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Old 12-14-05, 01:43 PM   #1
neversleep
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Default X/X.org lockups on 3 headed 6600GT 128Mb PCI Express

After adding a secondary 6600GT and 3rd display, my X session will lock; becoming unusable. Usually after just minutes; even sitting idle at the desktop. My dmesg/syslog begins filling with “NVRM: Xid:” driver errors. My hardware mouse still partially works/moves around. Screen updates are minutes apart, if at all. Even just opening or resizing a window is often enough to trigger these X lockups. All unnecessary on-board devices are disabled; including FDC, IDE1&2, SATA2, and Firewire. On rare occasion it has been stable for 30 minutes, max. It will crash with and without OpenGL apps running; although glxgears will cause an instant lock of X, but the gears still turn sporadically.

My config:
AMD Athlon64 X2 Dual Core 3800+
2x XFX GeForce 6600GT 128MB PCIExpress (Dual DVI) - Tried with without bridge.
x.org (version 6.8.2; Debian-testing) using 3 separate X screens/displays (no twinview/xinerama)
ABIT AN8 SLI Motherboard (nForce 4) latest BIOS v19 2005/11/23 – Tried in both NORMAL and SLI modes.
2G RAM
nVidia GeFroce Driver set 8174 (ia32)
Kernel (Debian stock) 2.6.14-2-k7-smp (also tried 2.6.15rc5 from kernel.org)
nvnet/nForce driver version: 0310 (forcedeth disabled)

I have also applied the following patches to 8174:
1423627 – Power management (ACPI S3 & APM)
1430812 – Debian version check errors
1427453 – Kernel 2.6.15rc5 vm_insert_page() support.

Since patching I haven't seen “Disabling IRQ#66” messages, and “irq 66: nobody cared”, unless I attempt using the new 2.6.15rc5 kernel; I was previously plagued by these.

I have attempted the following kernel options individually, yielding no improvements or even worse effects: noapic; pci=noacpi; pci=biosirq; mem=nopentium. I have even tried setting NvAGP=0 since this is PCIEx.

I have attached my nvidia-bug-report files, generated via an SSH console.

I could care less about SLI support; I just need 3 working screens/displays. I was previously very stable with a 2 headed, single GeForce 6600 PCI Express card; using driver 7676.

How can I get this configuration stable with 3 separate screens/displays, and using a secondary PCI Express GeForce card? It's now day 3 of troubleshooting this; and I'm completely out of ideas.

Thanks in advance, any help is greatly appreciated.
-Ron
Attached Files
File Type: zip nvidia-bug-report_X-Lockups-SMP-nvagp0.log.zip (22.8 KB, 119 views)
File Type: zip nvidia-bug-report_X-Lockups-SMP.log.zip (22.5 KB, 120 views)
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Old 12-14-05, 02:04 PM   #2
neversleep
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Default Re: X/X.org lockups on 3 headed 6600GT 128Mb PCI Express

One item I forgot to mention. Running a NON-SMP kernel (2.6.14-2-k7-Debian stock). Seems to be stable; although I've only tested this for a 4 hour stretch.
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Old 12-14-05, 02:14 PM   #3
netllama
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Default Re: X/X.org lockups on 3 headed 6600GT 128Mb PCI Express

I have a few questions:
0) If you don't have the assorted VMWare kernel modules loaded, does this still lockup?
1) Which BIOS version are you using?
2) If you run X with just the 2nd card, is the system stable?

Thanks,
Lonni
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Old 12-14-05, 04:48 PM   #4
Stephen Webb
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Default Re: X/X.org lockups on 3 headed 6600GT 128Mb PCI Express

Ron,

Your situation sounds so familiar to me - very similar setup (P4D instead of Athlon), and very similar problems (though I only get lockups with openGL, I think)

For now I'm stuck in non-smp mode, or with just 2 heads. Please let me know if you end up figuring this one out -- I'll post any updates too.

-Steve
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Old 12-14-05, 05:52 PM   #5
neversleep
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Default Re: X/X.org lockups on 3 headed 6600GT 128Mb PCI Express

Results & Answers:
0) Vmware - Now Uninstalled; no more kernel modules
1) ABIT AN8-SLI v19 (2005/11/23) - Newest avail (upgraded 3 days ago)
2) Great idea, Yes very stable - To test this I ran with just the secondary/new card (obviously just Dual head now). It was stable in slot 1 (1 1/2 hour session); and slot 2 (1 1/2 hour session). I even played a GL game (eternal lands) while compiling a kernel with -j 2; to test under heavy load. All while listening to streaming audio; and throwing glxgears in a few times. Needless to say the game wasn't smooth.

