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WvR
Tux's lil' helper
Joined: 03 Mar 2011
Posts: 111
Location: Tsuruga, Japan
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 Posted: Fri Feb 01, 2013 12:05 am Post subject: i915: GPU hung, declared wedged.... tips? |
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I use a Lenovo ThinkPad X201i with gentoo with full satisfaction. However, recently I am experiencing some issues:
Problem: when working with Gnome (v3.6.x), at some point the interface freezes. I can move the mouse, and the cursor will move over the screen, but for instance the clock is frozen. After several seconds, the active window is blacked out. Then, I get the black screen that says "Sorry, something has gone wrong and the system cannot recover. Call a system administrator".
The keyboard is responsive. I use CTRL-ALT-F1 to get to a tty, log in as root, and restart XDM. Then, X will restart, but before the GDM login screen appears, I get the same error message: "Sorry, something has gone wrong and the system cannot recover. Call a system administrator"
After trying several things, I have a feeling that it is an issue with the Intel i915 driver. A snippet from /var/log/messages
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Jan 31 16:04:17 rine50 kernel: [ 5887.075138] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
Jan 31 16:04:17 rine50 kernel: [ 5887.075145] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
Jan 31 16:04:19 rine50 kernel: [ 5888.691015] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
Jan 31 16:04:19 rine50 kernel: [ 5888.691326] [drm:i915_reset] *ERROR* GPU hanging too fast, declaring wedged!
Jan 31 16:04:19 rine50 kernel: [ 5888.691334] [drm:i915_reset] *ERROR* Failed to reset chip.
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Browsing in Google, I discovered this error, but in all cases with linux kernel 2.6.3x. I use 3.7.4. A more recent message pointed to a buggy combination of BIOS and hardware on a particular type of Intel motherboard. But in my case, the laptop was fine until now. Am I looking at broken hardware? If so, how to find out? Or can I somehow switch off the DRM and use the "old-style" Gnome instead of the "new-style" Gnome. I have used my laptop also with Xsession (twm) - in this case the error does not occur but I have not used the system long enough with twm to make a definitive conclusion.
Any tips are welcome. Is there a way to "stress test" the GPU? |
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BillWho
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Joined: 03 Mar 2012
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Location: US
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| Posted: Fri Feb 01, 2013 1:15 am Post subject: |
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WvR,
Did you check /sys/kernel/debug/dri/0/i915_error_state  Maybe some better clues there.
_________________
Good luck 
Since installing gentoo, my life has become one long emerge  |
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WvR
Tux's lil' helper
Joined: 03 Mar 2011
Posts: 111
Location: Tsuruga, Japan
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| Posted: Fri Feb 01, 2013 6:41 am Post subject: |
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It happened again.... This time I copied the i915_error_state. It does not give much help. It is a very long list of register contents in hexadecimal form.
Just today the intel driver (xf86_video_intel) was updated but apparently that does not help..... |
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WvR
Tux's lil' helper
Joined: 03 Mar 2011
Posts: 111
Location: Tsuruga, Japan
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WvR
Tux's lil' helper
Joined: 03 Mar 2011
Posts: 111
Location: Tsuruga, Japan
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| Posted: Sat Feb 02, 2013 11:24 pm Post subject: |
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| Downgrading the kernel to 3.6.11 did not help. Yesterday evening two "crashes" in 10 minutes. The most irritating feature is that you have to restart the computer to solve it. Simply restarting X does not help because somehow the GPU cannot be "reset. Next try: downgrade the intel driver from 2.20.19-r1 to 2.20.13. Wish me luck... |
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BillWho
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Joined: 03 Mar 2012
Posts: 1576
Location: US
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| Posted: Sun Feb 03, 2013 12:59 am Post subject: |
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WvR,
Did you add or change any settings in /etc/X11/xorg.conf.d/20-intel.conf
Is DRM_I915 built-in or a module
Have a look at x11-apps/intel-gpu-tools. Maybe some tests can provide a clue.
_________________
Good luck
Since installing gentoo, my life has become one long emerge |
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WvR
Tux's lil' helper
Joined: 03 Mar 2011
Posts: 111
Location: Tsuruga, Japan
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| Posted: Mon Feb 04, 2013 9:28 am Post subject: |
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No changes to anything. These problems seem to have started without a clearly identifiable cause. That is one of the reasons why I suspect hardware problems.
I downgraded xf86-video-intel to the stable version. Let's see if this brings any improvement. |
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toralf
Advocate
Joined: 01 Feb 2004
Posts: 2411
Location: Hamburg/Germany
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| Posted: Mon Feb 04, 2013 10:56 am Post subject: |
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| WvR wrote: | | It happened again.... This time I copied the i915_error_state. It does not give much help. |
Well, that content is not intended to be readable by a common user. Just file a bug here https://bugzilla.kernel.org and attach the content of that file. |
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WvR
Tux's lil' helper
Joined: 03 Mar 2011
Posts: 111
Location: Tsuruga, Japan
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| Posted: Thu Feb 07, 2013 5:40 am Post subject: [solved] i915: GPU hung, declared wedged.... tips? |
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| Since I downgraded to x11-drivers/xf86-video-intel v2.20.13 the problem has not returned, so I am declaring it "solved" for the time being. |
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