Probable PCIE prob

Probable PCIE prob

[Syren Baran]

Hi,

i got a problem with the combination of an Asrock AM2NF4G-SATA2
mainboard with a Radeon X1900 (chip 1002,724b) graphics
card. /i386/pci/mmconfig.c reports a buggy bios (e0000000 is not
E820-reserved). System crashes only happen when viewing films (neither
xine nor mplayer run with root privileges) and independent of video
drivers (framebuffer, vesa and fglrx). Logs dont show any anomalies
before crashing. Anybody got a clue?

Thanks,
Syren

Re: Probable PCIE prob

[Andi Kleen]

Syren Baran <sbaran@gmx.de> writes:

> i got a problem with the combination of an Asrock AM2NF4G-SATA2
> mainboard with a Radeon X1900 (chip 1002,724b) graphics
> card. /i386/pci/mmconfig.c reports a buggy bios (e0000000 is not
> E820-reserved).

This message is harmless and likely unrelated.

 System crashes only happen when viewing films (neither
> xine nor mplayer run with root privileges) and independent of video
> drivers (framebuffer, vesa and fglrx). Logs dont show any anomalies
> before crashing. Anybody got a clue?

Sounds like some sort of hardware problem. Maybe the power supply
is not up to the task? Or the board could be broken. Also always
worth updating the BIOS.

-Andi

Re: Probable PCIE prob

[Syren Baran]

Am Sonntag, den 29.04.2007, 13:54 +0200 schrieb Andi Kleen:
> Syren Baran <sbaran@gmx.de> writes:
> 
> > i got a problem with the combination of an Asrock AM2NF4G-SATA2
> > mainboard with a Radeon X1900 (chip 1002,724b) graphics
> > card. /i386/pci/mmconfig.c reports a buggy bios (e0000000 is not
> > E820-reserved).
> 
> This message is harmless and likely unrelated.
Maybe, but thats the only clue i can get from the kernel.
> 
>  System crashes only happen when viewing films (neither
> > xine nor mplayer run with root privileges) and independent of video
> > drivers (framebuffer, vesa and fglrx). Logs dont show any anomalies
> > before crashing. Anybody got a clue?
> 
> Sounds like some sort of hardware problem. Maybe the power supply
> is not up to the task?
Definatly not, already replaced that with a 550W power supply.
>  Or the board could be broken.
Most likely not. I recently actually installed Windows XP to check.
Granted, just watching one film may not have been long enough to trigger
this effect (the crashes usually take place after 1/2 an hour, though
times can vary largely).
>  Also always
> worth updating the BIOS.
Did that long before posting. Changing the PCIE frequency in the BIOS
didnt help either.
> 
> -Andi

Syren

Re: Probable PCIE prob

[Alistair John Strachan]

On Saturday 28 April 2007 20:53:37 Syren Baran wrote:
> Hi,
>
> i got a problem with the combination of an Asrock AM2NF4G-SATA2
> mainboard with a Radeon X1900 (chip 1002,724b) graphics
> card. /i386/pci/mmconfig.c reports a buggy bios (e0000000 is not
> E820-reserved). System crashes only happen when viewing films (neither
> xine nor mplayer run with root privileges) and independent of video
> drivers (framebuffer, vesa and fglrx). Logs dont show any anomalies
> before crashing. Anybody got a clue?

This is a pretty bizarre crash. It might be a hardware problem. Try running a 
load intensive task, something that heats your CPU up, for a long period. See 
if it lasts longer than 30 minutes..

Another thing you could try doing was eliminating X completely, by using 
mplayer on a vesafb console..

-- 
Cheers,
Alistair.

Final year Computer Science undergraduate.
1F2 55 South Clerk Street, Edinburgh, UK.

Re: Probable PCIE prob

[Syren Baran]

Am Sonntag, den 29.04.2007, 15:21 +0100 schrieb Alistair John Strachan:
> On Saturday 28 April 2007 20:53:37 Syren Baran wrote:
> > System crashes only happen when viewing films (neither
> > xine nor mplayer run with root privileges) and independent of video
> > drivers (framebuffer, vesa and fglrx). Logs dont show any anomalies
> > before crashing. Anybody got a clue?
> 
> This is a pretty bizarre crash. It might be a hardware problem. Try running a 
> load intensive task, something that heats your CPU up, for a long period. See 
> if it lasts longer than 30 minutes..

