Found the problem! Somewhere is the bespoke input logic for Unity8 we're assuming the device is (typically) around 100Hz so also generates large motion deltas. That's incorrect. My mouse is configured for 1000Hz so generates small (but many) deltas. You can test this with a sufficiently capable mouse using kernel parameter: usbhid.mousepoll=1.
Removing that kernel parameter fixes the speed. Although we should fix Unity8 because Xorg and Mir's demo servers don't have such problems with 1000Hz mice. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1539009 Title: Mouse cursor moves way too slow in Unity 8 Status in QtMir: New Status in qtmir package in Ubuntu: New Status in unity8 package in Ubuntu: New 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/qtmir/+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
