* VIA Northbridge Workaround in 2.4.18 Causing Video Problems
@ 2002-02-26 19:57 Tom Eastep
2002-02-26 20:42 ` Vincent Bernat
` (2 more replies)
0 siblings, 3 replies; 10+ messages in thread
From: Tom Eastep @ 2002-02-26 19:57 UTC (permalink / raw)
To: linux-kernel
[1.] One line summary of the problem:
The VIA Northbridge workaround in 2.4.18 (arch/i386/kernel/pci-pc.c:pci_fixup_via_northbridge_bug)
is causing Video Problems on one of my systems.
[2.] Full description of the problem/report:
System is an Athlon 1.2GZ with VIA KT133 Northbridge and VT82C686 Southbridge. This is a
Compaq Presario with onboard S3 Savage Video that uses 8 or 16mb of system RAM as Video
RAM. Prior to my installing 2.4.18, I have experienced none of the Athlon/VIA problems
that have plagued other users (including the one addressed by the workaround).
With 2.4.18:
a) VGA console goes berserk during boot (random fixed pattern appears and console is unusable).
b) Vesafb console and X (XF86_FBDEV) -- Heavy memory access (either from CPU or disk activity)
produces flicker and horizontal white "noise" on the Display. The amount of flicker and
noise is proportional to memory activity.
I have definitely determined that the problem is with the VIA Workaround as
the symptoms are eliminated when I disable the workaround (see hack below).
[3.] Keywords (i.e., modules, networking, kernel):
Video VIA Workaround
[4.] Kernel version (from /proc/version):
Linux version 2.4.18 (teastep@ursa.shorewall.net) (gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-98)) #2 Tue Feb 26 07:24:29 PST 2002
[5.] Output of Oops.. message (if applicable) with symbolic information
resolved (see Documentation/oops-tracing.txt)
N/A
[6.] A small shell script or example program which triggers the
problem (if possible)
N/A
[7.] Environment
[7.1.] Software (add the output of the ver_linux script here)
Linux ursa.shorewall.net 2.4.18 #2 Tue Feb 26 07:24:29 PST 2002 i686 unknown
Gnu C 2.96
Gnu make 3.79.1
util-linux 2.11f
mount 2.11g
modutils 2.4.13
e2fsprogs 1.23
PPP 2.4.1
isdn4k-utils 3.1pre1
Linux C Library 2.2.4
Dynamic linker (ldd) 2.2.4
Procps 2.0.7
Net-tools 1.60
Console-tools 0.3.3
Sh-utils 2.0.11
Modules Loaded via82cxxx_audio ac97_codec uart401 sound parport_pc lp parport tulip usb-storage nls_iso8859-1 nls_cp437 vfat fat mousedev keybdev hid input usb-uhci usbcore
[7.2.] Processor information (from /proc/cpuinfo):
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 4
model name : AMD Athlon(tm) Processor
stepping : 2
cpu MHz : 1202.134
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov
pat pse36 mmx fxsr syscall mmxext 3dnowext 3dnow
bogomips : 2398.61
[7.3.] Module information (from /proc/modules):
via82cxxx_audio 18048 8 (autoclean)
ac97_codec 9440 0 (autoclean) [via82cxxx_audio]
uart401 6368 0 (autoclean) [via82cxxx_audio]
sound 55884 0 (autoclean) [via82cxxx_audio uart401]
parport_pc 25896 1 (autoclean)
lp 6240 0 (autoclean)
parport 24576 1 (autoclean) [parport_pc lp]
tulip 39680 1
usb-storage 22140 0
nls_iso8859-1 2816 1 (autoclean)
nls_cp437 4320 1 (autoclean)
vfat 9852 1 (autoclean)
fat 31096 0 (autoclean) [vfat]
mousedev 4128 1
keybdev 1856 0 (unused)
hid 12992 0 (unused)
input 3264 0 [mousedev keybdev hid]
usb-uhci 21316 0 (unused)
usbcore 49472 1 [usb-storage hid usb-uhci]
[7.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem)
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0070-007f : rtc
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
0376-0376 : ide1
0378-037a : parport0
03c0-03df : vesafb
03f6-03f6 : ide0
03f8-03ff : serial(auto)
0cf8-0cff : PCI conf1
1000-10ff : Lite-On Communications Inc LNE100TX
1000-10ff : tulip
1400-14ff : VIA Technologies, Inc. AC97 Audio Controller
1400-14ff : via82cxxx_audio
1800-183f : PCTel Inc HSP MicroModem 56
1840-185f : VIA Technologies, Inc. UHCI USB
1840-185f : usb-uhci
1860-187f : VIA Technologies, Inc. UHCI USB (#2)
1860-187f : usb-uhci
1880-188f : VIA Technologies, Inc. Bus Master IDE
1880-1887 : ide0
1888-188f : ide1
1890-1893 : VIA Technologies, Inc. AC97 Audio Controller
1890-1893 : via82cxxx_audio
1894-1897 : VIA Technologies, Inc. AC97 Audio Controller
1894-1897 : via82cxxx_audio
ec00-ec0f : VIA Technologies, Inc. VT82C686 [Apollo Super ACPI]
ee00-eeff : VIA Technologies, Inc. VT82C686 [Apollo Super ACPI]
CPU0
0: 120510 XT-PIC timer
1: 6 XT-PIC keyboard
2: 0 XT-PIC cascade
5: 4826 XT-PIC eth0
8: 1 XT-PIC rtc
9: 2 XT-PIC acpi
10: 8473 XT-PIC via82cxxx
11: 10879 XT-PIC usb-uhci, usb-uhci
14: 12635 XT-PIC ide0
15: 10 XT-PIC ide1
NMI: 0
ERR:
[7.5.] PCI information ('lspci -vvv' as root)
00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 81)
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
Latency: 0
Region 0: Memory at 90000000 (32-bit, prefetchable) [size=64M]
Capabilities: [a0] AGP version 2.0
Status: RQ=31 SBA+ 64bit- FW- Rate=x1,x2
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>
Capabilities: [c0] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:01.0 PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP] (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR+
Latency: 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Memory behind bridge: 80000000-800fffff
Prefetchable memory behind bridge: 88000000-8fffffff
BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B-
Capabilities: [80] Power Management version 2
Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:04.0 Modem: PCTel Inc HSP MicroModem 56 (rev 02) (prog-if 01 [Hayes/16450])
Subsystem: PCTel Inc: Unknown device 0001
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at 1800 [size=64]
Capabilities: [40] Power Management version 2
Flags: PMEClk- DSI+ D1- D2+ AuxCurrent=55mA PME(D0+,D1-,D2+,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:05.0 Ethernet controller: Lite-On Communications Inc LNE100TX (rev 20)
Subsystem: Netgear FA310TX
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 66
Interrupt: pin A routed to IRQ 5
Region 0: I/O ports at 1000 [size=256]
Region 1: Memory at a0000000 (32-bit, non-prefetchable) [size=256]
Expansion ROM at <unassigned> [disabled] [size=256K]
00:14.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 22)
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
Latency: 0
00:14.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 10) (prog-if 8a [Master SecP PriP])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 64
Region 4: I/O ports at 1880 [size=16]
Capabilities: [c0] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:14.2 USB Controller: VIA Technologies, Inc. UHCI USB (rev 10) (prog-if 00 [UHCI])
Subsystem: Unknown device 0925:1234
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 66, cache line size 08
Interrupt: pin D routed to IRQ 11
Region 4: I/O ports at 1840 [size=32]
Capabilities: [80] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:14.3 USB Controller: VIA Technologies, Inc. UHCI USB (rev 10) (prog-if 00 [UHCI])
Subsystem: Unknown device 0925:1234
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 66, cache line size 08
Interrupt: pin D routed to IRQ 11
Region 4: I/O ports at 1860 [size=32]
Capabilities: [80] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:14.4 Bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 30)
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Capabilities: [68] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:14.5 Multimedia audio controller: VIA Technologies, Inc. AC97 Audio Controller (rev 20)
Subsystem: Compaq Computer Corporation: Unknown device 003d
Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin C routed to IRQ 10
Region 0: I/O ports at 1400 [size=256]
Region 1: I/O ports at 1890 [size=4]
Region 2: I/O ports at 1894 [size=4]
Capabilities: [c0] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
01:00.0 VGA compatible controller: S3 Inc.: Unknown device 8a26 (prog-if 00 [VGA])
Subsystem: Compaq Computer Corporation: Unknown device 005b
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 64 (1000ns min, 63750ns max), cache line size 08
Interrupt: pin A routed to IRQ 3
Region 0: Memory at 80000000 (32-bit, non-prefetchable) [size=512K]
Region 1: Memory at 88000000 (32-bit, prefetchable) [size=128M]
Expansion ROM at <unassigned> [disabled] [size=64K]
Capabilities: [dc] Power Management version 2
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [80] AGP version 2.0
Status: RQ=31 SBA- 64bit- FW- Rate=x1,x2
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>
[7.6.] SCSI information (from /proc/scsi/scsi)
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: COMPAQ Model: DVD-ROM DRD8120B Rev: 1.10
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 01 Lun: 00
Vendor: LG Model: CD-RW CED-8120B Rev: 1.09
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 00 Lun: 00
Vendor: Photo Po Model: rt 7700# Rev:
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 00 Lun: 01
Vendor: Photo Po Model: rt 7700# Rev:
Type: Direct-Access ANSI SCSI revision: 02
