Plank freeze inexplicably, forcing me to reset the computer

[Willian Alberto da Cruz]

I'm using my computer normally when suddenly the Plank freezes and force me to reset my computer to continue the usage, this is kinda annoying, I got this problem a lot of times just today. In some cases, I was switching from one application to another selecting it's icon (not pressing alt+tab) and then it crashes.

ProblemType: Bug
DistroRelease: elementary OS 0.2
Package: elementary-desktop 1.295-0~369~precise1 [origin: LP-PPA-elementary-os-daily]
ProcVersionSignature: Ubuntu 3.2.0-39.62-generic 3.2.39
Uname: Linux 3.2.0-39-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.1+elementary3~precise1
Architecture: amd64
CrashDB: elementary_meta
Date: Tue Mar 19 19:19:30 2013
InstallationMedia: elementary OS 0.2 "Luna" - Beta 1 amd64 (20121114)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=pt_BR:
 PATH=(custom, no user)
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
SourcePackage: elementary-meta
SuspiciousXErrors:

ThirdParty: True
UpgradeStatus: No upgrade log present (probably fresh install)

[Rico Tzschichholz (ricotz)]

We can't do much without seeing a stacktrace of that crash which apport is suppose to provide after it really crashed.

[Paul Berden (paulberden)]

I have the same issue. How can I deliver you such a stacktrace?

[René Mujica Moreau (rene-mujica)]

I had the same problem, I couldn't get a stacktrace because the whole computer (except for the mouse cursor) freezed, even if I tried to Alt+fX to get a tty.

Please someone try to reproduce, I got it a lot when hovering on and off the dock, you will notice that the whole screen freezes but the cursor is still moveable.

How can I get the stacktrace of the latest crash? Because it is certain that something is crashing in the background, but I can't interact with it (when the OS freezes I can't do anything but reboot the computer).

My computer is a Lenovo E430 Thinkpad, with an Intel HD Graphics 3000.

[René Mujica Moreau (rene-mujica)]

PD: The bug was so anoying I had to switch to Xubuntu 12.10, I was using eOS beta as my main OS, but I couldn't stand it.

[René Mujica Moreau (rene-mujica)]

I have just reinstalled beta 1 and couldn't reproduce with the vanilla instalation of eOS, I will try to reproduce with latest updates.

[René Mujica Moreau (rene-mujica)]

I can reproduce the bug with the latests updates installed over beta 1. Just hover on the dock (so the tooltips appear over the icons) for a while and the screen will freeze completely, only updating the cursor. No keyboard interaction, only the mouse. I'm searching a way to get a stacktrace, but this is definitely a blocker for a Luna release.

[René Mujica Moreau (rene-mujica)]

Fixed when updating to quantal kernel+X stack using "sudo apt-get install linux-generic-lts-quantal xserver-xorg-lts-quantal "

[Paul Berden (paulberden)]

"Fixed when updating to quantal kernel+X stack using" same here. Thanks René!

[Scott Ringwelski (sgringwe)]

I have this issue as well.

[Scott Ringwelski (sgringwe)]

"sudo apt-get install linux-generic-lts-quantal xserver-xorg-lts-quantal" fixed issue for me too.

[Rico Tzschichholz (ricotz)]

This doesn't seem to be related to plank/pantheon-dock. More likely a gala or x-driver issue.

[Fabrício Daniel Freitas (nickarcos)]

I'm using elementary OS 0.3.2 Freya (64-bit), and I try the same problem. Why not bring by default, or automatic update to the updating quantal kernel + X because I was having the same problem?