits virtual
power management:







=====================================================================
linux6
--------------------------------------------------------------------------------------


cat /proc/cmdline /proc/acpi/processor/CPU*/info /proc/interrupts /proc/cpuinfo
initrd=initrd.img root=/dev/sda3 pci=noacpi pci=nomsi BOOT_IMAGE=linux 
processor id:            0
acpi id:                 0
bus mastering control:   no
power management:        yes
throttling control:      yes
limit interface:         yes
processor id:            1
acpi id:                 1
bus mastering control:   no
power management:        yes
throttling control:      yes
limit interface:         yes
           CPU0       
  0:      89609          XT-PIC  timer
  2:          0          XT-PIC  cascade
  5:          2          XT-PIC  ehci_hcd:usb2
  7:        217          XT-PIC  ohci_hcd:usb4
  8:          1          XT-PIC  rtc
  9:        192          XT-PIC  acpi
 10:        564          XT-PIC  ehci_hcd:usb1
 11:       4840          XT-PIC  ohci_hcd:usb3, ahci
 14:          7          XT-PIC  eth0
 15:        157          XT-PIC  HDA Intel
NMI:         84 
LOC:      89505 
ERR:          0
MIS:          0
processor    : 0
vendor_id    : GenuineIntel
cpu family    : 6
model        : 23
model name    : Intel(R) Core(TM)2 Duo CPU     P7350  @ 2.00GHz
stepping    : 10
cpu MHz        : 1596.000
cache size    : 3072 KB
physical id    : 0
siblings    : 1
core id        : 0
cpu cores    : 1
apicid        : 0
fpu        : yes
fpu_exception    : yes
cpuid level    : 13
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx
fxsr sse sse2 ss ht tm syscall nx lm constant_tsc up pni monitor ds_cpl vmx est
tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips    : 3980.00
clflush size    : 64
cache_alignment    : 64
address sizes    : 36 bits physical, 48 bits virtual
power management:




=====================================================================
linux7
--------------------------------------------------------------------------------------
cat /proc/cmdline /proc/acpi/processor/CPU*/info /proc/interrupts /proc/cpuinfo
initrd=initrd.img root=/dev/sda3 noapic BOOT_IMAGE=linux 
processor id:            0
acpi id:                 0
bus mastering control:   no
power management:        yes
throttling control:      yes
limit interface:         yes
processor id:            1
acpi id:                 1
bus mastering control:   no
power management:        yes
throttling control:      yes
limit interface:         yes
           CPU0       
  0:     112635          XT-PIC  timer
  2:          0          XT-PIC  cascade
  5:          2          XT-PIC  ehci_hcd:usb2
  7:       8043          XT-PIC  ohci_hcd:usb4
  8:          1          XT-PIC  rtc
  9:        193          XT-PIC  acpi
 10:        545          XT-PIC  ehci_hcd:usb1
 11:        662          XT-PIC  ohci_hcd:usb3
 15:        159          XT-PIC  HDA Intel
 81:       7288         PCI-MSI  ahci
 89:          7         PCI-MSI  eth0
NMI:         91 
LOC:     112532 
ERR:          0
MIS:          0
processor    : 0
vendor_id    : GenuineIntel
cpu family    : 6
model        : 23
model name    : Intel(R) Core(TM)2 Duo CPU     P7350  @ 2.00GHz
stepping    : 10
cpu MHz        : 1596.000
cache size    : 3072 KB
physical id    : 0
siblings    : 1
core id        : 0
cpu cores    : 1
apicid        : 0
fpu        : yes
fpu_exception    : yes
cpuid level    : 13
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx
fxsr sse sse2 ss ht tm syscall nx lm constant_tsc up pni monitor ds_cpl vmx est
tm2 ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips    : 3980.00
clflush size    : 64
cache_alignment    : 64
address sizes    : 36 bits physical, 48 bits virtual
power management:







=====================================================================

If requested, i can provide dmesg output.