[7.7.] Other information that might be relevant to the problem
(please look in /proc and include all information that you
think to be relevant):
[X.] Other notes, patches, fixes, workarounds:
I'm currently getting around the problem with the following hack:
diff -u arch/i386/kernel/pci-pc.orig arch/i386/kernel/pci-pc.c
--- arch/i386/kernel/pci-pc.orig Tue Feb 26 07:12:50 2002
+++ arch/i386/kernel/pci-pc.c Tue Feb 26 07:24:23 2002
@@ -1144,7 +1144,7 @@
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, pci_fixup_latency },
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5598, pci_fixup_latency },
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, pci_fixup_piix4_acpi },
- { PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, pci_fixup_via_northbridge_bug },
+/* { PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, pci_fixup_via_northbridge_bug }, */
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8622, pci_fixup_via_northbridge_bug },
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, pci_fixup_via_northbridge_bug },
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8367_0, pci_fixup_via_northbridge_bug },
-Tom
--
Tom Eastep \ Shorewall - iptables made easy
AIM: tmeastep \ http://www.shorewall.net
ICQ: #60745924 \ teastep@shorewall.net
^ permalink raw reply [flat|nested] 10+ messages in thread* Re: VIA Northbridge Workaround in 2.4.18 Causing Video Problems
2002-02-26 19:57 VIA Northbridge Workaround in 2.4.18 Causing Video Problems Tom Eastep
@ 2002-02-26 20:42 ` Vincent Bernat
2002-02-26 21:19 ` Mark Cooke
2002-02-27 15:12 ` Tom Eastep
2002-02-27 2:27 ` Steven Walter
2002-02-27 22:33 ` James Cassidy
2 siblings, 2 replies; 10+ messages in thread
From: Vincent Bernat @ 2002-02-26 20:42 UTC (permalink / raw)
To: Tom Eastep; +Cc: linux-kernel
OoO Pendant le journal télévisé du mardi 26 février 2002, vers 20:57,
Tom Eastep <teastep@shorewall.net> disait:
> I'm currently getting around the problem with the following hack:
You may use the "setpci" command instead to fix this in "userland".
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: VIA Northbridge Workaround in 2.4.18 Causing Video Problems
2002-02-26 20:42 ` Vincent Bernat
@ 2002-02-26 21:19 ` Mark Cooke
2002-02-27 15:12 ` Tom Eastep
1 sibling, 0 replies; 10+ messages in thread
From: Mark Cooke @ 2002-02-26 21:19 UTC (permalink / raw)
To: Vincent Bernat; +Cc: Tom Eastep, linux-kernel
On Tue, 26 Feb 2002, Vincent Bernat wrote:
> OoO Pendant le journal télévisé du mardi 26 février 2002, vers 20:57,
> Tom Eastep <teastep@shorewall.net> disait:
>
> > I'm currently getting around the problem with the following hack:
>
> You may use the "setpci" command instead to fix this in "userland".
Talking about fixups, did anyone examine the very recent pci bandwidth
patch from VIA and try using setpic for a fixup? I emailed VIA
asking for details of the fixup and haven't heard back yet.
(I haven't got windows installed to do a before and after comparison
of the chipset registers to try the fixup here.)
tecchannel.de references:
PCI Bandwidth: http://www.tecchannel.de/hardware/817/
VIA Patch Results: http://www.tecchannel.de/hardware/817/11.html
Peak transfer rates increased from 10-40%
Cheers,
Mark
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
--
+-------------------------------------------------------------------------+
Mark Cooke The views expressed above are mine and are not
Systems Programmer necessarily representative of university policy
University Of Birmingham URL: http://www.sr.bham.ac.uk/~mpc/
+-------------------------------------------------------------------------+
^ permalink raw reply [flat|nested] 10+ messages in thread
* RE: VIA Northbridge Workaround in 2.4.18 Causing Video Problems
2002-02-26 20:42 ` Vincent Bernat
2002-02-26 21:19 ` Mark Cooke
@ 2002-02-27 15:12 ` Tom Eastep
2002-02-27 16:29 ` Vincent Bernat
1 sibling, 1 reply; 10+ messages in thread
From: Tom Eastep @ 2002-02-27 15:12 UTC (permalink / raw)
To: bernat; +Cc: linux-kernel
Vincent,
> -----Original Message-----
> From: bernat@free.fr [mailto:bernat@free.fr]
> Sent: Tuesday, February 26, 2002 12:42 PM
> To: Tom Eastep
> Cc: linux-kernel@vger.kernel.org
> Subject: Re: VIA Northbridge Workaround in 2.4.18 Causing
> Video Problems
>
> Tom Eastep <teastep@shorewall.net> disait:
>
>
> > I'm currently getting around the problem with the following hack:
>
> You may use the "setpci" command instead to fix this in "userland".
