** Summary changed:
- Crash when touching trackpad with 10 fingers
+ Crash when touching Apple trackpad with 11 fingers
** Description changed:
- Using an Apple Magic Trackpad, pair it to the system and put down 10
+ Using an Apple Magic Trackpad, pair it to the system and put down 11
fingers. Unity-2D will freeze immediately and after a while X gets
restarted.
Running newest Precise with uTouch daily build PPA.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity-2d 5.8.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-21.34-generic 3.2.13
Uname: Linux 3.2.0-21-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0-0ubuntu4
Architecture: amd64
Date: Thu Apr 5 10:38:34 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64
(20120327.1)
PackageArchitecture: all
ProcEnviron:
- LANGUAGE=en_US:en
- TERM=xterm
- PATH=(custom, no user)
- LANG=en_US.UTF-8
- SHELL=/bin/zsh
+ LANGUAGE=en_US:en
+ TERM=xterm
+ PATH=(custom, no user)
+ LANG=en_US.UTF-8
+ SHELL=/bin/zsh
SourcePackage: unity-2d
UpgradeStatus: No upgrade log present (probably fresh install)
** No longer affects: unity-2d (Ubuntu)
** No longer affects: unity (Ubuntu)
** Package changed: xorg-server (Ubuntu) => xserver-xorg-input-synaptics
(Ubuntu)
** Changed in: xserver-xorg-input-synaptics (Ubuntu)
Status: Confirmed => In Progress
** Changed in: xserver-xorg-input-synaptics (Ubuntu)
Assignee: (unassigned) => Chase Douglas (chasedouglas)
** Description changed:
- Using an Apple Magic Trackpad, pair it to the system and put down 11
- fingers. Unity-2D will freeze immediately and after a while X gets
- restarted.
+ The default number of touch records allocated in the synaptics driver is
+ 10. The Apple multitouch trackpads support at least 11, which can occur
+ spuriously with 10 fingers on the device. The synaptics driver does not
+ do proper bounds checking on the touch record array, so when the 11th
+ touch occurs the X server crashes.
+
+ Original bug report
+ ===================
+ Using an Apple Magic Trackpad, pair it to the system and put down 11 fingers.
Unity-2D will freeze immediately and after a while X gets restarted.
Running newest Precise with uTouch daily build PPA.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity-2d 5.8.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-21.34-generic 3.2.13
Uname: Linux 3.2.0-21-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0-0ubuntu4
Architecture: amd64
Date: Thu Apr 5 10:38:34 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64
(20120327.1)
PackageArchitecture: all
ProcEnviron:
LANGUAGE=en_US:en
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/zsh
SourcePackage: unity-2d
UpgradeStatus: No upgrade log present (probably fresh install)
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https://bugs.launchpad.net/bugs/974017
Title:
Crash when touching Apple trackpad with 11 fingers
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