Fedora 45 Beta Cosmic spin fails to start into a graphical session

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Problem

Fedora 45 Beta Cosmic spin doesn’t start into a graphical session, as it should. This involves both the installation Live image and the install system. You get dropped to a text terminal instead.

In the system journal, you can see an error:

Failed to add device /dev/dri/card1: Failed to obtain file descriptor for drm device: /dev/dri/card1

Cause

There’s a clash between Cosmic Greeter and kmscon both allocating the graphics card.

Related Issues

Bugzilla report: #2531653

Workarounds

  1. If you’re running the installation image, use the text prompt to log in as liveuser with no password
  2. Run the following command: sudo systemd-run --unit=cosmic-kmscon-test --collect /bin/sh -c 'systemctl stop kmsconvt@tty1.service; systemctl restart cosmic-greeter.service'
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You can discuss this issue in Ask Fedora .

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An update has been released to fix this issue in Fedora Linux 45.

After you update your system in your usual way (and possibly reboot), you should no longer be affected by this problem. If the problem persists, please start a new discussion topic and we’ll help figure out what’s still wrong.

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Please note that the Fedora 45 Beta images continue to be affected by this bug, but final Fedora 45 images will work correctly.