>
Thanks for the suggestion -- unfortunately, it is only a partial
solution.
During boot with an 80x25 VGA console, the console video is getting
trashed even before the first init script runs. In that case, correcting
the root cause (setting bit 5 in byte 0x55 of the Northbridge config)
does nothing to restore console video (although it does allow X to run
properly).
So long as I am running a kernel that includes my hack, there's no
problem. My main concern is that the next time that people with a system
like mine want to upgrade their distribution, the distribution's kernel
will include this workaround; those people (myself included) will then
have a miserable time doing the upgrade.
-Tom
--
Tom Eastep \ Shorewall -- iptables made easy
AIM: tmeastep \ http://www.shorewall.net
ICQ: #60745924 \ teastep@shorewall.net
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: VIA Northbridge Workaround in 2.4.18 Causing Video Problems
2002-02-27 15:12 ` Tom Eastep
@ 2002-02-27 16:29 ` Vincent Bernat
0 siblings, 0 replies; 10+ messages in thread
From: Vincent Bernat @ 2002-02-27 16:29 UTC (permalink / raw)
To: Tom Eastep; +Cc: linux-kernel
OoO Vers la fin de l'après-midi du mercredi 27 février 2002, vers
16:12, "Tom Eastep" <teastep@shorewall.net> disait:
> So long as I am running a kernel that includes my hack, there's no
> problem. My main concern is that the next time that people with a system
> like mine want to upgrade their distribution, the distribution's kernel
> will include this workaround; those people (myself included) will then
> have a miserable time doing the upgrade.
Yes, this problem is curious since it seems to work for some/most
people and, as Alan pointed, not for some others...
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: VIA Northbridge Workaround in 2.4.18 Causing Video Problems
2002-02-26 19:57 VIA Northbridge Workaround in 2.4.18 Causing Video Problems Tom Eastep
2002-02-26 20:42 ` Vincent Bernat
@ 2002-02-27 2:27 ` Steven Walter
2002-02-27 22:33 ` James Cassidy
2 siblings, 0 replies; 10+ messages in thread
From: Steven Walter @ 2002-02-27 2:27 UTC (permalink / raw)
To: Tom Eastep; +Cc: linux-kernel
I second this. Experienced almost exactly the same thing with a
2.4.18-pre2 kernel. Removing my board from the
arch/i386/kernel/pci-pc.c file (I believe) fixed the problem.
On Tue, Feb 26, 2002 at 11:57:30AM -0800, Tom Eastep wrote:
>
>
> [1.] One line summary of the problem:
>
> The VIA Northbridge workaround in 2.4.18 (arch/i386/kernel/pci-pc.c:pci_fixup_via_northbridge_bug)
> is causing Video Problems on one of my systems.
>
> [2.] Full description of the problem/report:
>
> System is an Athlon 1.2GZ with VIA KT133 Northbridge and VT82C686 Southbridge. This is a
> Compaq Presario with onboard S3 Savage Video that uses 8 or 16mb of system RAM as Video
> RAM. Prior to my installing 2.4.18, I have experienced none of the Athlon/VIA problems
> that have plagued other users (including the one addressed by the workaround).
>
> With 2.4.18:
>
> a) VGA console goes berserk during boot (random fixed pattern appears and console is unusable).
> b) Vesafb console and X (XF86_FBDEV) -- Heavy memory access (either from CPU or disk activity)
> produces flicker and horizontal white "noise" on the Display. The amount of flicker and
> noise is proportional to memory activity.
>
> I have definitely determined that the problem is with the VIA Workaround as
> the symptoms are eliminated when I disable the workaround (see hack below).
>
> [3.] Keywords (i.e., modules, networking, kernel):
> Video VIA Workaround
> [4.] Kernel version (from /proc/version):
> Linux version 2.4.18 (teastep@ursa.shorewall.net) (gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-98)) #2 Tue Feb 26 07:24:29 PST 2002
>
> [5.] Output of Oops.. message (if applicable) with symbolic information
> resolved (see Documentation/oops-tracing.txt)
> N/A
> [6.] A small shell script or example program which triggers the
> problem (if possible)
> N/A
> [7.] Environment
> [7.1.] Software (add the output of the ver_linux script here)
>
> Linux ursa.shorewall.net 2.4.18 #2 Tue Feb 26 07:24:29 PST 2002 i686 unknown
>
> Gnu C 2.96
> Gnu make 3.79.1
> util-linux 2.11f
> mount 2.11g
> modutils 2.4.13
> e2fsprogs 1.23
> PPP 2.4.1
> isdn4k-utils 3.1pre1
> Linux C Library 2.2.4
> Dynamic linker (ldd) 2.2.4
> Procps 2.0.7
> Net-tools 1.60
> Console-tools 0.3.3
> Sh-utils 2.0.11
> Modules Loaded via82cxxx_audio ac97_codec uart401 sound parport_pc lp parport tulip usb-storage nls_iso8859-1 nls_cp437 vfat fat mousedev keybdev hid input usb-uhci usbcore
>
> [7.2.] Processor information (from /proc/cpuinfo):
> processor : 0
> vendor_id : AuthenticAMD
> cpu family : 6
> model : 4
> model name : AMD Athlon(tm) Processor
> stepping : 2
> cpu MHz : 1202.134
> cache size : 256 KB
> fdiv_bug : no
> hlt_bug : no
> f00f_bug : no
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov
> pat pse36 mmx fxsr syscall mmxext 3dnowext 3dnow
> bogomips : 2398.61
> [7.3.] Module information (from /proc/modules):
> via82cxxx_audio 18048 8 (autoclean)
> ac97_codec 9440 0 (autoclean) [via82cxxx_audio]
> uart401 6368 0 (autoclean) [via82cxxx_audio]
> sound 55884 0 (autoclean) [via82cxxx_audio uart401]
> parport_pc 25896 1 (autoclean)
> lp 6240 0 (autoclean)
> parport 24576 1 (autoclean) [parport_pc lp]
> tulip 39680 1
> usb-storage 22140 0
> nls_iso8859-1 2816 1 (autoclean)
> nls_cp437 4320 1 (autoclean)
> vfat 9852 1 (autoclean)
> fat 31096 0 (autoclean) [vfat]
> mousedev 4128 1
> keybdev 1856 0 (unused)
> hid 12992 0 (unused)
> input 3264 0 [mousedev keybdev hid]
> usb-uhci 21316 0 (unused)
> usbcore 49472 1 [usb-storage hid usb-uhci]
> [7.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem)
> 0000-001f : dma1
> 0020-003f : pic1
> 0040-005f : timer
> 0060-006f : keyboard
> 0070-007f : rtc
> 0080-008f : dma page reg
> 00a0-00bf : pic2
> 00c0-00df : dma2
> 00f0-00ff : fpu
> 0170-0177 : ide1
> 01f0-01f7 : ide0
> 0376-0376 : ide1
> 0378-037a : parport0
> 03c0-03df : vesafb
> 03f6-03f6 : ide0
> 03f8-03ff : serial(auto)
> 0cf8-0cff : PCI conf1
> 1000-10ff : Lite-On Communications Inc LNE100TX
> 1000-10ff : tulip
> 1400-14ff : VIA Technologies, Inc. AC97 Audio Controller
> 1400-14ff : via82cxxx_audio
> 1800-183f : PCTel Inc HSP MicroModem 56
> 1840-185f : VIA Technologies, Inc. UHCI USB
> 1840-185f : usb-uhci
> 1860-187f : VIA Technologies, Inc. UHCI USB (#2)
> 1860-187f : usb-uhci
> 1880-188f : VIA Technologies, Inc. Bus Master IDE
> 1880-1887 : ide0
> 1888-188f : ide1
> 1890-1893 : VIA Technologies, Inc. AC97 Audio Controller
> 1890-1893 : via82cxxx_audio
> 1894-1897 : VIA Technologies, Inc. AC97 Audio Controller
> 1894-1897 : via82cxxx_audio
> ec00-ec0f : VIA Technologies, Inc. VT82C686 [Apollo Super ACPI]
> ee00-eeff : VIA Technologies, Inc. VT82C686 [Apollo Super ACPI]
> CPU0
> 0: 120510 XT-PIC timer
> 1: 6 XT-PIC keyboard
> 2: 0 XT-PIC cascade
> 5: 4826 XT-PIC eth0
> 8: 1 XT-PIC rtc
> 9: 2 XT-PIC acpi
> 10: 8473 XT-PIC via82cxxx
> 11: 10879 XT-PIC usb-uhci, usb-uhci
> 14: 12635 XT-PIC ide0
> 15: 10 XT-PIC ide1
> NMI: 0
> ERR:
> [7.5.] PCI information ('lspci -vvv' as root)
> 00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 81)
> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
> Latency: 0
> Region 0: Memory at 90000000 (32-bit, prefetchable) [size=64M]
> Capabilities: [a0] AGP version 2.0
> Status: RQ=31 SBA+ 64bit- FW- Rate=x1,x2
> Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>
> Capabilities: [c0] Power Management version 2
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:01.0 PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP] (prog-if 00 [Normal decode])