Think were getting in the right direction. Running "mencoder -ovc lavc
-oac lavc -of mpeg -o /dev/null somefilm" causes crashes consistantly
after a couple of minutes (using different kernels, some problem on XP).
Exchanging the CPU with an identical chip (Sempron 2800+, family 15,
model 79) caused the same behavior. On the other hand a highly
sophisticated, quick test for several hours (4-12, probably closer to
12) produced this crash:

EFLAGS: 00010093  (2.6.20-1.2944-fc6 #1)
EIP is at dump_trace+0x5c/0x93
eax: 75715ffd ebx: 75715f65 ecx: 0178d206 edx: 01236180
esi: 5f6f626f edi: 75715000 ebp: c06a645e esp: dead4d95
ds: 007b es: 007b ss:0068
Process a.out (pid 3499, ti=dead4000, task=eb64cbb0, task.ti=ea872000)
Stack: c06a645e c06a645e 00000018 00000000 c06a645e c0405001 c06fdc40
c06a645e
dead4f38 c04050b0 c06a645e c06a645e dead4e9d dead4ed5 00000002 00010046
dead4e9d dead4ed5 c0405246 c06a645e 00000010 eb64cd44 00000dab dead4000
Call Trace:
[<c0405001>] show_trace_log_lvl+0x18/0x2c
[<c04050b0>] show_trace_log_lvl+0x9b/0xa3
[<c0405246>] show_registers+018e/0x25d
[<c0621fcf>] notifier_call_chain+0x19/0x29
[<c0405443>] die+0x12e/0x240
[<c0621ee3>] do_page_fault+0x407/0x4da
[<c0621adc>] do_page_fault+0x0/0x4da
[<c0620744>] error_code+0x7c/0x84
BUG: unable to handle kernel paging request at virtual address 75715f65
printing eip:
c0404fb2
*pde=00000000
Recursive die() failure, output suppressed
<O>Kernel panic-not syncing: Fatal exception in interrupt

This is probable due to overheating (didnt have any thermal paste when
swapping the CPU´s). After waking up after 12 hours and noting the error
the CPU was still at 82 degrees celsius.
Unlike the crashes from mencoder, cpu temperatur below 40 degrees.
The only meaningfull error i could get when running mencoder (sometimes
system freezes, sometimes reboots, once got this message+freeze) "double
fault, gdt at c17c8000".


> Another thing you could try doing was eliminating X completely, by using 
> mplayer on a vesafb console..

Did the above tests in runlevel 3, thus eliminating X as a possible
cause. Also removed the gfx card to exclude electromagnetical
interference (onboard nv4 is sufficient).
Doesnt seem like a kernel bug, but (usermode-) mencoder causing a crash
on different kernels and OS´s is wierd.
> 

Syren

PS: the source code for the sophisticated a.out
int main(char *argv[], int argc){
        int i;
        while (1){
                i++;
        }
} 

Resolved (was: Re: Probable PCIE prob)

[Syren Baran]

Am Sonntag, den 29.04.2007, 15:21 +0100 schrieb Alistair John Strachan:

> > i got a problem with the combination of an Asrock AM2NF4G-SATA2
> > mainboard with a Radeon X1900 (chip 1002,724b) graphics
> > card. /i386/pci/mmconfig.c reports a buggy bios (e0000000 is not
> > E820-reserved). System crashes only happen when viewing films (neither
> > xine nor mplayer run with root privileges) and independent of video
> > drivers (framebuffer, vesa and fglrx). Logs dont show any anomalies
> > before crashing. Anybody got a clue?
> 
> This is a pretty bizarre crash. It might be a hardware problem. Try running a 
> load intensive task, something that heats your CPU up, for a long period. See 
> if it lasts longer than 30 minutes..

It turned out this problem only occors when the DDR2 modules (of the
mainboard) run in dual channel mode (two different modules, identical
specs). Weird and annoying, but no softwareproblem.

Syren