Kernel doesn't recognize complete memory

Kernel doesn't recognize complete memory

[Frank Fiene]

Lenovo Z61p, Intel Core2 Duo T7200

I have 4GB RAM installed and BIOS recognize 4GB RAM.
Linux kernel (Ubuntu-7.04, 32bit-PAE and 64bit, openSUSE-10.2 32bit-PAE 
and 64bit) tells me: only 3GB of RAM are installed.

Any other user with a 4GB Thinkpad? tytso?

What can i do? Please help!

Regards
Frank

Re: Kernel doesn't recognize complete memory

[Robert Hancock]

Frank Fiene wrote:
> Lenovo Z61p, Intel Core2 Duo T7200
> 
> I have 4GB RAM installed and BIOS recognize 4GB RAM.
> Linux kernel (Ubuntu-7.04, 32bit-PAE and 64bit, openSUSE-10.2 32bit-PAE 
> and 64bit) tells me: only 3GB of RAM are installed.
> 
> Any other user with a 4GB Thinkpad? tytso?
> 
> What can i do? Please help!
> 
> Regards
> Frank

Please post your bootup dmesg output. If your chipset doesn't support 
memory remapping above 4GB or the BIOS doesn't enable it, you won't be 
able to use all 4GB of memory.

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/

Re: Kernel doesn't recognize complete memory

[Russell Harmon]

http://kerneltrap.org/node/2450/7217 is likely your problem, although
why you can see 3gb instead of only 1gb of ram, idk... maybe something
ubuntu specific...

On 6/29/07, Frank Fiene <ffiene@veka.com> wrote:
> Lenovo Z61p, Intel Core2 Duo T7200
>
> I have 4GB RAM installed and BIOS recognize 4GB RAM.
> Linux kernel (Ubuntu-7.04, 32bit-PAE and 64bit, openSUSE-10.2 32bit-PAE
> and 64bit) tells me: only 3GB of RAM are installed.
>
> Any other user with a 4GB Thinkpad? tytso?
>
> What can i do? Please help!
>
> Regards
> Frank
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> Please read the FAQ at  http://www.tux.org/lkml/
>

Re: Kernel doesn't recognize complete memory

[Matti Aarnio]

On Fri, Jun 29, 2007 at 10:25:26PM +0200, Frank Fiene wrote:
> Lenovo Z61p, Intel Core2 Duo T7200
> 
> I have 4GB RAM installed and BIOS recognize 4GB RAM.
> Linux kernel (Ubuntu-7.04, 32bit-PAE and 64bit, openSUSE-10.2 32bit-PAE 
> and 64bit) tells me: only 3GB of RAM are installed.

With AMD's Athlon64 the answer would be "look into BIOS settings,
(re)map 3-4 GB memory above 4 GB address mark"..

The PCI-bus and all IO devices in it needs memory space within
the first 4 GB of physical address space.  Some devices support
64-bit addresses in which case they can access whole physical
memory, most probably don't, meaning that they can access only
memory in lowest 4 GB part of the space.

Original 8088 PC had 20 bit address space, and "huge" megabyte
of address space. Then came 286 AT era with 24 bit addresses
and "whopping" 16 megabyte address space..  then came 386 and
finally true 32-bit addresses -- but ISA-space VGA aperture had
to be in there still..  and to gain access to of that memory
located "under" that VGA aperture, there was mapping...

Now the VGA aperture mapping is no more, but the PCI has similar
requirements - albeit with bigger apertures.


So, what does your BIOS have hidden in "advanced" menus (most likely) ?
Something about "remap (PCI?) memory above 4 GB" ?


