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Subjectdrm: i915 hangcheck/GPU errors
Hi,

My Toshiba Portege (Intel Core i5) hangs every few days.
Sometimes I can see no log messages/reasons for it.
Sometimes there are messages about X receiving potentially
fatal signals.

Today's hang appears to have some useful info (maybe).

Mar 6 09:01:45 dragon kernel: [137308.704424] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Mar 6 09:01:45 dragon kernel: [137308.704552] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
Mar 6 09:01:45 dragon kernel: [137308.718950] [drm:i915_wait_request] *ERROR* i915_wait_request returns -11 (awaiting 16513584 at 16513581, next 16513585)
Mar 6 09:02:13 dragon kernel: [137336.754647] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Mar 6 09:02:13 dragon kernel: [137336.754698] [drm:i915_wait_request] *ERROR* i915_wait_request returns -11 (awaiting 16517081 at 16517078, next 16517082)

...

Mar 6 09:05:44 dragon kernel: [137548.071904] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Mar 6 09:05:44 dragon kernel: [137548.071951] [drm:i915_wait_request] *ERROR* i915_wait_request returns -11 (awaiting 16550939 at 16550936, next 16550940)
Mar 6 09:05:57 dragon kernel: [137560.924459] X/1399: potentially unexpected fatal signal 6.
Mar 6 09:05:57 dragon kernel: [137560.924463]
Mar 6 09:05:57 dragon kernel: [137560.924466] CPU 1
Mar 6 09:05:57 dragon kernel: [137560.924468] Modules linked in: usblp snd_hda_intel snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss ipv6 af_packet acpi_cpufreq mperf lp ppdev parport_pc parport snd_hda_codec_hdmi snd_hda_codec_realtek uvcvideo videobuf2_core videobuf2_vmalloc videobuf2_memops usbhid hid mousedev snd_hda_codec arc4 snd_hwdep iwlwifi toshiba_acpi psmouse snd_pcm snd_timer sparse_keymap ehci_hcd battery serio_raw mac80211 evdev thermal ac xhci_hcd snd_page_alloc wmi power_supply e1000e mei(C) sdhci_pci sdhci mmc_core firmware_class cfg80211 rfkill processor sg rtc_cmos loop unix [last unloaded: snd_hda_intel]
Mar 6 09:05:57 dragon kernel: [137560.924560]
Mar 6 09:05:58 dragon kernel: [137560.924564] Pid: 1399, comm: X Tainted: G C 3.3.0-rc5 #2 TOSHIBA PORTEGE R835/Portable PC
Mar 6 09:05:58 dragon kernel: [137560.924572] RIP: 0033:[<00007f57463c7035>] [<00007f57463c7035>] 0x7f57463c7034
Mar 6 09:05:58 dragon kernel: [137560.924581] RSP: 002b:00007fff0ac33758 EFLAGS: 00003206
Mar 6 09:05:58 dragon kernel: [137560.924585] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffffffffff
Mar 6 09:05:58 dragon kernel: [137560.924589] RDX: 0000000000000006 RSI: 0000000000000577 RDI: 0000000000000577
Mar 6 09:05:58 dragon kernel: [137560.924593] RBP: 00007fff0ac341a0 R08: 00007f57464ee8e0 R09: 0000000000411e40
Mar 6 09:05:59 dragon kernel: [137560.924597] R10: 0000000000000008 R11: 0000000000003206 R12: 0000000000000037
Mar 6 09:06:00 dragon kernel: [137560.924600] R13: 00007fff0ac33a80 R14: 000000000000004f R15: 0000000000000007
Mar 6 09:06:00 dragon kernel: [137560.924604] FS: 00007f57487a18a0(0000) GS:ffff88014a600000(0000) knlGS:0000000000000000
Mar 6 09:06:02 dragon kernel: [137560.924609] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Mar 6 09:06:02 dragon kernel: [137560.924612] CR2: 0000000000418ff0 CR3: 000000013d059000 CR4: 00000000000406e0
Mar 6 09:06:02 dragon kernel: [137560.924616] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Mar 6 09:06:02 dragon kernel: [137560.924620] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Mar 6 09:06:03 dragon kernel: [137560.924624] Process X (pid: 1399, threadinfo ffff88013e9cc000, task ffff880124120000)
Mar 6 09:06:03 dragon kernel: [137560.924627]
Mar 6 09:06:03 dragon kernel: [137560.924630] Call Trace:

</end>


Any ideas/suggestions?



"look for more information in /debug/dri/0/i915_error_state"

Where is that file? in debugfs or somewhere else?

thanks,
--
~Randy


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