[Intel-gfx] [i915] flip_done timed out errors with i7-1065G7 on kernel > 4.19

[Vincent Guenat]

Hello there,

I am seeing this error after recently installing Archlinux on my Razer 
Blade Stealth with the kernel version 5.7.12. I have seen it as well on 
4.19, 5.4.55 and 5.8.0.

The error happens during boot time where it significantly increases boot 
time. It starts with a time out in |drm_atomic_helper_wait_for_flip_done 
followed by more time out in |||drm_atomic_helper_wait_for_dependencies 
and |||||drm_atomic_helper_wait_for_flip_done, each of them taking about 
10 seconds (which is the value in the source code as far as I can see). 
There are 11-12 time out at each boot.|||
||||||
|||A similar issue was already discovered in previous version of the 
kernel, but the selected solution of adding video=SVIDEO-1:d to the 
kernel parameters has proved unsuccessful so far.|||
Note that Xorg also fails to launch, but this may be due to a 
misconfiguration from my side, as I start it with startx.

There is more details (including a dmesg output for the kernel version 
5.8.0) in my post on the Archlinux forums: 
https://bbs.archlinux.org/viewtopic.php?id=258051

Thank you for any time you may spend on this problem,
Vincent Guenat