> Any other user with a 4GB Thinkpad? tytso?
> 
> What can i do? Please help!
> 
> Regards
> Frank

Regards, Matti Aarnio

Re: Kernel doesn't recognize complete memory

[Frank Fiene]

[-- Attachment #1: Type: text/plain, Size: 652 bytes --]

On Samstag, 30. Juni 2007, Robert Hancock wrote:
> Frank Fiene wrote:
> > Lenovo Z61p, Intel Core2 Duo T7200
> >
> > I have 4GB RAM installed and BIOS recognize 4GB RAM.
> > Linux kernel (Ubuntu-7.04, 32bit-PAE and 64bit, openSUSE-10.2
> > 32bit-PAE and 64bit) tells me: only 3GB of RAM are installed.
> >
> > Any other user with a 4GB Thinkpad? tytso?
> >
> > What can i do? Please help!
> >
> > Regards
> > Frank
>
> Please post your bootup dmesg output. If your chipset doesn't support
> memory remapping above 4GB or the BIOS doesn't enable it, you won't
> be able to use all 4GB of memory.

Here is me dmesg output, fist 400 lines.

Regards
Frank

[-- Attachment #2: dmesg.txt --]
[-- Type: text/plain, Size: 19157 bytes --]

Linux version 2.6.18.8-0.3-bigsmp (geeko@buildhost) (gcc version 4.1.2 20061115 (prerelease) (SUSE Linux)) #1 SMP Tue Apr 17 08:42:35 UTC 2007
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
 BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000dc000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 00000000bfed0000 (usable)
 BIOS-e820: 00000000bfed0000 - 00000000bfedf000 (ACPI data)
 BIOS-e820: 00000000bfedf000 - 00000000bff00000 (ACPI NVS)
 BIOS-e820: 00000000bff00000 - 00000000c0000000 (reserved)
 BIOS-e820: 00000000f0000000 - 00000000f4000000 (reserved)
 BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
 BIOS-e820: 00000000fed00000 - 00000000fed00400 (reserved)
 BIOS-e820: 00000000fed14000 - 00000000fed1a000 (reserved)
 BIOS-e820: 00000000fed1c000 - 00000000fed90000 (reserved)
 BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
 BIOS-e820: 00000000ff800000 - 0000000100000000 (reserved)
2174MB HIGHMEM available.
896MB LOWMEM available.
found SMP MP-table at 000f67e0
NX (Execute Disable) protection: active
On node 0 totalpages: 786128
  DMA zone: 4096 pages, LIFO batch:0
  Normal zone: 225280 pages, LIFO batch:31
  HighMem zone: 556752 pages, LIFO batch:31
DMI present.
Using APIC driver default
ACPI: RSDP (v002 LENOVO                                ) @ 0x000f67a0
ACPI: XSDT (v001 LENOVO TP-7F    0x00002180  LTP 0x00000000) @ 0xbfed1c26
ACPI: FADT (v003 LENOVO TP-7F    0x00002180 LNVO 0x00000001) @ 0xbfed1d00
ACPI: SSDT (v001 LENOVO TP-7F    0x00002180 MSFT 0x0100000e) @ 0xbfed1eb4
ACPI: ECDT (v001 LENOVO TP-7F    0x00002180 LNVO 0x00000001) @ 0xbfedebc1
ACPI: TCPA (v002 LENOVO TP-7F    0x00002180 LNVO 0x00000001) @ 0xbfedec13
ACPI: MADT (v001 LENOVO TP-7F    0x00002180 LNVO 0x00000001) @ 0xbfedec45
ACPI: MCFG (v001 LENOVO TP-7F    0x00002180 LNVO 0x00000001) @ 0xbfedecad
ACPI: HPET (v001 LENOVO TP-7F    0x00002180 LNVO 0x00000001) @ 0xbfedece9
ACPI: SLIC (v001 LENOVO TP-7F    0x00002180  LTP 0x00000000) @ 0xbfedee62
ACPI: BOOT (v001 LENOVO TP-7F    0x00002180  LTP 0x00000001) @ 0xbfedefd8
ACPI: SSDT (v001 LENOVO TP-7F    0x00002180 INTL 0x20050513) @ 0xbfef2686
ACPI: SSDT (v001 LENOVO TP-7F    0x00002180 INTL 0x20050513) @ 0xbfef28e5
ACPI: SSDT (v001 LENOVO TP-7F    0x00002180 INTL 0x20050513) @ 0xbfef298b
ACPI: SSDT (v001 LENOVO TP-7F    0x00002180 INTL 0x20050513) @ 0xbfef2e82
ACPI: DSDT (v001 LENOVO TP-7F    0x00002180 MSFT 0x0100000e) @ 0x00000000
ACPI: PM-Timer IO Port: 0x1008
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
Processor #0 6:15 APIC version 20
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
Processor #1 6:15 APIC version 20
ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 1, version 32, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: IRQ0 used by override.
ACPI: IRQ2 used by override.
ACPI: IRQ9 used by override.
Enabling APIC mode:  Flat.  Using 1 I/O APICs
ACPI: HPET id: 0x8086a201 base: 0xfed00000
Using ACPI (MADT) for SMP configuration information
Allocating PCI resources starting at c4000000 (gap: c0000000:30000000)
Detected 1995.077 MHz processor.
Built 1 zonelists.  Total pages: 786128
Kernel command line: root=/dev/sda2 vga=0x375 resume=/dev/sda1 splash=silent elevator=deadline PROFILE=haltern
bootsplash: silent mode.
mapped APIC to ffffd000 (fee00000)
mapped IOAPIC to ffffc000 (fec00000)
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 16384 bytes)
Console: colour dummy device 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 3110924k/3144512k available (1703k kernel code, 32200k reserved, 1103k data, 200k init, 2227008k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
hpet0: at MMIO 0xfed00000 (virtual 0xf8800000), IRQs 2, 8, 0
hpet0: 3 64-bit timers, 14318180 Hz
Using HPET for base-timer
Calibrating delay using timer specific routine.. 3994.38 BogoMIPS (lpj=7988774)
Security Framework v1.0.0 initialized
Mount-cache hash table entries: 512
CPU: After generic identify, caps: bfebfbff 20100000 00000000 00000000 0000e3bd 00000000 00000001
CPU: After vendor identify, caps: bfebfbff 20100000 00000000 00000000 0000e3bd 00000000 00000001
monitor/mwait feature present.
using mwait in idle threads.
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 4096K
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 0
CPU: After all inits, caps: bfebfbff 20100000 00000000 00000940 0000e3bd 00000000 00000001
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
Compat vDSO mapped to ffffe000.
Checking 'hlt' instruction... OK.
SMP alternatives: switching to UP code
checking if image is initramfs... it is
Freeing initrd memory: 3266k freed
ACPI: Core revision 20060707
CPU0: Intel(R) Core(TM)2 CPU         T7200  @ 2.00GHz stepping 06
SMP alternatives: switching to SMP code
Booting processor 1/1 eip 3000
Initializing CPU#1
Calibrating delay using timer specific routine.. 3990.09 BogoMIPS (lpj=7980196)
CPU: After generic identify, caps: bfebfbff 20100000 00000000 00000000 0000e3bd 00000000 00000001
CPU: After vendor identify, caps: bfebfbff 20100000 00000000 00000000 0000e3bd 00000000 00000001
monitor/mwait feature present.
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 4096K
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 1
CPU: After all inits, caps: bfebfbff 20100000 00000000 00000940 0000e3bd 00000000 00000001
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#1.
CPU1: Intel(R) Core(TM)2 CPU         T7200  @ 2.00GHz stepping 06
Total of 2 processors activated (7984.48 BogoMIPS).
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 apic1=0 pin1=2 apic2=-1 pin2=-1
checking TSC synchronization across 2 CPUs: 
CPU#0 had -154 usecs TSC skew, fixed it up.
CPU#1 had 154 usecs TSC skew, fixed it up.
Brought up 2 CPUs
migration_cost=36
NET: Registered protocol family 16
ACPI: bus type pci registered
PCI: Using MMCONFIG
Setting up standard PCI resources
ACPI: Found ECDT
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 9 10 *11)
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI: Probing PCI hardware (bus 00)
PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.1
Boot video device is 0000:01:00.0
PCI: Transparent bridge - 0000:00:1e.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: Embedded Controller [EC] (gpe 28) interrupt mode.
ACPI: Power Resource [PUBS] (on)