=====================================================================

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--- Comment #57 from David <dstansby@gmail.com>  2010-10-28 14:29:29 ---
Still an issue on 2.6.36-1

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--- Comment #58 from David <dstansby@gmail.com>  2010-12-17 18:03:45 ---
New comment downstream saying:

"I've got Ubuntu 10.10 (2.6.35-23-generic #41-Ubuntu SMP) booting using
my old grub 1.97 (that was booting Ubuntu 9.04) compiled as so:

./configure --with-platform=efi --target=x86_64
make
./grub-mkimage -d . -o grub.efi acpi boot chain configfile ext2 fat hfsplus
normal part_gpt sh

Then my grub.cfg has

menuentry "linux latest" {
 root=(hd0,3)
 fakebios
 linux /vmlinuz root=/dev/sda3 video=efifb agp=off acpi=force
 initrd /initrd.img
}

I've got 2 CPUs, ACPI (sleep, reboot, poweroff, battery/power) - my next
step will be to try a newer version of grub2."

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--- Comment #59 from Carlos Le Mare <carlos_lemare@yahoo.com>  2011-01-16 22:35:04 ---
@David:

I tried to use video=efifb agp=off acpi=force with grub 1.98 that comes with
Ubuntu installation without luck.

I would like to try grub 1.97 however I don't know How to install it. I
compiled the program with those options, then did the grub-mkimage thing and
then I did a make install but when I reboot I got grub 1.98 menu (!?). If
someone enlighten me on how to install grub 1.97 :-)

clemare

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Gregory Bellier <dest@gatekeeper.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dest@gatekeeper.fr




--- Comment #60 from Gregory Bellier <dest@gatekeeper.fr>  2011-02-19 15:58:42 ---
I also have a MacBook 5,2 (early 2009) and I experience the same errors than
you do. This has been tested on Ubuntu 10.10

I managed to build a grub2 1.99rc1 x86_64-efi.
I had to do some tweaks to make some progress. I'm hacking directly in grub.cfg
but from now, I don't care, I just want to test. So here is my entry :
menuentry 'Ubuntu, with Linux 2.6.35-25-generic' --class ubuntu --class
gnu-linux --class gnu --class os {
        insmod part_gpt
        insmod ext2
        set debug=video
        insmod efi_gop
        set root='(hd0,gpt3)'
        search --no-floppy --fs-uuid --set=root
d5175c18-7da2-49a9-a3af-844bad27c91d
        linux   /boot/vmlinuz-2.6.35-25-generic
root=UUID=d5175c18-7da2-49a9-a3af-844bad27c91d ro
        initrd  /boot/initrd.img-2.6.35-25-generic
}

The options are pretty much the same than the ones from my working grub (with
maxcpus=1).

At my first boot, I got "error: no argument specified". From what I've seen on
the internet, it's because the syntax is different between Grub 1.98 and
1.99rc1. In 1.98 it's --set d5175c18... while --set=root is needed for 1.99rc1.
However, this error wasn't a real problem because we're asked to press a key
and then the boot continues.

It continues until the second error: "error: no suitable mode found". I've
resolved this error by putting "set debug=video" and  "insmod efi_gop" in my
grub entry.

>From this point, I can see that the kernel starts booting until the error I now
have which I haven't solved yet : "fb: conflicting fb hw usage nouveaufb vs EFI
VGA - removing generic driver".

I hope this post will help some of you to make some progress until the point
I've reached.

I also tried what comment #58 detailed but I have the very same error :
conflicting fb...

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--- Comment #61 from Gregory Bellier <dest@gatekeeper.fr>  2011-03-09 17:08:26 ---
Hi !

After some digging, I'm now able to boot on Linux using a Macbook 5.2 and with
two cores.

refit + grub-pc with maxcpus = 1 => ok but only one core
refit + grub1.99-rc1 (efi and x86_64) => ok with two cores.

As I previously said, I managed to boot on the kernel but faced an error (or
should I say a new one) : "fb: conflicting fb hw usage nouveaufb vs EFI
VGA - removing generic driver".

This is due to a bug which I presume is in Nouveau. I reported it here:
https://bugs.freedesktop.org/show_bug.cgi?id=34508

To sum up, grub2 built for efi and x86_64 placed in the EFI partition. Within
the grub.cfg :
menuentry 'Linux without bios dump' {
        insmod efi_gop
        search --no-floppy --fs-uuid --set=root
d5175c18-7da2-49a9-a3af-844bad27c91d
        linux   /vmlinuz root=UUID=d5175c18-7da2-49a9-a3af-844bad27c91d ro
        initrd  /initrd.img
}
AND the final piece, NVidia driver then you'll be able to boot directly from
EFI to have the 2 cores.

There are several problems here.

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--- Comment #62 from Gregory Bellier <dest@gatekeeper.fr>  2011-04-06 12:55:00 ---
I now have newer informations.

I've been able to boot on Ubuntu 10.10 64 bits with Grub-EFI and Nouveau
involved but it needs a 2.6.38.2 (at least, it's the one I have tested). I
couldn't make it work with the 2.6.35.

I now have 2 cores.

If you want to stick with the 2.6.35, I've been able to have the 2 cores but
with the Nvidia Binary. And with this latter, to change the brightness is a
pain.

To sum up :

refit + grub-pc + nouveau => works if maxcpus=1 as a grub option.
refit + grub-efi + nouveau => doesn't work. Can't fully boot.
refit + grub-efi + nvidia binary => works and you have 2 cores, 3D and compiz
effect but it's a real pain to change the brightness plus it's a blob.
refit + grub-efi + nouveau WITH a kernel at least 2.6.38 => works like a charm
: 2 cores, 2D and you can change easily the brightness

I hope this can help some of you.

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Francisco <flopezluro@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |flopezluro@gmail.com




--- Comment #63 from Francisco <flopezluro@gmail.com>  2011-08-17 00:51:30 ---
Hi, I've been following this bug for a while since I've a macbook 5,2. I've
been able to use linux (ubuntu) with refit+grub-efi+nvidia driver for a while.
Last week I reinstalled everything, Snow Leopard, Win7 and Ubuntu natty,
everything works PERFECT using the same approach.

Today, I've upgraded the RAM, from 2 to 4 Gigs (removed 2x1Gb and put 2x2Gb).
Linux doesn't boot anymore with refit+grub-efi, only using maxcpus=1 or
acpi=off (still with Nvidia). The ram is OK, passes memtest86+, and win and
snow leopard work without any problem. If I remove ANY one of the memory chips
(1x2Gb 800Mhz) linux can boot again with grub-efi.

I guess this is probably a problem of grub-efi, but as it is related I wanted
to post it here, sorry if it's the wrong place.

Here you can see the boot error from grub-efi when booting with 4Gb.
http://picturepush.com/public/6333905

Please let me know if you want me to test anything in particular.
I have Natty with Nvidia 270.41.06, with uname -r: 2.6.38-10-generic

Sadly now I have to give up one CORE for 2gb of extra RAM :(

Thanks!
Francisco

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--- Comment #64 from dentament <l_done@tiscali.it>  2011-08-19 11:08:25 ---
Hi,
I boot with 2 cpus, acpi and everything working on ubuntu 10.04 using grub 1.99
compiled following these instructions:
https://help.ubuntu.com/community/UEFIBooting
and with this grub.cfg:

-----
insmod efi_gop
menuentry "Ubuntu Linux Lucid 2.6.32-33-generic" {
    set root='(hd0,3)'
    linux /boot/vmlinuz-2.6.32-33-generic root=/dev/sda3 video=efifb ro splash
    initrd /boot/initrd.img-2.6.32-33-generic
}
-----

But there's still a problem with this method (tried with various versions of
grub-efi): although it may seem the cpus do frequency switching allright, they
actually always work at their minimum speed. See:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/669865

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--- Comment #65 from Francisco <flopezluro@gmail.com>  2011-08-19 22:16:52 ---
Thanks for the link dentament!, I followed step by step the instructions from
your first link to compile grub-efi 1.99 (using bzr), with architecture x86_64.
I put this new grub efi, with the following grub.cfg entry, into my /efi/grub
folder under the MacOs partition (using rEfit to boot).

======================================================
set debug=video
insmod efi_gop
menuentry "Linux (2 cores) - without bios dump)" {
  search --file --no-floppy --set=root /vmlinuz
  fakebios
  linux /vmlinuz root=/dev/sda4 video=efifb
  initrd /initrd.img
}
======================================================

My macbook 5,2 is booting with both kernels, acpi, and the 4Gb
of RAM. Suspend and restart work. I am using Ubuntu Natty, 
default shell, 3d effects, "32 bits" kernel 2.6.38-11 and nvidia drivers
(suggested by ubuntu - 270.41.06). I installed this Linux from the 
standard 32 bits Desktop CD. 

Screen brightness doesn't work now, but I remember some time ago that 
it took me a while to get it working but it can be done.

