ok, thanks to Maarten's debugging we've found the issue. listener->grab is not copied but rather referenced, leaving the grab stale once it was deleted. Reproducible test case is simply:
XGrabButton() pointer-emulating touch down XUngrabButton() trigger touch update/end This doesn't necessarily crash, but once you run through valgrind to reset memory after freeing it we have a reliable crasher. -- 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 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 : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
