Bug#1076708: short screen blackouts on intel iris+ 640 gpu when watching videos, reports of CPU pipe FIFO underrun errors from i915 module in logs

This seems to be the same or a very similar issue as posted here: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/5455 I will be posting further updates there.

Bug#1076708: short screen blackouts on intel iris+ 640 gpu when watching videos, reports of CPU pipe FIFO underrun errors from i915 module in logs

I've just replicated this bug on Ubuntu-24.04 (kernel 6.8.0-39-generic), so it seems to be an upstream bug rather than a Debian specific.

Bug#1076708: short screen blackouts on intel iris+ 640 gpu when watching videos, reports of CPU pipe FIFO underrun errors from i915 module in logs

Just in case I've just verified that the issue occurs both when watching videos with codecs that are and are not hardware-supportted by my GPU. Nevertheless in case it matters I have the following video-related packages installed: intel-media-va-driver:amd64 24.2.5+dfsg1-1 intel-media-va-driver: