PlexMediaServer Crashes on Every HW Transcode - Ubuntu 20.04.3 LTS

Plex Media Server Desktops & Laptops
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Server Version#: 1.25.4.5468
Player Version#: (any)
OS: Ubuntu 20.04.3 LTS
Kernel: 5.16.4-051604-generic
CPU: Alder Lake 12600k
GPU: None

I’ve been spinning my wheels on this for a few days now and feel like it might be an obvious fix to someone here. When hardware acceleration (via quicksync) is enabled, every time any client transcodes video, the PlexMediaServer service on Ubuntu crashes. Plex logs aren’t particularly helpful, but happy to provide other logs if those might give some insight.

I could be wrong, but I think I’ve narrowed it down to a couple firmware issues with the igpu:

root@# cat /sys/kernel/debug/dri/0/gt/uc/guc_info
GuC firmware: i915/tgl_guc_62.0.0.bin
        status: ERROR
        version: wanted 62.0, found 0.0
        uCode: 0 bytes
        RSA: 0 bytes

GuC status 0x00000001:
        Bootrom status = 0x0
        uKernel status = 0x0
        MIA Core status = 0x0

Scratch registers:
         0:     0x0
         1:     0x0
         2:     0x0
         3:     0x0
         4:     0x0
         5:     0x0
         6:     0x0
         7:     0x0
         8:     0x0
         9:     0x0
        10:     0x0
        11:     0x0
        12:     0x0
        13:     0x0
        14:     0x0
        15:     0x0

root@# cat /sys/kernel/debug/dri/0/gt/uc/huc_info
HuC firmware: i915/tgl_huc_7.9.3.bin
        status: ERROR
        version: wanted 7.9, found 0.0
        uCode: 0 bytes
        RSA: 0 bytes
HuC status: 0x00000000

For one, I’m not sure why it wants a Tiger Lake bin, but can’t figure out how to point it towards one of the Alder Lake bins instead.

Also, I’ve since added the missing bin files to /lib/firmware/i915 and run the following commands as well as updated my kernel from 5.16.0 to 5.16.4

update-initramfs -u -k all
update-grub

No change. Any thoughts? I feel like I’m missing something obvious with my lack of Linux experience.

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I think there are still some issues with the more recent Intel CPUs like Alder Lake and HW Transcoding. Hope it will be fixed soon.

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