[Bug 251836] x11-wm/plasma5-kwin: freezes with iris (Intel Gen8+)

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=251836

--- Comment #17 from Jan Beich <jbeich at FreeBSD.org> ---
(In reply to Gleb Popov from comment #16)
> What's the patch needed for? Can't that env variable just set to 0 to make it work?

MESA_LOADER_DRIVER_OVERRIDE=i965 cannot be used on AMD GPUs as Mesa would fall
back to llvmpipe.

Sorry, I don't have experience writing OpenGL apps and don't have another GPU
to check why AMD or NVIDIA are not affected. Maybe Kwin fails to handle 1 as
buffer age (i.e., "previous swap was implemented as a copy").

All rolling Linux distributions (including Debian Sid) use iris by default, so
it's strange why only FreeBSD is affected. I've tried building mesa and kwin
with GCC but it didn't help.

-- 
You are receiving this mail because:
You are the assignee for the bug.