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR+
> Latency: 0
> Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
> Memory behind bridge: 80000000-800fffff
> Prefetchable memory behind bridge: 88000000-8fffffff
> BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B-
> Capabilities: [80] Power Management version 2
> Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:04.0 Modem: PCTel Inc HSP MicroModem 56 (rev 02) (prog-if 01 [Hayes/16450])
> Subsystem: PCTel Inc: Unknown device 0001
> Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
> Interrupt: pin A routed to IRQ 10
> Region 0: I/O ports at 1800 [size=64]
> Capabilities: [40] Power Management version 2
> Flags: PMEClk- DSI+ D1- D2+ AuxCurrent=55mA PME(D0+,D1-,D2+,D3hot+,D3cold+)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:05.0 Ethernet controller: Lite-On Communications Inc LNE100TX (rev 20)
> Subsystem: Netgear FA310TX
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
> Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
> Latency: 66
> Interrupt: pin A routed to IRQ 5
> Region 0: I/O ports at 1000 [size=256]
> Region 1: Memory at a0000000 (32-bit, non-prefetchable) [size=256]
> Expansion ROM at <unassigned> [disabled] [size=256K]
>
> 00:14.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 22)
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping+ SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
> Latency: 0
>
> 00:14.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 10) (prog-if 8a [Master SecP PriP])
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
> Latency: 64
> Region 4: I/O ports at 1880 [size=16]
> Capabilities: [c0] Power Management version 2
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:14.2 USB Controller: VIA Technologies, Inc. UHCI USB (rev 10) (prog-if 00 [UHCI])
> Subsystem: Unknown device 0925:1234
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
> Latency: 66, cache line size 08
> Interrupt: pin D routed to IRQ 11
> Region 4: I/O ports at 1840 [size=32]
> Capabilities: [80] Power Management version 2
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:14.3 USB Controller: VIA Technologies, Inc. UHCI USB (rev 10) (prog-if 00 [UHCI])
> Subsystem: Unknown device 0925:1234
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
> Latency: 66, cache line size 08
> Interrupt: pin D routed to IRQ 11
> Region 4: I/O ports at 1860 [size=32]
> Capabilities: [80] Power Management version 2
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:14.4 Bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 30)
> Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
> Capabilities: [68] Power Management version 2
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 00:14.5 Multimedia audio controller: VIA Technologies, Inc. AC97 Audio Controller (rev 20)
> Subsystem: Compaq Computer Corporation: Unknown device 003d
> Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
> Interrupt: pin C routed to IRQ 10
> Region 0: I/O ports at 1400 [size=256]
> Region 1: I/O ports at 1890 [size=4]
> Region 2: I/O ports at 1894 [size=4]
> Capabilities: [c0] Power Management version 2
> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
> 01:00.0 VGA compatible controller: S3 Inc.: Unknown device 8a26 (prog-if 00 [VGA])
> Subsystem: Compaq Computer Corporation: Unknown device 005b
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
> Status: Cap+ 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
> Latency: 64 (1000ns min, 63750ns max), cache line size 08
> Interrupt: pin A routed to IRQ 3
> Region 0: Memory at 80000000 (32-bit, non-prefetchable) [size=512K]
> Region 1: Memory at 88000000 (32-bit, prefetchable) [size=128M]
> Expansion ROM at <unassigned> [disabled] [size=64K]
> Capabilities: [dc] Power Management version 2
> Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
> Capabilities: [80] AGP version 2.0
> Status: RQ=31 SBA- 64bit- FW- Rate=x1,x2
> Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>
>
> [7.6.] SCSI information (from /proc/scsi/scsi)
