(In reply to Pierre Moreau from comment #5)

> I tried running supertuxkart on my MCP79 (9400M), got some artefacts, but it
> did not freeze; the only error I got was “nouveau 0000:03:00.0: fifo:
> CACHE_ERROR - ch 1 [DRM] subc 0 mthd 0060 data 80000002”.

i got same artefact after launch gtk4-demo and after launch disk-usage-analizer

> Which version of Mesa, xf86-video-nouveau (or modesetting) did you have in
> those tests?

curently fedora:
kernel-4.16.0-0.rc2.git0.1
mesa-17.3.5-1
xorg-x11-drv-nouveau-1.0.15-3
xorg-x11-server-Xorg-1.19.6-5
libwayland-server-1.14.0-2