The bug that you mention about the CPU throttling is not happening
here, I can change the speed and it gets reflected in the
right place (based on what the bug explains):
$ sudo cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq 
2128000
$ sudo cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq 
2128000

As one can always ask for more..., this is the output of free:
             total       used       free     shared    buffers     cached
Mem:       2829980     929848    1900132          0      78112     351680
-/+ buffers/cache:     500056    2329924
So it's not 4Gb (as far as I can see) but I am sure they are somewhere down
there...

I am glad to help to anyone giving more info about my system.

Thanks!,
Francisco

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--- Comment #66 from dentament <l_done@tiscali.it>  2011-08-20 12:30:02 ---
I've found out the cpu frequency scaling bug I mentioned in my comment is not a
bug (well, not a linux bug): it's a macbook "hardware feature" (or flaw?: I
can't understand why it's set up this way) to lock the 2 cpu cores to minimum
speed (1.60ghz) if the battery is not present, as in my case (I removed it
since I mostly use the laptop as a desktop and wanted to preserve it).
With the battery mounted, the frequency scaling behaves normally.

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Mikel Pr <mikeloco14@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mikeloco14@gmail.com




--- Comment #67 from Mikel Pr <mikeloco14@gmail.com>  2012-03-04 06:37:02 ---
Something happened in 3.2.0-17 or below that now lets these MacBooks boot with
both cores+ACPI (mine didn't before).

Whatever it was, please, don't reverse or modify it!!

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--- Comment #68 from Mikel Pr <mikeloco14@gmail.com>  2012-03-05 06:07:53 ---
MY apologies. While it does boot now without acpi=off or nosmp/maxcpus=1, only
one core is reported in /proc/cpuinfo and in Ubuntu's system-report option in
12.04.

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garegin <garegin16@gmail.com> changed:

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----------------------------------------------------------------------------
                 CC|                            |garegin16@gmail.com




--- Comment #69 from garegin <garegin16@gmail.com>  2012-03-24 14:46:04 ---
the "bug" you mentioned has been a normal feature in cpus for a long time.
under regular load the cpu is underclocked from its native frequency. there is
also turboboost which does the opposite (overclock under high load).

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Alan <alan@lxorguk.ukuu.org.uk> changed:

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----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
                 CC|                            |alan@lxorguk.ukuu.org.uk
         Resolution|                            |OBSOLETE




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Alan <alan@lxorguk.ukuu.org.uk> changed:

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----------------------------------------------------------------------------
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Zhang Rui <rui.zhang@intel.com> changed:

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morten vermund <mortenvermund@gmail.com> changed:

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----------------------------------------------------------------------------
                 CC|                            |mortenvermund@gmail.com

--- Comment #70 from morten vermund <mortenvermund@gmail.com> ---
(In reply to Alex Murray from comment #40)
> It may not be relevant, but apparently the same non-bootable issue has been
> seen on the MacBook Air 2,1 - which was solved (ie. without resorting to
> maxcpus=1 or noacpi) with the following options:
> 
> acpi=noirq pnpacpi=off
> 
> (originally from here: http://www.bank-i-danmark.dk/nordea-bank-koebenhavn-k-strandgade-3.html)

I also encounter same issue with my blog (http://bloggis.se/billigalaan )

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--- Comment #71 from morten vermund <mortenvermund@gmail.com> ---
(In reply to dentament from comment #64)
> Hi,
> I boot with 2 cpus, acpi and everything working on ubuntu 10.04 using grub
> 1.99 compiled following these instructions:
> https://help.ubuntu.com/community/UEFIBooting
> and with this grub.cfg:
> 
> -----
> insmod efi_gop
> menuentry "Ubuntu Linux Lucid 2.6.32-33-generic" {
> 	set root='(hd0,3)'
> 	linux /boot/vmlinuz-2.6.32-33-generic root=/dev/sda3 video=efifb ro splash
> 	initrd /boot/initrd.img-2.6.32-33-generic
> }
> -----http://www.hlrevision.dk
> 
> But there's still a problem with this method (tried with various versions of
> grub-efi): although it may seem the cpus do frequency switching allright,
> they actually always work at their minimum speed. See:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/669865