Once I changed back to dual-card/3 display setup, lockups, and NVRM: Xid: errors reappeared. I have attached a new nvidia-bug-report logs; since vmware was removed; and this exact config was verfied as very stable with just 2 heads, and a single PCIE card (in either PCIE slot). One log with mobo in Normal Mode, and one in SLI mode, for fun.
Attached Files
File Type: zip nvidia-bug-report-X-Lockups-NormalMode.log.zip (22.8 KB, 120 views)
File Type: zip nvidia-bug-report-X-Lockups-SLIMode.log.zip (22.8 KB, 126 views)
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Old 12-15-05, 01:58 PM   #6
neversleep
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Default Re: X/X.org lockups on 3 headed 6600GT 128Mb PCI Express

Any additional suggestions? I'm desperate for a stable SMP computer; I forgot how choppy a single CPU computer performs. Please advise

-Ron
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Old 12-15-05, 02:35 PM   #7
netllama
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Default Re: X/X.org lockups on 3 headed 6600GT 128Mb PCI Express

This is on my list of items to investigate, however I haven't yet had time to do so.

Thanks for your patience,
Lonni
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Old 12-22-05, 04:07 PM   #8
netllama
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Default Re: X/X.org lockups on 3 headed 6600GT 128Mb PCI Express

Ron,
I've spent some time today trying to reproduce this problem, but could not. Unfortunately, I don't have an Abit A8N motherboard, however I had an Asus A8N. This leads me to suspect that the problem you're hitting may be a BIOS/kernel problem.

Since there doesn't appear to be a newer BIOS available for your motherboard, the only other things that I can suggest right now, is to try a kernel.org 2.6.14.4 kernel and/or the newly released 1.0-8178 driver.

Thanks,
Lonni
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Old 01-03-06, 01:37 PM   #9
neversleep
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Exclamation Re: X/X.org lockups on 3 headed 6600GT 128Mb PCI Express

*****************
**** SOLUTION ****
*****************

use kernel option : pci=conf1

Example grub entry:
title Debian GNU/Linux, kernel 2.6.15-k7-smp
root (hd0,0)
kernel /boot/vmlinuz-2.6.15-k7-smp root=/dev/sda1 ro pci=conf1
savedefault
boot

I have run for 20 hours solid, and NO lockups; remove that parameter, reboot, and I lockup quickly within X/X.org.

This option forces PCI configuraiton methodology 1. The default method for recent 2.6 kernels is to use "MMCONFIG". I have tried the new kernel released last night (2.6.15); it has 2 MMCONFIG fixes in the changelog, but this did not solve the lockups. pci=conf1 is even needed on this new kernel; 2.6.15.

My guess on this one is either a bug in the kernel MMCONFIG for PCIE setup, this may be a working method on 64-bit kernels, as MMCONFIG was developed on/for 64-bit kernels. Or possibly a buggy BIOS.

Post "me-toos" if this fixes your lockups on Dual-CPU + Dual-PCIE nVidia cards!

Review of my platform / config:
AMD Athlon64 X2 Dual Core 3800+
2x XFX GeForce 6600GT 128MB PCIExpress (Dual DVI)
X.org (version 6.8.2; Debian-testing); 3 separate X screens/displays (no twinview/xinerama)
ABIT AN8 SLI Motherboard (nForce 4) latest BIOS v19 2005/11/23
2G RAM
nVidia GeFroce Driver set 8178 (ia32)
Kernel 2.6.14-2-k7-smp & 2.6.15-k7-smp ; compiled for 32bit / i386 arch
nvnet/nForce driver version: 0310 (forcedeth disabled)

Regards,
-Ron Allred
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Old 01-03-06, 01:40 PM   #10
netllama
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Default Re: X/X.org lockups on 3 headed 6600GT 128Mb PCI Express

Ron,
Glad to hear that you found a solution for this problem.

-Lonni
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Old 01-14-06, 01:58 AM   #11
alkaloid
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Default Re: X/X.org lockups on 3 headed 6600GT 128Mb PCI Express

Quote:
Originally Posted by neversleep

use kernel option : pci=conf1

...snip...

Post "me-toos" if this fixes your lockups on Dual-CPU + Dual-PCIE nVidia cards!
Me Too!

I was having very bad lockup issues on my P4 (with HT) on an SMP kernel. Disabling SMP seemed to work (things that didn't work: acpi=ht; acpi=off apm=off; noapic; all of the above in various combinations)

System:
Pentium 4 3.4Ghz with HT
GeForce 6800GT 128MB 16x PCIExpress (Dual DVI)
GeForce FX 5500 PCI (Dual VGA)
X.org 6.8.2 (SuSE package 6.8.2-30)
4 separate X screens/displays with Xinerama
nVidia GeForce Driver version 8178 for ia32
Kernel 2.6.11.4-21.10-smp
SuSE 9.3 with KDE 3.5 from SuSE

I put all kernel command line settings back to default and added "pci=conf1"

No immediate lockups with "pci=conf1". With default settings lockups are triggered reliably within seconds to minutes of login.

Regards,
Alkaloid
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Old 03-20-06, 06:22 PM   #12
Stephen Webb
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Default Re: X/X.org lockups on 3 headed 6600GT 128Mb PCI Express

Fixed it for me too.

Thanks much -- I'd buy you a beer (or a whole keg) if you were close.

Thanks again

-Steve
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