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.AGP_._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP1._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP2._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP3._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCI1._PRT]
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI init
pnp: PnP ACPI: found 12 devices
PnPBIOS: Disabled by ACPI PNP
PCI: Using ACPI for IRQ routing
PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post a report
PCI: Bridge: 0000:00:01.0
  IO window: 2000-2fff
  MEM window: ee000000-ee0fffff
  PREFETCH window: d0000000-dfffffff
PCI: Bridge: 0000:00:1c.0
  IO window: disabled.
  MEM window: ee100000-ee1fffff
  PREFETCH window: disabled.
PCI: Bridge: 0000:00:1c.1
  IO window: 3000-4fff
  MEM window: ec000000-edffffff
  PREFETCH window: e4000000-e40fffff
PCI: Bridge: 0000:00:1c.2
  IO window: 5000-6fff
  MEM window: e8000000-e9ffffff
  PREFETCH window: e4100000-e41fffff
PCI: Bridge: 0000:00:1c.3
  IO window: 7000-8fff
  MEM window: ea000000-ebffffff
  PREFETCH window: e4200000-e42fffff
PCI: Bus 22, cardbus bridge: 0000:15:00.0
  IO window: 00009000-000090ff
  IO window: 00009400-000094ff
  PREFETCH window: e0000000-e1ffffff
  MEM window: e6000000-e7ffffff
PCI: Bridge: 0000:00:1e.0
  IO window: 9000-cfff
  MEM window: e4300000-e7ffffff
  PREFETCH window: e0000000-e3ffffff
ACPI: PCI Interrupt 0000:00:01.0[A] -> GSI 16 (level, low) -> IRQ 169
PCI: Setting latency timer of device 0000:00:01.0 to 64
ACPI: PCI Interrupt 0000:00:1c.0[A] -> GSI 20 (level, low) -> IRQ 177
PCI: Setting latency timer of device 0000:00:1c.0 to 64
ACPI: PCI Interrupt 0000:00:1c.1[B] -> GSI 21 (level, low) -> IRQ 185
PCI: Setting latency timer of device 0000:00:1c.1 to 64
ACPI: PCI Interrupt 0000:00:1c.2[C] -> GSI 22 (level, low) -> IRQ 193
PCI: Setting latency timer of device 0000:00:1c.2 to 64
ACPI: PCI Interrupt 0000:00:1c.3[D] -> GSI 23 (level, low) -> IRQ 201
PCI: Setting latency timer of device 0000:00:1c.3 to 64
PCI: Enabling device 0000:00:1e.0 (0005 -> 0007)
PCI: Setting latency timer of device 0000:00:1e.0 to 64
ACPI: PCI Interrupt 0000:15:00.0[A] -> GSI 16 (level, low) -> IRQ 169
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 7, 524288 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
Simple Boot Flag at 0x35 set to 0x1
apm: BIOS not found.
audit: initializing netlink socket (disabled)
audit(1183129582.972:1): initialized
highmem bounce pool size: 64 pages
Total HugeTLB memory allocated, 0
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
Initializing Cryptographic API
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered (default)
io scheduler cfq registered
PCI: Setting latency timer of device 0000:00:01.0 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:01.0:pcie00]
Allocate Port Service[0000:00:01.0:pcie03]
PCI: Setting latency timer of device 0000:00:1c.0 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:1c.0:pcie00]
Allocate Port Service[0000:00:1c.0:pcie02]
Allocate Port Service[0000:00:1c.0:pcie03]
PCI: Setting latency timer of device 0000:00:1c.1 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:1c.1:pcie00]
Allocate Port Service[0000:00:1c.1:pcie02]
Allocate Port Service[0000:00:1c.1:pcie03]
PCI: Setting latency timer of device 0000:00:1c.2 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:1c.2:pcie00]
Allocate Port Service[0000:00:1c.2:pcie02]
Allocate Port Service[0000:00:1c.2:pcie03]
PCI: Setting latency timer of device 0000:00:1c.3 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:1c.3:pcie00]
Allocate Port Service[0000:00:1c.3:pcie02]
Allocate Port Service[0000:00:1c.3:pcie03]
vesafb: framebuffer at 0xd0000000, mapped to 0xf8880000, using 15000k, total 16384k
