ubuntu-x-swat team mailing list archive

[John Neffenger <901793@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

The X.Org X server on my Dell Precision 490 Workstation freezes
consistently and permanently each time I load the Web page at the
following address on my Ubuntu 11.10 "oneiric" system running Unity 2D:

  http://www.google.ca/nexus

I never encountered such freezes in the previous release of Ubuntu
(11.04 "natty"). The freeze happens with both Mozilla Firefox 8.0 and
Chromium 15.0.874.106 (Developer Build 107270 Linux). No updates to the
screen occur (no clock updates, for example), but I can SSH into the
system to gather information and reboot. There is usually no CPU
activity, but one out of the four freezes yesterday had X using over 50
percent CPU usage during the freeze.

I followed the instructions here:

  https://wiki.ubuntu.com/X/Troubleshooting/Freeze

to capture the dmesg output and Xorg.0.log file for each of the four
freezes yesterday. Below are the answers to the questions recommended on
that page.

Q: When did you upgrade to this version of Ubuntu? When did you first
notice the freezes occurring?

A: I upgraded about 3 weeks ago and first noticed the freezes about 2
weeks ago while using the Web browser.

Q: How frequently do the freezes occur? How many per day would you say
you experience?

A: They occur about once per week, but yesterday I found a Web site
(www.google.ca/nexus) that can cause the freeze each and every time it
loads in a Web browser (Firefox and Chromium).

Q: List the applications you typically have open at the time of the
freeze.

A: I usually have open at least the Web browser (Firefox or Chromium)
and the Terminal. I may also have open GnuCash, a VirtualBox guest
running Windows, NetBeans, and Thunderbird.

Q: Think back to the last few times it froze. What activities were you
doing in each of those times?

A: The last four times it froze, I simply clicked a link to go to the
site www.google.ca/nexus or loaded it directly from the address bar.

Q: Do you have compiz enabled? Does the issue go away if you disable it?

A: I am running Unity 2D, the Unity interface for non-accelerated
graphics cards. I see compositing effects, so perhaps I'm running
compiz. I'll look into disabling it.

Q: If your system is a laptop, do you suspend/resume it? Had you resumed
at some point prior to the freezes?

A: My system is a Dell Precision 490 Workstation. I suspend it at night,
but this freeze occurs even right after a fresh reboot after visiting
the Google Nexus page.

Additional information:

$ lsb_release -rd
Description:	Ubuntu 11.10
Release:	11.10

$ apt-cache policy xserver-xorg-video-nouveau
xserver-xorg-video-nouveau:
  Installed: 1:0.0.16+git20110411+8378443-1
  Candidate: 1:0.0.16+git20110411+8378443-1
  Version table:
 *** 1:0.0.16+git20110411+8378443-1 0
        500 http://ca.archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages
        100 /var/lib/dpkg/status

** Affects: xserver-xorg-video-nouveau (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/901793

Title:
  Xorg freezes visiting www.google.ca/nexus

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