Screen sometimes black after boot

[kanflo]

Describe the bug The purple Ubuntu login screen appears for a second and the the all connected screens go black. The caps lock light works, brightness buttons do nothing. A forced shutdown and power up solves the issue, lightning all connected screens in purple and displaying the login screen.

Expected behavior No need for reboot :)

Screenshots N/A

Version

• OS: Ubuntu 21.04
• Kernel: 5.13.19, 5.14.21 and 5.15.13

Additional context N/A

[kanflo]

Actually, pressing the power key on the side (opening the power off dialogue), pressing tab and then enter does the same as the forced shutdown. Keyboard input thus works, but the display remains black.

[kanflo]

Issue disappeared with Ubuntu 22.04.2 LTS.