vesafb: mode is 1600x1200x16, linelength=3200, pages=3
vesafb: protected mode interface info at c000:afd4
vesafb: pmi: set display start = c00cb05c, set palette = c00cb118
vesafb: scrolling: redraw
vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
bootsplash 3.1.6-2004/03/31: looking for picture...<6> silentjpeg size 112064 bytes,<6>...found (1600x1200, 62428 bytes, v3).
Console: switching to colour frame buffer device 196x71
fb0: VESA VGA frame buffer device
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
Real Time Clock Driver v1.12ac
hpet_resources: 0xfed00000 is busy
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
floppy0: no floppy controllers found
RAMDISK driver initialized: 16 RAM disks of 64000K size 1024 blocksize
PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12
serio: i8042 AUX port at 0x60,0x64 irq 12
serio: i8042 KBD port at 0x60,0x64 irq 1
mice: PS/2 mouse device common for all mice
input: PC Speaker as /class/input/input0
input: AT Translated Set 2 keyboard as /class/input/input1
md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: bitmap version 4.39
NET: Registered protocol family 1
Using IPI No-Shortcut mode
ACPI: (supports S0 S3 S4 S5)
Freeing unused kernel memory: 200k freed
Time: tsc clocksource has been installed.
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
SCSI subsystem initialized
ACPI (exconfig-0455): Dynamic SSDT Load - OemId [ PmRef] OemTableId [ Cpu0Ist] [20060707]
ACPI (exconfig-0455): Dynamic SSDT Load - OemId [ PmRef] OemTableId [ Cpu0Cst] [20060707]
ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3])
ACPI: Processor [CPU0] (supports 8 throttling states)
ACPI (exconfig-0455): Dynamic SSDT Load - OemId [ PmRef] OemTableId [ Cpu1Ist] [20060707]
ACPI (exconfig-0455): Dynamic SSDT Load - OemId [ PmRef] OemTableId [ Cpu1Cst] [20060707]
ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
ACPI: Processor [CPU1] (supports 8 throttling states)
ACPI: Thermal Zone [THM0] (34 C)
ACPI: Thermal Zone [THM1] (39 C)
Time: hpet clocksource has been installed.
ICH7: IDE controller at PCI slot 0000:00:1f.1
ACPI: PCI Interrupt 0000:00:1f.1[C] -> GSI 16 (level, low) -> IRQ 169
ICH7: chipset revision 2
ICH7: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0x1880-0x1887, BIOS settings: hda:DMA, hdb:pio
Probing IDE interface ide0...
Synaptics Touchpad, model: 1, fw: 6.2, id: 0x81a0b1, caps: 0xa04793/0x300000
serio: Synaptics pass-through port at isa0060/serio1/input0
input: SynPS/2 Synaptics TouchPad as /class/input/input2
hda: HL-DT-ST DVDRAM GMA-4082N, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
libata version 2.00 loaded.
ahci 0000:00:1f.2: version 2.0
ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 16 (level, low) -> IRQ 169
PCI: Setting latency timer of device 0000:00:1f.2 to 64
ahci 0000:00:1f.2: AHCI 0001.0100 32 slots 4 ports 1.5 Gbps 0x1 impl SATA mode
ahci 0000:00:1f.2: flags: 64bit ncq pm led clo pio slum part 
ata1: SATA max UDMA/133 cmd 0xF883A500 ctl 0x0 bmdma 0x0 irq 66
ata2: SATA max UDMA/133 cmd 0xF883A580 ctl 0x0 bmdma 0x0 irq 66
ata3: SATA max UDMA/133 cmd 0xF883A600 ctl 0x0 bmdma 0x0 irq 66
ata4: SATA max UDMA/133 cmd 0xF883A680 ctl 0x0 bmdma 0x0 irq 66
scsi0 : ahci
ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata1.00: ATA-7, max UDMA/100, 195371568 sectors: LBA48 
ata1.00: ata1: dev 0 multi count 16
ata1.00: configured for UDMA/100
scsi1 : ahci
ata2: SATA link down (SStatus 0 SControl 0)
scsi2 : ahci
ata3: SATA link down (SStatus 0 SControl 0)
scsi3 : ahci
ata4: SATA link down (SStatus 0 SControl 0)
  Vendor: ATA       Model: ST910021AS        Rev: 4.06
