Comment # 6
on bug 104599
from Mario Kleiner
(In reply to Tapani Pälli from comment #4) > (In reply to Mario Kleiner from comment #3) > > This is running the new GNOME based Ubuntu GUI with Gnome-Shell Wayland, > > right? > > > > With "Windows control did not work" you mean it doesn't respond to > > mouse-clicks? > > > > In that case it is known bugs/limitations in gnome-shell for depth 30/10bpc > > mode. GNOME Shells picking code can't handle 10 bit per color channel. > > > > Additionally Gnome-Shells Wayland compositor doesn't handle anything but > > bgrx8888 or bgra8888 framebuffers in its drm/kms backend. It takes whatever > > framebuffer format it gets, e.g., bgrx1010102 and hands it to the kernel as > > bgrx8888, so the gpu misinterprets a 10 bit image as a 8 bit image during > > scanout, which ends badly. > > Right, so this is NOTOURBUG. Zebulon, your issue should disappear when you > do apt-get update again since allow_rgb10_configs defaults to 'false'. > > Mario, do you know if there us existing Gnome bug about this? (did not find > such) Maybe easiest workaround for them would be to ignore 10bpc until > picking and kms backend is fixed. None that i would know of. I haven't filed one so far.
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