Videos that Trigger the Issue

Oct 13, 2025 by wbrum.org 149 views

[Bug]: Graphical Corruption During Video Playback on LNL

In this article, we will be discussing a bug that causes graphical corruption during video playback on LNL. This bug has been observed in multiple applications, such as Firefox and VLC, with hardware acceleration enabled. The bug occurs under various desktop environments, including KDE Plasma and Sway.

Symptoms

The bug manifests as a rectangle in the upper left corner of the video, which is usually green or pink in color. This rectangle never appears in any other location and is a consistent occurrence during video playback. The bug has been observed on multiple videos and various codecs, including AV1, VP9, and H.264.

Usage Scenario

The bug is typically observed during web browsing and video playback. It is essential to note that the bug is seemingly random and can occur at any time during video playback.

System Information

The system information for the affected machine is as follows:

Kernel version: 6.13.6
Mesa version: 24.3.4
CPU: Intel(R) Core(TM) Ultra 7 258V
GPU: Intel Corporation Lunar Lake [Intel Arc Graphics 130V / 140V] [8086:64a0] (rev 04)
Intel Media Driver: version 25.1.2
libva: 2.22.0
libva-utils: 2.22.0
intel-gmmlib: 22.6.0

Debug Information

The debug information for the affected machine is as follows:

vainfo:

Trying display: wayland
vainfo: VA-API version: 1.22 (libva 2.22.0)
vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 25.1.2 ()
vainfo: Supported profile and entrypoints
      VAProfileNone                   :	VAEntrypointVideoProc
      VAProfileMPEG2Simple            :	VAEntrypointVLD
      VAProfileMPEG2Main              :	VAEntrypointVLD
      VAProfileH264Main               :	VAEntrypointVLD
      VAProfileH264Main               :	VAEntrypointEncSlice
      VAProfileH264High               :	VAEntrypointVLD
      VAProfileH264High               :	VAEntrypointEncSlice
      VAProfileJPEGBaseline           :	VAEntrypointVLD
      VAProfileJPEGBaseline           :	VAEntrypointEncPicture
      VAProfileH264ConstrainedBaseline:	VAEntrypointVLD
      VAProfileH264ConstrainedBaseline:	VAEntrypointEncSlice
      VAProfileVP8Version0_3          :	VAEntrypointVLD
      VAProfileHEVCMain               :	VAEntrypointVLD
      VAProfileHEVCMain               :	VAEntrypointEncSlice
      VAProfileHEVCMain10             :	VAEntrypointVLD
      VAProfileHEVCMain10             :	VAEntrypointEncSlice
      VAProfileVP9Profile0            :	VAEntrypointVLD
      VAProfileVP9Profile1            :	VAEntrypointVLD
      VAProfileVP9Profile2            :	VAEntrypointVLD
      VAProfileVP9Profile3            :	VAEntrypointVLD
      VAProfileHEVCMain12             :	VAEntrypointVLD
      VAProfileHEVCMain422_10         :	VAEntrypointVLD
      VAProfileHEVCMain422_10         :	VAEntrypointEncSlice
      VAProfileHEVCMain422_12         :	VAEntrypointVLD
      VAProfileHEVCMain444            :	VAEntrypointVLD
      VAProfileHEVCMain444            :	VAEntrypointEncSlice
      VAProfileHEVCMain444_10         :	VAEntrypointVLD
      VAProfileHEVCMain444_10         :	VAEntrypointEncSlice
      VAProfileHEVCMain444_12         :	VAEntrypointVLD
      VAProfileHEVCSccMain            :	VAEntrypointVLD
      VAProfileHEVCSccMain            :	VAEntrypointEncSlice
      VAProfileHEVCSccMain10          :	VAEntrypointVLD
      VAProfileHEVCSccMain10          :	VAEntrypointEncSlice
      VAProfileHEVCSccMain444         :	VAEntrypointVLD
      VAProfileHEVCSccMain444         :	VAEntrypointEncSlice
      VAProfileAV1Profile0            :	VAEntrypointVLD
      VAProfileAV1Profile0            :	VAEntrypointEncSlice
      VAProfileHEVCSccMain444_10      :	VAEntrypointVLD
      VAProfileHEVCSccMain444_10      :	VAEntrypointEncSlice
      VAProfileVVCMain10              :	VAEntrypointVLD
      VAProfileVVCMultilayerMain10    :	VAEntrypointVLD

Videos that Trigger the Issue

The following videos have been observed to trigger the issue:

Link 1
Link 2

Conclusion

In conclusion, the bug causes graphical corruption during video playback on LNL. The bug is seemingly random and can occur at any time during video playback. The system information and debug information provided should be helpful in identifying the root cause of the issue. If you are experiencing this issue, please provide more information and any relevant logs to help diagnose the problem.
[Bug]: Graphical Corruption During Video Playback on LNL - Q&A

Q: What is the bug that causes graphical corruption during video playback on LNL?

A: The bug is a graphical corruption issue that occurs during video playback on LNL. It manifests as a rectangle in the upper left corner of the video, which is usually green or pink in color.

Q: What applications are affected by this bug?

A: The bug has been observed in multiple applications, including Firefox and VLC, with hardware acceleration enabled.

Q: What desktop environments are affected by this bug?

A: The bug occurs under various desktop environments, including KDE Plasma and Sway.

Q: What codecs are affected by this bug?

A: The bug has been observed on multiple videos and various codecs, including AV1, VP9, and H.264.

Q: Is the bug random or predictable?

A: The bug is seemingly random and can occur at any time during video playback.

Q: What system information is required to diagnose the issue?

A: The following system information is required to diagnose the issue:

Kernel version
Mesa version
CPU
GPU
Intel Media Driver version
libva version
libva-utils version
intel-gmmlib version

Q: What debug information is required to diagnose the issue?

A: The following debug information is required to diagnose the issue:

vainfo output

Q: What videos have been observed to trigger the issue?

A: The following videos have been observed to trigger the issue:

Link 1
Link 2

Q: Is there a patch available to fix the issue?

A: No, there is no patch available to fix the issue at this time.

Q: How can I contribute to fixing the issue?

A: If you are experiencing this issue, please provide more information and any relevant logs to help diagnose the problem. You can also contribute to fixing the issue by providing a patch or reporting the issue on the relevant bug tracker.

Q: What is the next step in diagnosing the issue?

A: The next step in diagnosing the issue is to gather more information about the system and the video playback process. This may involve collecting logs, system information, and debug output to help identify the root cause of the issue.