  Type:   Direct-Access                      ANSI SCSI revision: 05
SCSI device sda: 195371568 512-byte hdwr sectors (100030 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
SCSI device sda: 195371568 512-byte hdwr sectors (100030 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
 sda: sda1 sda2
sd 0:0:0:0: Attached scsi disk sda
BIOS EDD facility v0.16 2004-Jun-25, 1 devices found
sd 0:0:0:0: Attached scsi generic sg0 type 0
kjournald starting.  Commit interval 5 seconds
EXT3 FS on sda2, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
IBM TrackPoint firmware: 0x0e, buttons: 3/3
input: TPPS/2 IBM TrackPoint as /class/input/input3
lp: driver loaded but no devices found
usbcore: registered new driver usbfs
usbcore: registered new driver hub
usbcore: registered new driver snd-usb-audio
intel_rng: FWH not detected
USB Universal Host Controller Interface driver v3.0
ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 16 (level, low) -> IRQ 169
PCI: Setting latency timer of device 0000:00:1d.0 to 64
uhci_hcd 0000:00:1d.0: UHCI Host Controller
uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 1
uhci_hcd 0000:00:1d.0: irq 169, io base 0x00001800
usb usb1: new device found, idVendor=0000, idProduct=0000
usb usb1: new device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: UHCI Host Controller
usb usb1: Manufacturer: Linux 2.6.18.8-0.3-bigsmp uhci_hcd
usb usb1: SerialNumber: 0000:00:1d.0
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
Linux agpgart interface v0.101 (c) Dave Jones
ACPI: PCI Interrupt 0000:00:1d.1[B] -> GSI 17 (level, low) -> IRQ 74
PCI: Setting latency timer of device 0000:00:1d.1 to 64
uhci_hcd 0000:00:1d.1: UHCI Host Controller
uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 2
uhci_hcd 0000:00:1d.1: irq 74, io base 0x00001820
usb usb2: new device found, idVendor=0000, idProduct=0000
usb usb2: new device strings: Mfr=3, Product=2, SerialNumber=1
usb usb2: Product: UHCI Host Controller
usb usb2: Manufacturer: Linux 2.6.18.8-0.3-bigsmp uhci_hcd
usb usb2: SerialNumber: 0000:00:1d.1
usb usb2: configuration #1 chosen from 1 choice
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
ACPI: PCI Interrupt 0000:00:1d.2[C] -> GSI 18 (level, low) -> IRQ 82
PCI: Setting latency timer of device 0000:00:1d.2 to 64
uhci_hcd 0000:00:1d.2: UHCI Host Controller
uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 3
uhci_hcd 0000:00:1d.2: irq 82, io base 0x00001840
usb usb3: new device found, idVendor=0000, idProduct=0000
usb usb3: new device strings: Mfr=3, Product=2, SerialNumber=1
usb usb3: Product: UHCI Host Controller
usb usb3: Manufacturer: Linux 2.6.18.8-0.3-bigsmp uhci_hcd
usb usb3: SerialNumber: 0000:00:1d.2
usb usb3: configuration #1 chosen from 1 choice
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 2 ports detected
ACPI: PCI Interrupt 0000:00:1d.7[D] -> GSI 19 (level, low) -> IRQ 90
PCI: Setting latency timer of device 0000:00:1d.7 to 64
ehci_hcd 0000:00:1d.7: EHCI Host Controller
ieee1394: Initialized config rom entry `ip1394'
ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 4
ehci_hcd 0000:00:1d.7: debug port 1
PCI: cache line size of 32 is not supported by device 0000:00:1d.7
ehci_hcd 0000:00:1d.7: irq 90, io mem 0xee404000
ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb4: new device found, idVendor=0000, idProduct=0000
usb usb4: new device strings: Mfr=3, Product=2, SerialNumber=1
usb usb4: Product: EHCI Host Controller
usb usb4: Manufacturer: Linux 2.6.18.8-0.3-bigsmp ehci_hcd
usb usb4: SerialNumber: 0000:00:1d.7
NET: Registered protocol family 23
usb usb4: configuration #1 chosen from 1 choice
hub 4-0:1.0: USB hub found

