OK, so sounds like a Mir bug, but a Mir bug that only Unity8 would ever hit. Because the bug would only happen in clients (or nested servers) who use the relative motion data instead of the usual absolute motion data.
We're only delivering one relative motion event to Unity8 every 17ms (59Hz as intended). Therefore on your normal 125Hz mouse we're dropping 50% of the motion information. And on my 1000Hz mouse we're missing 94% of the motion data. It's a solid theory that explains everything we've seen. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mir in Ubuntu. https://bugs.launchpad.net/bugs/1539009 Title: Mouse cursor is unusably slow in Unity 8 with a 1000Hz mouse Status in Mir: Triaged Status in QtMir: Incomplete Status in mir package in Ubuntu: Triaged Status in qtmir package in Ubuntu: Incomplete Status in unity8 package in Ubuntu: Incomplete Bug description: Logging in to Unity8 on desktop (xenial) the mouse cursor moves glacially slow. I have to move the mouse across the whole desk to get anywhere. This is surprising given bug 1524145 shows the opposite is happening in the Mir demo servers. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: unity8 8.11+16.04.20160122-0ubuntu1 ProcVersionSignature: Ubuntu 4.3.0-7.18-generic 4.3.3 Uname: Linux 4.3.0-7-generic x86_64 ApportVersion: 2.19.4-0ubuntu1 Architecture: amd64 Date: Thu Jan 28 18:32:27 2016 InstallationDate: Installed on 2015-12-03 (56 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151202) SourcePackage: unity8 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/mir/+bug/1539009/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
