** Description changed:
+ [ Impact ]
+
+ Heavy mouse cursor stutter is observed in Wayland sessions on some
+ machines, most visibly laptops with OLED panels when using the touchpad.
+ Using a high speed USB mouse can hide the issue.
+
+ [ Test Plan ]
+
+ 0. Find an affected machine.
+ 1. On the login screen move the cursor slowly from left to right. Expect no
stuttery jumps.
+ 2. Still on the login screen, move the cursor rapidly in small circles.
Expect almost perfectly even spacing between cursor sprites.
+
+ [ Where problems could occur ]
+
+ In scheduling of cursor movement or screen updates. If a mistake is made
+ then one could experience stuttering or freezes.
+
+ [ Original description ]
+
On an Asus Zenbook S 13 I experience heavy cursor stutter, but not under
all conditions...
Wayland on battery: Heavy stutter
Wayland on AC power: Light stutter
Xorg on battery: Perfectly smooth
Xorg on AC power: Perfectly smooth
Mutter version: 46.4
Display: 60.00Hz fixed frequency OLED
Touchpad: 144Hz-145Hz
** Changed in: mutter (Ubuntu Noble)
Status: Triaged => In Progress
** Summary changed:
- [Asus Zenbook S 13] Heavy cursor stutter
+ Heavy cursor stutter on OLED panels when using a touchpad
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https://bugs.launchpad.net/bugs/2076318
Title:
Heavy cursor stutter on OLED panels when using a touchpad
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