Is there another place to report this kind of issue? Didn't get any feedback. Did I make mistakes in my mail? I already tried the Ubuntu bug-tracker (see below) with no success.
Thank you,
Arno
My laptop (core m5-6y54) starts flickering after returning from Suspend (to RAM) or other commands touching the video driver (xrandr, powertop --calibrate, ...)
From kernel (tested with up to 5.7) I get the message:
[drm:intel_
cpu_fifo_ underrun_ irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun I added a bug with more details here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872760
but guys from Ubuntu seems not able to help (as it is an upstream bug) !?
This happend not in older kernels, but these have the problem not to go in power save states. So I think the fix of that
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863489
causes this regression.
Hope someone can help. For a laptop it is better to have both - standby and power saving. Thank you.
Arno
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