Re: Kernel doesn't recognize complete memory

[Robert Hancock]

Frank Fiene wrote:
> On Samstag, 30. Juni 2007, Robert Hancock wrote:
>> Frank Fiene wrote:
>>> Lenovo Z61p, Intel Core2 Duo T7200
>>>
>>> I have 4GB RAM installed and BIOS recognize 4GB RAM.
>>> Linux kernel (Ubuntu-7.04, 32bit-PAE and 64bit, openSUSE-10.2
>>> 32bit-PAE and 64bit) tells me: only 3GB of RAM are installed.
>>>
>>> Any other user with a 4GB Thinkpad? tytso?
>>>
>>> What can i do? Please help!
>>>
>>> Regards
>>> Frank
>> Please post your bootup dmesg output. If your chipset doesn't support
>> memory remapping above 4GB or the BIOS doesn't enable it, you won't
>> be able to use all 4GB of memory.
> 
> Here is me dmesg output, fist 400 lines.

BIOS-provided physical RAM map:
  BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
  BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
  BIOS-e820: 00000000000dc000 - 0000000000100000 (reserved)
  BIOS-e820: 0000000000100000 - 00000000bfed0000 (usable)
  BIOS-e820: 00000000bfed0000 - 00000000bfedf000 (ACPI data)
  BIOS-e820: 00000000bfedf000 - 00000000bff00000 (ACPI NVS)
  BIOS-e820: 00000000bff00000 - 00000000c0000000 (reserved)
  BIOS-e820: 00000000f0000000 - 00000000f4000000 (reserved)
  BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
  BIOS-e820: 00000000fed00000 - 00000000fed00400 (reserved)
  BIOS-e820: 00000000fed14000 - 00000000fed1a000 (reserved)
  BIOS-e820: 00000000fed1c000 - 00000000fed90000 (reserved)
  BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
  BIOS-e820: 00000000ff800000 - 0000000100000000 (reserved)

Yes, that's the problem. Your BIOS/chipset only provides about 3070MB of 
usable RAM to the OS. Unless there is a memory remap option in the BIOS 
that you can enable, there's not much you can do about it.

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/

Re: Kernel doesn't recognize complete memory

[Matthew Garrett]

The 945 chipset used in the Z61 can only address 4GB of physical address 
space and your BIOS is using some of this for PCI and other bits of 
hardware. That only leaves 3GB for RAM. I believe that this restriction 
is mentioned on the IBM website somewhere.

-- 
Matthew Garrett | mjg59@srcf.ucam.org