> Attached devices:
> Host: scsi0 Channel: 00 Id: 00 Lun: 00
> Vendor: COMPAQ Model: DVD-ROM DRD8120B Rev: 1.10
> Type: CD-ROM ANSI SCSI revision: 02
> Host: scsi0 Channel: 00 Id: 01 Lun: 00
> Vendor: LG Model: CD-RW CED-8120B Rev: 1.09
> Type: CD-ROM ANSI SCSI revision: 02
> Host: scsi1 Channel: 00 Id: 00 Lun: 00
> Vendor: Photo Po Model: rt 7700# Rev:
> Type: Direct-Access ANSI SCSI revision: 02
> Host: scsi1 Channel: 00 Id: 00 Lun: 01
> Vendor: Photo Po Model: rt 7700# Rev:
> Type: Direct-Access ANSI SCSI revision: 02
> [7.7.] Other information that might be relevant to the problem
> (please look in /proc and include all information that you
> think to be relevant):
> [X.] Other notes, patches, fixes, workarounds:
> I'm currently getting around the problem with the following hack:
>
> diff -u arch/i386/kernel/pci-pc.orig arch/i386/kernel/pci-pc.c
> --- arch/i386/kernel/pci-pc.orig Tue Feb 26 07:12:50 2002
> +++ arch/i386/kernel/pci-pc.c Tue Feb 26 07:24:23 2002
> @@ -1144,7 +1144,7 @@
> { PCI_FIXUP_HEADER, PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, pci_fixup_latency },
> { PCI_FIXUP_HEADER, PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5598, pci_fixup_latency },
> { PCI_FIXUP_HEADER, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, pci_fixup_piix4_acpi },
> - { PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, pci_fixup_via_northbridge_bug },
> +/* { PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, pci_fixup_via_northbridge_bug }, */
> { PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8622, pci_fixup_via_northbridge_bug },
> { PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, pci_fixup_via_northbridge_bug },
> { PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8367_0, pci_fixup_via_northbridge_bug },
>
> -Tom
> --
> Tom Eastep \ Shorewall - iptables made easy
> AIM: tmeastep \ http://www.shorewall.net
> ICQ: #60745924 \ teastep@shorewall.net
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
--
-Steven
In a time of universal deceit, telling the truth is a revolutionary act.
-- George Orwell
He's alive. He's alive! Oh, that fellow at RadioShack said I was mad!
Well, who's mad now?
-- Montgomery C. Burns
^ permalink raw reply [flat|nested] 10+ messages in thread* Re: VIA Northbridge Workaround in 2.4.18 Causing Video Problems
2002-02-26 19:57 VIA Northbridge Workaround in 2.4.18 Causing Video Problems Tom Eastep
2002-02-26 20:42 ` Vincent Bernat
2002-02-27 2:27 ` Steven Walter
@ 2002-02-27 22:33 ` James Cassidy
2002-02-27 22:45 ` Tom Eastep
2 siblings, 1 reply; 10+ messages in thread
From: James Cassidy @ 2002-02-27 22:33 UTC (permalink / raw)
To: Tom Eastep; +Cc: linux-kernel
[-- Attachment #1: Type: text/plain, Size: 1426 bytes --]
On Tue, Feb 26, 2002 at 11:57:30AM -0800, Tom Eastep wrote:
> [2.] Full description of the problem/report:
>
> System is an Athlon 1.2GZ with VIA KT133 Northbridge and VT82C686 Southbridge. This is a
> Compaq Presario with onboard S3 Savage Video that uses 8 or 16mb of system RAM as Video
> RAM. Prior to my installing 2.4.18, I have experienced none of the Athlon/VIA problems
> that have plagued other users (including the one addressed by the workaround).
>
> With 2.4.18:
Odd, I have had constant problems with crashes when ever I stressed
my memory system with Athlon kernel selected in the kernel config. Same
machine, Compaq Presario 700 series. Usually a kernel compile was enough
to cause an opps on one of these kernels.
When the path in 2.4.18 in pre1 or pre2 don't remember, it fixed the
problem on my Compaq Presario 700. I've been running the 2.4.18 series
since the patch was added and as of today I have not experienced another
opps of this kind with the Athlon option enabled in the kernel.
I'll compile a 2.4.18 kernel without the patch tonight and see if I
can generated the crash again.
I've never seen the VGA console go berserk, and I used it pretty
often.
Although I have seen vesafb generate noise on the console, never looked
into it much, because it usually could easily be cleared. I've never noticed
any flicker in vesafb.
