kernel: error: [drm:pid12:i915_hangcheck_hung]

[Erich Dollansky]

Hi,

it seems to me that an old bug is still in a recent 10.3:

http://freebsd.1045724.x6.nabble.com/Intel-i915-GPU-hung-td5948161.html

The situation was that I was watching a video with vlc, downloaded and
making a backup. The machine was very busy but also still very
responsive. After the GPU hung, I did not get any video output and the
keyboard was off. I could power off the machine normally via the power
button.

The hardware is a 2nd generation mobile i7 in an X220.

Erich

The related excerpt from /var/log/message:

Apr  7 06:25:33 X220 kernel: error: [drm:pid1245:gen6_sanitize_pm]
*ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected
1a0d0000, was 1a000000 

Apr  7 06:28:43 X220 kernel: error: [drm:pid1245:gen6_sanitize_pm]
*ERROR* Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected
000d0000, was 1a0d0000 

Apr  7 07:10:16 X220 kernel: error: [drm:pid12:i915_hangcheck_hung]
*ERROR* Hangcheck timer elapsed... GPU hung 

Apr  7 07:10:16 X220 kernel: info: [drm] capturing error event; look
for more information in sysctl hw.dri.0.info.i915_error_state 

Apr  7 07:10:24 X220 devd:
check_clients:  dropping disconnected client 

Apr  7 07:11:09 X220 kernel: pid 29116 (vlc), uid 1001: exited on
signal 11 (core dumped)

Apr  7 07:11:12 X220 kernel: pid 5102 (vlc), uid 1001: exited on signal
11 (core dumped) 

Apr  7 07:13:28 X220 kernel: . 

Apr  7 07:13:30 X220 kernel: acpi_ibm0: detached

uname:

FreeBSD X220.alogt.com 10.3-STABLE FreeBSD 10.3-STABLE #5 r31617