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--- Comment #72 from morten vermund <mortenvermund@gmail.com> ---
(In reply to Francisco from comment #63)
> Hi, I've been following this bug for a while since I've a macbook 5,2. I've
> been able to use linux (ubuntu) with refit+grub-efi+nvidia driver for a
> while. Last week I reinstalled everything, Snow Leopard, Win7 and Ubuntu
> natty, everything works PERFECT using the same approach.
> 
> Today, I've upgraded the RAM, from 2 to 4 Gigs (removed 2x1Gb and put
> 2x2Gb). Linux doesn't boot anymore with refit+grub-efi, only using maxcpus=1
> or acpi=off (still with Nvidia). The ram is OK, passes memtest86+, and win
> and snow leopard work without any problem. If I remove ANY one of the memory
> chips (1x2Gb 800Mhz) linux can boot again with grub-efi.
> 
> I guess this is probably a problem of grub-efi, but as it is related I
> wanted to post it here, sorry if it's the wrong place.
> 
> Here you can see the boot error from grub-efi when booting with 4Gb.
> http://www.billigalaan.se
> 
> Please let me know if you want me to test anything in particular.
> I have Natty with Nvidia 270.41.06, with uname -r: 2.6.38-10-generic
> 
> Sadly now I have to give up one CORE for 2gb of extra RAM :(
> 
> Thanks!
> Francisco

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--- Comment #73 from morten vermund (mortenvermund@gmail.com) ---
(In reply to Alex Murray from comment #40)
> It may not be relevant, but apparently the same non-bootable issue has been
> seen on the MacBook Air 2,1 - which was solved (ie. without resorting to
> maxcpus=1 or noacpi) with the following options:
> 
> acpi=noirq pnpacpi=off
> 
> (originally from here:
> https://web.bricksite.net/u77w/realmoneycasinos/online-casinos.html)

https://web.bricksite.net/u77w/realmoneycasinos/

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[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=13170

--- Comment #74 from morten vermund (mortenvermund@gmail.com) ---
(In reply to morten vermund from comment #71)
> (In reply to dentament from comment #64)
> > Hi,
> > I boot with 2 cpus, acpi and everything working on ubuntu 10.04 using grub
> > 1.99 compiled following these instructions:
> > https://webonlinegambling.com/
> > and with this grub.cfg:
> > 
> > -----
> > insmod efi_gop
> > menuentry "Ubuntu Linux Lucid 2.6.32-33-generic" {
> >       set root='(hd0,3)'
> >       linux /boot/vmlinuz-2.6.32-33-generic root=/dev/sda3 video=efifb ro
> > splash
> >       initrd /boot/initrd.img-2.6.32-33-generic
> > }
> > -----https://njonlinecasinos.webgarden.com/
> > 
> > But there's still a problem with this method (tried with various versions
> of
> > grub-efi): although it may seem the cpus do frequency switching allright,
> > they actually always work at their minimum speed. See:
> > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/669865

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[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=13170

--- Comment #75 from morten vermund (mortenvermund@gmail.com) ---
(In reply to danny.piccirillo from comment #34)
> I ran into this installing Ubuntu on a friend's machine (the newer MacBook
> 5,2 http://en.wikipedia.org/wiki/MacBook#Model_specifications released May
> 27, 2009). 
> 
> Potentially helpful information: https://playlegalsportsbetting.com/
> 
> Someone found that /proc/cpuinfo reports the CPU as being single core, even
> though it is actually dual core. From
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/341230
> 
> When booting without any of the options as a workaround for this bug, the
> screen goes blank and for a brief moment i see "[5.162415] Not responding"
> before the screen goes blank once again. I uploaded a video of this to
> http://www.archive.org/details/FuckingMacs but it is temporary and will
> disappear after a few days. Anybody know a better place to host? 
> 
> How can i help? What other info is needed for this bug?

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[Bug 13170] Macbook 5,2 only boots with acpi=off, or nosmp, or maxcpus=1

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=13170

--- Comment #76 from morten vermund (mortenvermund@gmail.com) ---
(In reply to danny.piccirillo from comment #34)
> I ran into this installing Ubuntu on a friend's machine (the newer MacBook
> 5,2 http://en.wikipedia.org/wiki/MacBook#Model_specifications released May
> 27, 2009). 
> 
> Potentially helpful information: 
> 
> Someone found that /proc/cpuinfo reports the CPU as being single core, even
> though it is actually dual core. From
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/341230
> 
> When booting without any of the options as a workaround for this bug, the
> screen goes blank and for a brief moment i see "[5.162415] Not responding"
> before the screen goes blank once again. I uploaded a video of this to
> https://casinowatchnj.com/tropicana-online-casino/ but it is temporary and
> will
> disappear after a few days. Anybody know a better place to host? 
> 
> How can i help? What other info is needed for this bug?

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