-- James Cassidy (QFire)
[-- Attachment #2: Type: application/pgp-signature, Size: 232 bytes --]
^ permalink raw reply [flat|nested] 10+ messages in thread
* RE: VIA Northbridge Workaround in 2.4.18 Causing Video Problems
2002-02-27 22:33 ` James Cassidy
@ 2002-02-27 22:45 ` Tom Eastep
0 siblings, 0 replies; 10+ messages in thread
From: Tom Eastep @ 2002-02-27 22:45 UTC (permalink / raw)
To: 'James Cassidy'; +Cc: linux-kernel
> -----Original Message-----
> From: James Cassidy [mailto:jcassidy@qfire.net] On Behalf Of
> James Cassidy
> Sent: Wednesday, February 27, 2002 2:33 PM
> To: Tom Eastep
> Cc: linux-kernel@vger.kernel.org
> Subject: Re: VIA Northbridge Workaround in 2.4.18 Causing
> Video Problems
>
>
> Odd, I have had constant problems with crashes when
> ever I stressed
> my memory system with Athlon kernel selected in the kernel
> config. Same
> machine, Compaq Presario 700 series.
Mine is not a 700 -- it is Presario 5108US Desktop.
> Usually a kernel
> compile was enough
> to cause an opps on one of these kernels.
> When the path in 2.4.18 in pre1 or pre2 don't remember,
> it fixed the
> problem on my Compaq Presario 700. I've been running the 2.4.18 series
> since the patch was added and as of today I have not
> experienced another
> opps of this kind with the Athlon option enabled in the kernel.
>
Your system appears to be one of the ones for which the workaround is
effective. Mine on the other hand works fine without the workaround and
has problems when the workaround is activated.
-Tom
--
Tom Eastep \ Shorewall -- iptables made easy
AIM: tmeastep \ http://www.shorewall.net
ICQ: #60745924 \ teastep@shorewall.net
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: VIA Northbridge Workaround in 2.4.18 Causing Video Problems
@ 2002-02-27 18:01 Alex Davis
2002-02-27 21:26 ` Mark Cooke
0 siblings, 1 reply; 10+ messages in thread
From: Alex Davis @ 2002-02-27 18:01 UTC (permalink / raw)
To: linux-kernel
Sounds like a perfect candidate for a kernel config option.
-Alex
>> So long as I am running a kernel that includes my hack, there's no
>> problem. My main concern is that the next time that people with a system
>> like mine want to upgrade their distribution, the distribution's kernel
>> will include this workaround; those people (myself included) will then
>> have a miserable time doing the upgrade.
>Yes, this problem is curious since it seems to work for some/most
>people and, as Alan pointed, not for some others...
__________________________________________________
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: VIA Northbridge Workaround in 2.4.18 Causing Video Problems
2002-02-27 18:01 Alex Davis
@ 2002-02-27 21:26 ` Mark Cooke
0 siblings, 0 replies; 10+ messages in thread
From: Mark Cooke @ 2002-02-27 21:26 UTC (permalink / raw)
To: Alex Davis; +Cc: linux-kernel
On Wed, 27 Feb 2002, Alex Davis wrote:
> Sounds like a perfect candidate for a kernel config option.
Well - maybe a command line override to not make the (official) via
recommended mod. We can always hope that board manufacturers will
(eventually) produce bios revs with fixed parameters too.
Mark
> >> So long as I am running a kernel that includes my hack, there's no
> >> problem. My main concern is that the next time that people with a system
> >> like mine want to upgrade their distribution, the distribution's kernel
> >> will include this workaround; those people (myself included) will then
> >> have a miserable time doing the upgrade.
>
> >Yes, this problem is curious since it seems to work for some/most
> >people and, as Alan pointed, not for some others...
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! Greetings - Send FREE e-cards for every occasion!
> http://greetings.yahoo.com
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
--
+-------------------------------------------------------------------------+
Mark Cooke The views expressed above are mine and are not
Systems Programmer necessarily representative of university policy
University Of Birmingham URL: http://www.sr.bham.ac.uk/~mpc/
+-------------------------------------------------------------------------+
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2002-02-27 22:46 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2002-02-26 19:57 VIA Northbridge Workaround in 2.4.18 Causing Video Problems Tom Eastep
2002-02-26 20:42 ` Vincent Bernat
2002-02-26 21:19 ` Mark Cooke
2002-02-27 15:12 ` Tom Eastep
2002-02-27 16:29 ` Vincent Bernat
2002-02-27 2:27 ` Steven Walter
2002-02-27 22:33 ` James Cassidy
2002-02-27 22:45 ` Tom Eastep
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2002-02-27 18:01 Alex Davis
2002-02-27 21:26 ` Mark Cooke
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