[cfl] GPU Hang ecode 9:1:85dffffb on 5.6.11 in sway (wayland compositor unresponsive)
After a long time of usage (a few hours), my wayland compositor becomes unresponsive except for mouse movement. This conincides with a gpu hang with ecode 9:1:85dffffb. This has happened twice so far, with no apparent trigger.
I'm on Void Linux, kernel 5.6.11_1 x86_64. The affected device is a Lenovo T490s with Intel UHD Graphics 620 on an i7-8665U.