Ubuntu
firefox package

  1. Bug #1977790
  2. Comment #0

Comment 0 for bug 1977790

Revision history for this message
Yao Wei (medicalwei) wrote :

[Summary]
Firefox on Ubuntu 20.04 (99.0build2-0ubuntu0.20.04.2) window could be glitched with laptops with Intel + NVIDIA GPU, and prime-select set to intel.

Either setting gfx.x11-egl-force-disabled to true in about:config, or setting prime-select to on-demand or nvidia, makes the issue unreproducible.

Note that through GUI, prime-select cannot be set to intel.

Reproducibility: 1/8

[Reproduce Steps]
1. Run `sudo prime-select intel` in Terminal then reboot
2. Open Firefox window
3. Close Firefox window
4. Repeat until window is glitched (usually Firefox being transparent except the borders of the window)

[Results]
Expected: Firefox should not have its window glitched
Actual: Firefox is glitched with window being transparent but the border, and every window on top of it draws on the Firefox window. Video attached.