45: Cursor stutters when using atomic KMS
In GNOME 45 the cursor stutters (looks like half frame rate) when using atomic KMS.
Confirmed on a 60Hz LCD with:
- Apple Magic Trackpad 2 (90Hz)
- Microsoft Intellimouse Explorer 3.0 (125Hz)
By contrast GNOME 44 on the same machine appears to be full frame rate. And this is on an Intel i7-12700 (unlike #2953 (closed)).
Workarounds that return the cursor to full frame rate:
MUTTER_DEBUG_DISABLE_HW_CURSORS=1
MUTTER_DEBUG_FORCE_KMS_MODE=simple
So the bug seems to be specific to atomic KMS.
Ubuntu bug: https://launchpad.net/bugs/2033719
Edited by Daniel van Vugt