Intel KBL GT2 + glamoregl = display corruption
I'm using xorg 1.20.8 (from debian unstable's 2:1.20.8-2 package), Intel KabyLake GT2 with modesetting driver on a Lenovo Yoga 3rd gen.
I'm experiencing a weird form of graphical glitch where most pop-up windows seem to be rendered (or at least blitted) "gradually" and in stripes, making the content impossible to read for entire seconds.
This happens when no screen compositor is in use. Capturing the screen via ffmpeg also prevents the behavior, so I had to record a video:
Menus and drop-downs are especially affected, and as you can see this is basically unusable. Any possible solution to this?