On Fri, Oct 5, 2018 at 11:21 PM, Theron <theron.tar...@gmail.com> wrote:
% /compat/linux/opt/VirtualGL/bin/glxinfo | grep OpenGL
libGL error: MESA-LOADER: failed to retrieve device information
Do you have linsysfs mounted?
Try reading /compat/linux/sys/class/drm/card0/device/uevent.
Mesa won't retrieve device information without linsysfs.
I wrote the linsysfs patch that exposed the info there so that recent
Mesa would work :)
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222375
(Wow, that was a year ago… interesting note from there: you might
need to set LIBGL_DRI3_DISABLE=1 for Linux apps)
Also, what's with the "/opt/VirtualGL"? Are you using mesa from
linux-c7 or something… weird?
This problem has existed forever. I am not sure it is actually a
fault in Linux emulation, as these very same symptoms ("failed to
retrieve device information" message, console freeze) existed back in
FreeBSDDesktop/freebsd-base-graphics days when attempting to run
purely FreeBSD OpenGL apps. At the time the workaround was a patch
to Mesa's GPU detection; the underlying kernel problem wasn't
addressed.
There was a somewhat related issue (but not the same one, FreeBSD and
Linux versions of mesa/libdrm use different mechanisms to get device
info).
Mostly affected Wayland-EGL clients — they would try to access
/dev/dri/card408 instead of /dev/dri/card0, fail to get info and fall
back to software rendering.
I fixed it a while ago:
https://gitlab.freedesktop.org/mesa/mesa/commit/db8519a369261cdedda50852facc45616d4eba28
But I never saw console freezes when Mesa couldn't properly detect the
GPU o_0
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