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[BUG] Black Screen with GPU + KDE #274

@Ashkaan

Description

@Ashkaan

Is there an existing issue for this?

  • I have searched the existing issues

Current Behavior

I just get a black screen when accessing the webtop when I use any distro with KDE. I can't control anything or make anything happen on screen.

Expected Behavior

I should see a desktop.

Steps To Reproduce

docker compose up

Environment

- OS: TrueNAS 24.10
- How docker service was installed: built-in

CPU architecture

x86-64

Docker creation

name: webtop
services:
  webtop:
    container_name: webtop
    deploy:
      resources:
        reservations:
          devices:
            - driver: nvidia
              count: all
              capabilities:
                - compute
                - video
                - graphics
                - utility
    environment:
      - PUID=3000
      - PGID=3000
      - TZ=America/Los_Angeles
      - TITLE=Ashkaan's Fedora
    image: lscr.io/linuxserver/webtop:ubuntu-kde
    network_mode: bridge
    ports:
      - 3000:3000
    restart: unless-stopped
    security_opt:
      - seccomp:unconfined
    shm_size: 1gb
    volumes:
      - /mnt/pool/docker/webtop:/config
      - /etc/resolv.conf:/etc/resolv.conf:ro
networks:
  bridge: {}


### Container logs

```bash
_XSERVTransmkdir: ERROR: euid != 0,directory /tmp/.X11-unix will not be created.

Activity

github-actions

github-actions commented on Nov 16, 2024

@github-actions

Thanks for opening your first issue here! Be sure to follow the relevant issue templates, or risk having this issue marked as invalid.

dfldylan

dfldylan commented on Nov 21, 2024

@dfldylan

I have the same issue. After cancel nvidia setup, this issue disappear.

Or downgrade webtop to ubuntu-jammy (before 22.04.24)

I guess my host is ubuntu-jammy(instead of noble), so maybe run high-version ubuntu will cause this?

dfldylan

dfldylan commented on Nov 23, 2024

@dfldylan

#243 same here

thelamer

thelamer commented on Nov 23, 2024

@thelamer
Member

Does debian-kde work with the same settings?

Ashkaan

Ashkaan commented on Dec 6, 2024

@Ashkaan
Author

No, it doesn't. In fact, neither does ubuntu-xfce anymore, which did work on a previous version.

LinuxServer-CI

LinuxServer-CI commented on Jan 6, 2025

@LinuxServer-CI
Contributor

This issue has been automatically marked as stale because it has not had recent activity. This might be due to missing feedback from OP. It will be closed if no further activity occurs. Thank you for your contributions.

Ashkaan

Ashkaan commented on Jan 6, 2025

@Ashkaan
Author

Hey team, this container is still not working for me. What can we do to fix the issue?

LinuxServer-CI

LinuxServer-CI commented on Feb 7, 2025

@LinuxServer-CI
Contributor

This issue has been automatically marked as stale because it has not had recent activity. This might be due to missing feedback from OP. It will be closed if no further activity occurs. Thank you for your contributions.

real-limitless

real-limitless commented on Mar 6, 2025

@real-limitless

I was able to work around this issue by doing a podman exec -it <container_name> bash and manually executing the startwm.sh
script inside /defaults

Another way I was able to work around this issue was by starting the desktop wm manually as well.

LinuxServer-CI

LinuxServer-CI commented on Apr 7, 2025

@LinuxServer-CI
Contributor

This issue has been automatically marked as stale because it has not had recent activity. This might be due to missing feedback from OP. It will be closed if no further activity occurs. Thank you for your contributions.

Xitee1

Xitee1 commented on May 1, 2025

@Xitee1

I'm new to webtop and having the same issue. It worked flawlessly and worked instantly without much configuration on pretty much all hosts but not so on a machine running Kubuntu KDE.

While writing this, suddenly the desktop just appeard and seems to be working. I did an test by restarting the container - turns out it just takes really really long (about 5 minutes) to come up while on all other hosts (even ones with less performance) it's nearly instant.

mg-dev25

mg-dev25 commented on May 1, 2025

@mg-dev25

The black screen is not a bug, it is a normal behavior implement by kasmvnc to indicate the GPU driver is not correct. Often this is because, when using KDE, the host for nvidia card, don't use the open source driver.

Xitee1

Xitee1 commented on May 2, 2025

@Xitee1

Oh I think I'm not having the exact same issue, this here is related to GPU. I do not even try to use a GPU. It just takes really long to start displaying a picture on this specific host and I can't figure out what is wrong. There's nothing in the logs that differs from the other hosts. Super annoying having to wait 5+ minutes after doing a restart of the container.

mg-dev25

mg-dev25 commented on May 3, 2025

@mg-dev25

@Xitee1 You need to share the yml docker compose file, for us to help you.

LinuxServer-CI

LinuxServer-CI commented on Jun 2, 2025

@LinuxServer-CI
Contributor

This issue has been automatically marked as stale because it has not had recent activity. This might be due to missing feedback from OP. It will be closed if no further activity occurs. Thank you for your contributions.

thelamer

thelamer commented on Jun 17, 2025

@thelamer
Member

Images have been completely overhauled, if you still have an issue open a new one.

moved this from Issues to Done in Issue & PR Trackeron Jun 17, 2025
LinuxServer-CI

LinuxServer-CI commented on Jul 18, 2025

@LinuxServer-CI
Contributor

This issue is locked due to inactivity

locked as resolved and limited conversation to collaborators on Jul 18, 2025
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          [BUG] Black Screen with GPU + KDE · Issue #274 · linuxserver/docker-webtop