Created attachment 142308 [details]
Xorg server log just after resolution switch
Using latest software ( linux-4.19.0, xf86-video-nouveau-1.0.15, mesa-18.2.=
3,
libdrm-2.4.96, xorg-server-1.20.3 ). When I try to change screen resolution
using xrandr to anything below native resolution the screen goes blank. To =
be
exact=20
issuing xrandr -s 1024x768 causes the flowing:
1) screen turns completely black right away
2) after some time ( no more that 500ms ), the screen changes to black with
backlight on. Looks a lot like no modesetting console without any content=20
3) this situation persists, indefinitely
What is interesting is that switching to console works. The console just wo=
rks.
However when I switch back to X, the above procedure repeats with one detai=
l -
for a brief moment ( at the same moment as step 1) ) the content of desktop=
in
selected resolution is visible. It seems that the desktop content is somewh=
ere
in memory but the driver decides to render some other area of memory
The only resolution to this problem that is working is to use older kernel,
linux-4.9.95 to be precise=20=20
I discovered the issue, playing games through wine. But to isolate the caus=
e I
gathered dmesg & xorg.log, running only an openbox and using xrandr to =
cause
the issue
I don't know what further info could be usefull