Created attachment 78801 nexus valgrind log for latest attempt Still a bit buggy. On the nexus7 I can cause it to drop events in the same way still..
What I do is touch the ubuntu dash icon in upper left, then release finger and make a dragging motion with the dash icon. I'm not 100% sure if the touch was fully released, or it just stopped registering my finger. But this (still) results in the following spam from xserver: [Xi] Virtual core pointer: Failed to get event 8 for touchpoint 1 [Xi] Virtual core pointer: Failed to get event 8 for touchpoint 1 [Xi] Virtual core pointer: Failed to get event 8 for touchpoint 2 source device 7: history size 100 overflowing for touch 12 (history size overflowing repeated a lot, for touch 12 and 13) Stopping lightdm doesn't crash any more and shows no leak. Only thing that may or may not be relevant is a still reachable warning: ==3663== 16,384 bytes in 4 blocks are still reachable in loss record 245 of 246 ==3663== at 0x482D4B8: calloc (vg_replace_malloc.c:593) ==3663== by 0x216F23: WriteToClient (io.c:1017) ==3663== by 0x142667: WriteEventsToClient (events.c:5982) ==3663== by 0x142747: TryClientEvents (events.c:1968) ==3663== by 0x144905: DeliverEventToInputClients (events.c:2116) ==3663== by 0x144A99: DeliverEventsToWindow (events.c:2151) ==3663== by 0x144D51: ProcSendEvent (events.c:5411) ==3663== by 0x13B9D5: Dispatch (dispatch.c:432) ==3663== by 0x130D2F: main (main.c:295) Full log for the session is attached as vg.nexus -- 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/1068994 Title: button1 gets stuck after a while Status in OEM Priority Project: In Progress Status in OEM Priority Project precise series: In Progress Status in OEM Priority Project raring series: In Progress Status in Ubuntu on the Nexus 7: Confirmed Status in X.Org X server: In Progress Status in “xorg-server” package in Ubuntu: Confirmed Bug description: distro bug 1015183 after using the tablet for a while, the touchscreen fails to register button clicks anymore, since the "button" appears to be stuck "down". To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1068994/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp