Public bug reported: I have an Elantech multitouch touchpad, which worked well under 11.10 and 12.04 alphas.
Tapping or touching the multitouch touchpad on my laptop with three fingers now 'locks up' the display. When this happens, the mouse cursor is still visible and can be moved, and changes based on what should be displayed underneath (e.g. text entry fields, etc.) but no updates to the display are made. E.g. switching to a virtual terminal and back to X leaves the virtual terminal text on the screen but shows the mouse cursor; moving over where a text entry box 'should' be changes the cursor to the vertical bar, etc. This can be resolved by switching to a virtual terminal and issuing 'unity --replace'. This behavior does not always appear; three-finger taps seem to be fine immediately after a reboot. At some point after boot this changes. It also seems to always break if I have put the computer to sleep and woken it. Steps to reproduce: 1. Wait some time after booting system. (Less than ~2 hours; I will try to narrow this down further.) 2. Touch the touchpad with three fingers. (Tap, drag, or rest.) Observed behavior: X display is no longer responsive, modulo the mouse cursor. This persists until 'unity --replace' is run. Expected behavior: Three finger tap is detected and used appropriately. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: compiz 1:0.9.7.0~bzr2995-0ubuntu5 ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9 Uname: Linux 3.2.0-18-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 1.94-0ubuntu2 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] CompositorRunning: compiz Date: Wed Mar 7 11:44:16 2012 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu EcryptfsInUse: Yes GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device [1043:1427] InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301) MachineType: ASUSTeK Computer Inc. UX31E PackageArchitecture: all ProcEnviron: TERM=xterm LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-generic root=UUID=4ec94e7b-aa55-48d3-9f37-8659216b2249 ro i915.i915_enable_rc6=1 i915.semaphores=1 pcie_aspm=force quiet splash vt.handoff=7 SourcePackage: compiz UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/25/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: UX31E.207 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UX31E dmi.board.vendor: ASUSTeK Computer Inc. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK Computer Inc. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX31E.207:bd10/25/2011:svnASUSTeKComputerInc.:pnUX31E:pvr1.0:rvnASUSTeKComputerInc.:rnUX31E:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0: dmi.product.name: UX31E dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK Computer Inc. version.compiz: compiz 1:0.9.7.0~bzr2995-0ubuntu5 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.30-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.1-0ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.1-0ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.99.901+git20120126-0ubuntu2 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 2:2.17.0-1ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2 ** Affects: compiz (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug compiz-0.9 precise regression reproducible ubuntu -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/949162 Title: Three finger touch locks up display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/949162/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs