SOLVED: Jellyfin does not trancscode 4K HEVC in web player

[TheDreadPirate]

I just remembered something. #3 in this doc.

https://jellyfin.org/docs/general/admini...l-on-linux

The kernel range from 5.18 to 6.1.3 have an issue that locks up and resets the i915 kernel driver when using OpenCL based HDR/DV tone-mapping. Linux 5.18-, 6.0.18+, 6.1.4+ are not affected.

Ticket: https://gitlab.freedesktop.org/drm/intel/-/issues/7627

Fixed by: drm/i915: improve the catch-all evict to handle lock contention

Looking at your fix post, I see the resets.

Code:

[374749.835468] i915 0000:00:02.0: [drm] av:hevc:df0[3435242] context reset due to GPU hang
[374750.867290] i915 0000:00:02.0: [drm] GPU HANG: ecode 12:4:28fffffd

Consider updating to a newer/patched kernel.