Created attachment 1907484 [details] Image of the narrowed gdm login screen Description of problem: This is seen on Fedora36/Core2Duo E7500, Intel Integrated Graphics, with dual-monitor. After the upgrade of mesa-dri-drivers (whether in isolation or with the upgrade of the whole system), gdm login screen gets garbled: the login prompt and top panel all get displayed to the left with narrowed font, prompt box, icons. The mouse pointer becomes uncoordinated from the display as it is not able to click the prompt/panel where they are displayed, but can only click them where there would normally have been - ie. the middle of the screen for login prompt and top right for the panel. Also the typed password, though it takes effect, does not cause the usual '******' string to appear in the password box. Similarly, after login the usable portion of GNOME display is shifted to the left portion of the screen with all fonts and icons narrowed. But i3wm (Xorg) is not affected by this issue after login. The issue disappears once mesa-dri-drivers is downgraded and gdm is restarted: sudo dnf downgrade mesa-dri-drivers-22.0.1-1.fc36 sudo systemctl restart gdm Version-Release number of selected component (if applicable): mesa-dri-drivers-22.1.7-1.fc36 Verified that the problem is reproduced also in mesa-dri-drivers-22.2.0~rc3.fc38. Steps to Reproduce: 1. sudo dnf upgrade mesa-dri-drivers-22.1.7-1.fc36 2. sudo systemctl restart gdm 3. Problem manifests Actual results: Garbled gdm login screen uncoordinated with the mouse pointer, as described above Expected results: Normal gdm login prompt Additional info: Screenshots of the garbled gdm and gnome displays attached
Created attachment 1907488 [details] Image of the narrowed GNOME workspace
The problem seems to be in i915 driver. Using swrast instead works around the issue. In /etc/environment: MESA_LOADER_DRIVER_OVERRIDE="swrast"
Update: In Fedora 37 (GNOME 43.2) the above workaround is no longer needed and the problem does not manifest. In fact now it is the above workaround MESA_LOADER_DRIVER_OVERRIDE="swrast" that causes much flickering in both GDM and GNOME.
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