[Bug 259670] graphics/drm-kmod: sporadic GPU hang with i915kms

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259670

parv <[email protected]> changed:

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--- Comment #13 from parv <[email protected]> ---
I have also experienced GPU hang with i915km driver ("i915 1.6.0 20200313" from
"dmesg"; had installed "drm-devel-kmod" package) in X11 on window manager
restart. This has been on Framework laptop with Intel i5-1135G7 CPU on -CURRENT
of 20220303 snapshot & later of "main-n253773-57014f21e75" 20220313.
From recent hang ...

drmn0: GPU HANG: ecode 12:1:85dffffb, in MainThread [101934]
drmn0: Resetting rcs0 for stopped heartbeat on rsc0


Yesterday (or day before), after suspending the 'puter, it could not "resume";
had to do hard shutdown; can't say for sure if it was connected to the driver.

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