Since yesterday mpv stutters in fullscreen with

Issues & Assistance
1

Since yesterday mpv stutters in fullscreen with

kwin_wayland_drm: Presentation failed! Invalid argument

Rolling back kwin to r96 fixes it. Anybody else seeing this issue (Intel Arc)?

2

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3

Feel free to delete the thread. I’m not looking for support. It was just an informal question for another datapoint before potentially filing a formal bug report upstream. I thought the KDE 6 testing thread was the right place for that.

4

strange, I just tested it and it worked fine.

Tested with mpv on a 8K video, smooth and didn’t saw that error line.

Can you try latest version and see if its OK?

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Thanks for the testing. Yes, the issue is present with everything latest (esp. kwin 5.92.0.r121).

Also I wasn’t precise: The whole UI (including mpv) stutters along with 1 fps while mpv is play playing in fullscreen mode (screen recording).

Graphics 
Graphics:
  Device-1: Intel DG2 [Arc A750] driver: i915 v: kernel arch: Gen-12.7
    code: Alchemist process: TSMC n6 (7nm) built: 2022+ pcie: gen: 1
    speed: 2.5 GT/s lanes: 1 ports: active: DP-1,DP-2,HDMI-A-2 empty: DP-3,
    DP-4, HDMI-A-1, HDMI-A-3 bus-ID: 03:00.0 chip-ID: 8086:56a1 class-ID: 0300
  Display: wayland server: X.org v: 1.21.1.11 with: Xwayland v: 23.2.4
    compositor: kwin_wayland driver: X: loaded: modesetting
    alternate: fbdev,intel,vesa dri: iris gpu: i915 d-rect: 5394x3338
    display-ID: 0
  Monitor-1: DP-1 pos: top-right res: 1280x1024 size: N/A modes: N/A
  Monitor-2: DP-2 pos: middle-l res: 2194x1234 size: N/A modes: N/A
  Monitor-3: HDMI-A-2 pos: bottom-c res: 1920x1080 size: N/A modes: N/A
  API: EGL v: 1.5 hw: drv: intel iris platforms: device: 0 drv: iris
    device: 1 drv: swrast surfaceless: drv: iris wayland: drv: iris x11:
    drv: iris inactive: gbm
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 23.3.4-arch1.2.1
    glx-v: 1.4 direct-render: yes renderer: Mesa Intel Arc A750 Graphics (DG2)
    device-ID: 8086:56a1 memory: 7.75 GiB unified: no display-ID: :1.0
  API: Vulkan v: 1.3.276 layers: 8 device: 0 type: discrete-gpu name: Intel
    Arc A750 Graphics (DG2) driver: mesa intel v: 23.3.4-arch1.2.1
    device-ID: 8086:56a1 surfaces: xcb,xlib,wayland
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Can you give me full version name of the kwin package that still works?
I can try to do a “kwin_schlaefer” specific, build with everything latest, but hardcoded to that commit (if it builds).
EDIT: Or you can use this folder PKGBUILD to build a custom version.: just replace #branch=Plasma/6.0 to #commit=tralalalala in the source= line! :

If it works properly, than filing a bug report on kde/kwin would be the way to go.

2 Likes
7

Thanks for the instructions, that was very helpful.

Going back in the Plasma/6.0 branch the commit 2d085935 is the first breaking it.

I shot a report over at bugs.kde.

Currently I’m fine pinning the version before the offending commit. Thanks again. :+1:

1 Like
8

And already fixed! great stuff!

1 Like
9

Fix is merged. :clap:

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