[Expired for xserver-xorg-video-intel (Ubuntu) because there has been no
activity for 60 days.]
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Incomplete = Expired
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Had a non-fatal GPU hang (possibly a different issue), but when I tried
to cat the file I got:
cat: /sys/kernel/debug/dri/0/i915_error_state: Cannot allocate memory
The kernel also syslogged detailed information about this. Presumably
it's kernel memory that can't be allocated, since the system
That's not actually the relevant error-state, but an earlier non-fatal
one. If you look in dmesg you can see when that first error-state is
generated prior to the hang and clear it with echo
/sys/kernel/debug/dri/0/i915_error_state and then attach the error for
the fatal hang.
** Changed in:
You're right, an error occurred the previous night, when the computer
was unattended, and I didn't notice (dmesg output below). I rebooted
anyway so the error state is now lost.
Are you suggesting that I could have reset the i915_error_state and
catting it would then have printed the subsequent
The error state persists until it is manually reset (or rebooted). We
only keep one error state, the first error is usually the most important
and so later errors do not overwrite it. This bug is one of the
exceptions.
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Thanks, I'll check the state periodically and reset it if it's spurious.
Will try to report with ubuntu-bug next time.
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https://bugs.launchpad.net/bugs/1211123
Title:
Xorg i915
