Created attachment 78483 Xorg-valgrind.till-twist.gz Finally I succeeded to make X crashing again, I opened several programs (Firefox, Chromium, Thunderbird, Calculator, digikam), did some clicks in them, and closed them again. Then I opened LibreOffice Writer via the Launcher and got a window asking to recover a previous document which was not correctly closed. I rejected and when I answered the question whether I really want to reject with "Yes", X crashed.
Valgrind log attached. -- 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/1015183 Title: Inconsistent mouse events for Acer T231H multitouch monitor Status in HWE Next Project: New Status in X.Org X server: In Progress Status in “xorg-server” package in Ubuntu: In Progress Bug description: I already submitted this at http://askubuntu.com/questions/153043/ but decided to update to the latest development snapshot in order to give that a try and write a proper bug report if the issue persists. It does persist. My setup is a quantal alpha 1, just upgraded from precise, with an Acer T231H multitouch monitor connected to it, as well as an ordinary mouse for testing. The mouse events as X sends them to the applications are inconsitent. This can be debugged using xev. The first touch of the screen is preceeded by a MotionNotify event which already has state 0x100, i.e. left mouse button pressed. After that comes a ButtonPress event, again with state 0x100 although that value should indicate the state of the buttons before the event occurred. The subsequent drag is all right, and the ButtonRelease as well, but the 0x100 bit in the state value will never become zero again. Even if I've got an ordinary mouse connected as well, it will henceforth report every movement as if I were keeping the left mouse button down. The only cure that I could find was restarting the X server. Together with the ButtonPress and ButtonRelease events, this constant bit for left mouse button amounts to an inconsistent reporting of button state. Java applications e.g. will report every move as a drag due to this issue, with severe implications for focus management. This makes using differenent parts of the application almost impossible, as mouse movement will only be reported to the component where the mouse entered the application window. Since reporting at askubuntu, I've run some tests with evtest. The data coming from the event device looks sane enough: BTN_TOUCH events for the first finger, with value 1 for pressed and 0 for released. ABS_MT_TRACKING_ID for all fingers, with a non-negative value for pressed and -1 for released. The grouping into syn groups looks sane as well. So I'd say the kernel driver works as intended, and somewhere from there to the xevent layer, some internal state gets messed up. I'm willing to try out any patches you might propose, be it in an attempt to fix this, or only to gather more information. Expected behaviour: MotionNotify with state 0x000 when dragging the ordinary mouse MotionNotify with state 0x000 for move prior to touch, or no event at all ButtonPress with state 0x000 when touching the screen MotionNotify with state 0x100 while dragging the finger ButtonRelease with state 0x100 when lifting the finger MotionNotify with state 0x000 when dragging the ordinary mouse afterwards Actual behaviour: MotionNotify with state 0x000 when dragging the ordinary mouse before the first touch MotionNotify with state 0x100 for prior to ButtonPress event ButtonPress with state 0x100 when touching the screen MotionNotify with state 0x100 while dragging the finger ButtonRelease with state 0x100 when lifting the finger MotionNotify with state 0x100 when dragging the ordinary mouse afterwards ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: xserver-xorg-input-evdev 1:2.7.0-0ubuntu2 ProcVersionSignature: Ubuntu 3.4.0-5.11-generic 3.4.0 Uname: Linux 3.4.0-5-generic x86_64 ApportVersion: 2.2.3-0ubuntu5 Architecture: amd64 CurrentDmesg: [ 7.381404] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready Date: Tue Jun 19 17:56:46 2012 DistUpgraded: 2012-06-19 17:51:23,756 DEBUG enabling apt cron job DistroCodename: quantal DistroVariant: ubuntu InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.4.0-5-generic root=UUID=88133c52-550c-4c43-9da5-15f180bdb767 ro quiet splash vt.handoff=7 SourcePackage: xserver-xorg-input-evdev UpgradeStatus: Upgraded to quantal on 2012-06-19 (0 days ago) dmi.bios.date: 09/22/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 4.6.4 dmi.board.name: AMD HUDSON-M1 dmi.board.vendor: ZOTAC dmi.chassis.type: 3 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.4:bd09/22/2011:svn:pn:pvr:rvnZOTAC:rnAMDHUDSON-M1:rvr:cvn:ct3:cvr: version.compiz: compiz 1:0.9.7.8-0ubuntu3 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.33-1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.3-0ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.3-0ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu11 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.19.0-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20120614+36d3f8c-1 To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1015183/+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
