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    Jellyfin Forum Support Troubleshooting SOLVED: Arc750 Transcoding Issue

     
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    SOLVED: Arc750 Transcoding Issue

    Getting message playback error occurred when transcoding using Arc750
    SunGautam
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    #1
    2024-08-03, 08:21 PM (This post was last modified: 2024-08-03, 08:28 PM by SunGautam. Edited 1 time in total.)
    I'm running Jellyfin 10.9.3 on Ubuntu 24.04.

    My gpu is an Intel Arc 750. I followed the jellyfin Guide for the Intel GPU on Ubuntu.


    An issue arose when I recently tried to play AV1 files. If I was using automatically chosen player, a single image from the video would appear on screen and thee audio would stream normally. If i tried switching to exo player the video would hang and eventually error out. If I turn off hardware decode and stay on exoplayer, the video streams with no issues.

    So I looked  at the intel tool for GPU usage before transcoding
       

    And during

       

    And the transcoding via ffmpeg is using up 100% of the compute engine

    Below is the transcode log for an AV1 file

    .txt   Log.txt (Size: 18.06 KB / Downloads: 94)

    I've also attached one for an HVEC file

    .txt   Log2.txt (Size: 13.45 KB / Downloads: 85)
    Below is the jellyfinlog for that play attempt

    .txt   BaseLog.txt (Size: 55.75 KB / Downloads: 79)
    Both have the same result of blowing up my compute engine.

    Now the odd thing is that a couple months ago I was able to transcode multiple 4k AV1 files at the same time with the same setup. I'm not sure what has changed in between now and then aside from software updates. So I'm not sure what's going wrong here

    One thing I did notice is that for the Low Power encoding

    sudo cat /sys/kernel/debug/dri/0/gt/uc/guc_info
    sudo cat /sys/kernel/debug/dri/0/gt/uc/huc_info

    On my machine they're located at

    sudo cat /sys/kernel/debug/dri/0/gt0/uc/guc_info
    sudo cat /sys/kernel/debug/dri/0/gt0/uc/huc_info

    but even if I turn off low power encoding the issue is still there.
    10.9.3
    Go to solution
    TheDreadPirate
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    #2
    2024-08-03, 08:35 PM
    What kernel is your system running?

    sudo uname -a
    Jellyfin 10.10.7 (Docker)
    Ubuntu 24.04.2 LTS w/HWE
    Intel i3 12100
    Intel Arc A380
    OS drive - SK Hynix P41 1TB
    Storage
        4x WD Red Pro 6TB CMR in RAIDZ1
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    SunGautam
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    #3
    2024-08-04, 02:04 AM
    6.8.0-39-generic #39-Ubuntu SMP PREEMPT_DYNAMIC Fri Jul
    5 21:49:14 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
    TheDreadPirate
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    #4
    2024-08-04, 03:05 PM
    You need to roll back to 6.8.0-36. Starting with -38 Ubuntu's kernel inherited an upstream kernel bug that breaks transcoding almost completely for Arc GPUs. One of the Jellyfin devs and I submitted a bug report to Ubuntu asking them to back port a couple of patches to resolve the issue. But the kernel with both patches hasn't been released yet.

    https://bugs.launchpad.net/ubuntu/+sourc...ug/2072755
    Jellyfin 10.10.7 (Docker)
    Ubuntu 24.04.2 LTS w/HWE
    Intel i3 12100
    Intel Arc A380
    OS drive - SK Hynix P41 1TB
    Storage
        4x WD Red Pro 6TB CMR in RAIDZ1
    [Image: GitHub%20Sponsors-grey?logo=github]
    TheDreadPirate
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    Community Moderator

    Posts: 15,375
    Threads: 10
    Joined: 2023 Jun
    Reputation: 460
    Country:United States
    #5
    2024-09-10, 04:54 PM
    Ubuntu released 6.8.0-44 with all the patches that fix this issue.
    Jellyfin 10.10.7 (Docker)
    Ubuntu 24.04.2 LTS w/HWE
    Intel i3 12100
    Intel Arc A380
    OS drive - SK Hynix P41 1TB
    Storage
        4x WD Red Pro 6TB CMR in RAIDZ1
    [Image: GitHub%20Sponsors-grey?logo=github]
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