Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Intermittently Firefox 4.0.1 is crashing on Ubuntu 11.04 and logging out. Sometimes it happens if I open an arbitrary website such as I am NOT streaming any videos. Please let me know how to solve this or at least reasons behind this.

share|improve this question

closed as off topic by Marco Ceppi Feb 6 '12 at 0:06

Questions on Ask Ubuntu are expected to relate to Ubuntu within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

I suspect it's an issue with your video card combined with newer Firefox technologies. Try turning off WebGL:

  1. Navigate to the URL about:config
  2. Search for webgl.disabled
  3. Make sure it's set to true (double-click on it if not)

If you want to debug the issue, you need to save the file ~/.xsession-errors before login again in the desktop:

  1. Switch to a virtual text console by pressing Ctrl + Alt + F1
  2. Login
  3. Copy the file: cp .xsession-errors name-of-desired-file
  4. Logout by executing exit
  5. Switch back to the GUI by pressing Ctrl + Alt + F7 (or F8 if F7 didn't work)
  6. Profit! (read the bottom of name-of-desired-file from step 3)
share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.