Heavy stuttering in Firefox with mutter 45.1/45.2
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
mutter (Ubuntu) |
Fix Released
|
High
|
Unassigned | ||
Mantic |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
[ Impact ]
There is heavy stuttering visible in Firefox with mutter 45.1/45.2 when kinetic scrolling a non-animated web page with a touchpad. This is a regression introduced upstream in mutter 45.1 (8f27ebf8).
[ Test Plan ]
0. Find a laptop with a touchpad.
1. Open a simple web page like a Wikipedia page in Firefox.
2. Use two fingers on the touchpad to fling it so it continues scrolling.
Expect: The scrolling proceeds and slows perfectly smoothly.
[ Where problems could occur ]
Anywhere in frame scheduling (visual smoothness), since that is the code affected.
[ Other Info ]
The bug was introduced upstream in 45.1 by https:/
https:/
https:/
[ Workaround ]
In /etc/environment:
MUTTER_
or "never" also works. Just not "auto" because the bug is in auto mode (the default).
description: | updated |
description: | updated |
description: | updated |
summary: |
- Heavy stuttering in mutter 45.1/45.2 (especially Firefox) + Heavy stuttering in Firefox with mutter 45.1/45.2 |
description: | updated |
tags: |
added: regression-update removed: regression-proposed |
Changed in mutter (Ubuntu): | |
importance: | Undecided → High |
description: | updated |
description: | updated |
I see this was filed on the 13th. Had this been mentioned in the 45.2 mantic SRU bug[1], I wouldn't have released the package to updates on the 14th :/
1. https:/ /bugs.launchpad .net/ubuntu/ +source/ mutter/ +bug/2043000