Ingo Ruhnke, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com /daily-live/current/ .
If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report: apport-collect -p xorg-server REPLACE-WITH-BUG-NUMBER Please note, given that the information from the prior release is already available, doing this on a release prior to the development one would not be helpful. Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** Changed in: xorg-server (Ubuntu) Importance: Undecided => Low ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1200074 Title: High CPU usage and unresponsivness when hotplugging a mouse Status in “xorg-server” package in Ubuntu: Incomplete Bug description: In both XUbuntu 13.04 and 13.10 Xorg will spike to 100% CPU usage for around 15 seconds whenever I hotplug a USB mouse. In this time not only is the CPU used fully, Xorg itself also becomes non-responsive, the mouse pointer itself, even from the newly plugged in mouse, will move just fine, but focus changes and button presses won't be registered until 15 seconds later. When I look with xev at the events at that time I will see around 4000 lines of this: MappingNotify event, serial 37, synthetic NO, window 0x0, request MappingKeyboard, first_keycode 10, count 1 MappingNotify event, serial 37, synthetic NO, window 0x0, request MappingKeyboard, first_keycode 10, count 1 MappingNotify event, serial 37, synthetic NO, window 0x0, request MappingKeyboard, first_keycode 10, count 1 MappingNotify event, serial 750, synthetic NO, window 0x0, request MappingKeyboard, first_keycode 218, count 1 [...] MappingNotify event, serial 750, synthetic NO, window 0x0, request MappingKeyboard, first_keycode 218, count 1 MappingNotify event, serial 750, synthetic NO, window 0x0, request MappingKeyboard, first_keycode 218, count 1 MappingNotify event, serial 750, synthetic NO, window 0x0, request MappingModifier, first_keycode 0, count 0 MappingNotify event, serial 750, synthetic NO, window 0x0, request MappingModifier, first_keycode 0, count 0 Some applications, most noticably xfce4-volumed, will themselves spike in CPU usage as a return to Xorg doing it and prolong the problem up to multiple minutes. But as the problem happens even without them running they don't seem to be the cause of it. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1200074/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
