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Old 10-15-2011, 07:01 AM   #1
cliffd7
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firefox won't shut down


System is Ubuntu 10.04.
I use Firefox for web browsing, I then close it to do other work.
If I then try to reopen Firefox I get an error message;

"Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process or restart your system"


I cannot find a way to close the Firefox which is not responding and therefore have to shut down the PC and start again.
Has anyone else got this problem and /or a solution?
Thanks Cliff
 
Old 10-15-2011, 07:12 AM   #2
eSelix
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Yes, often, but you don't need to restart PC to close one ordinary application. You can "kill" it. Run terminal and give command:
Code:
pkill firefox
If it will not be killed in few seconds, you can check this with
Code:
pgrep firefox
(which will give you PID if firefox is running or nothing if not), you can do force kill it with
Code:
pkill -9 firefox
Forgot about solution: try to be upgraded to newest version (Ubuntu and applications), where errors or problems are repaired. Lastly I haven't problems with Firefox and I am using 11.04.

Last edited by eSelix; 10-15-2011 at 07:21 AM.
 
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Old 10-15-2011, 08:08 AM   #3
cliffd7
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Thank you eSelix
Cliff
 
Old 10-15-2011, 08:15 AM   #4
Fintan69
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You can also try the ctrl+alt+esc key combination
 
Old 10-16-2011, 05:12 AM   #5
cliffd7
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Thanks Fintan69 but ctrl+alt+esc does not work.
if I choose ctrl+alt+Enter it clears the screen but does not clear the obstacle.
The pkill firefox command suggested by eSelix is a complete answer.
I suspect that an even better answer is his/her suggestion to update to a later version.
Thanks to all
Cliff
 
Old 10-16-2011, 09:55 AM   #6
tommcd
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Quote:
Originally Posted by cliffd7 View Post
The pkill firefox command suggested by eSelix is a complete answer.
For what it's worth, there is yet another way to kill firefox:
Code:
killall firefox-bin
In linux there is often more than one way to skin a virtual cat!

If firefox is freezing or hanging often, you can try running firefox with a new profile in order to rule out a corrupted profile as the source of the problem. Simply close firefox and then launch it from the terminal with a new profile like this:
Code:
firefox -p
You will be given the option to create a new profile.

You could also try disabling all of your firefox addons / extensions. Then re-enable them one at a time to try to rule out a rogue addon as the source of the problem.
You could also try renaming your ~/.mozilla directory to ~/.mozilla.bak. Then restart firefox. This will create a brand new pristine ~/.mozilla directory.
You can always go back to your original ~/.mozilla directory (and your original profile) simply by changing ~/.mozilla.bak to ~/.mozilla:
Code:
mv ~/.mozilla.bak ~/.mozilla
Many firefox troubles can be traced to a corrupted profile and or a rogue addon or two. This can help you troubleshoot and rule out those problems.

Last edited by tommcd; 10-16-2011 at 10:10 AM.
 
Old 10-17-2011, 01:00 AM   #7
Fintan69
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Whatever works. I meant ctrl+alt+esc not ctrl + al + enter.
 
  


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