maintainer-feedback requested: [Bug 250011] graphics/libdrm: "MESA-LOADER: failed to retrieve device information" since 2.4.102

[bugzilla-noreply at freebsd.org]

Bugzilla Automation <bugzilla at FreeBSD.org> has asked freebsd-x11 (Nobody)
<x11 at FreeBSD.org> for maintainer-feedback:
Bug 250011: graphics/libdrm: "MESA-LOADER: failed to retrieve device
information" since 2.4.102
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250011



--- Description ---
Since the update of libdrm to 2.4.102 my graphics device is no longer
recognized by mesa.
The mesa-libs then fall back on the i915-dri-driver on my system. But there is
an Intel i965GM in my system. If an OpenGL application is started now, I get a
black screen and can only reset the laptop to get a display again. The
following error is logged in messages.
error: [drm:pid12:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU
hung
This is of course due to the wrong driver.
If I force the correct driver using the environment variable
MESA_LOADER_DRIVER_OVERRIDE=i965, the OpenGL applications work again.