Firefox in Ubuntu almost crashed me.

Today, an undo closed tabs button (UNDO closed tabs button) is installed for Firefox 3.6.10 In ubuntu. After clicking "restart Firefox" as prompted, it cannot be started.

Then, I went online to find out how to enable Firefox to start in safe mode, which was not completed for a long time. Next, I want to manually delete the Firefox plug-in, but the level in Linux is too bad to find the directory for saving the plug-in! Then, it took a long time to get involved.

Finally, a netizen said that the "sudo Firefox" command can be used to start his dead Firefox, so I will also use it as a dead Firefox doctor. In the command line, enter:

Sudo Firefox

A 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" is displayed ". Using the system monitor, the Firefox and Firefox bin processes are "sleeping!

After killing the two processes, restart them.Program, Firefox finally ran again.

It seems that the root cause of this crashing journey is that I am preemptible: I think Firefox cannot be started because it is newly installed in the plug-in. All the subsequent solutions are based on this idea. Naturally, it's just like the south, and the distance is far away!