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Old 06-02-2005, 06:23 PM   #1
Registered: Jan 2003
Distribution: Ubuntu 5.04
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Dealing with an app lockup in X <solved>

I've had a few applications completly lockup on me (like ZSNES) to the point where Ctrl-Alt-Del wouldn't even work (which is what I would do in Windows). What's the best way to deal with an application lockup in X? I know you can use ctrl-alt-backspace, but I've heard that isn't the most graceful way to shutdown X.

Edit://I know this may seem like basic stuff to most linux users, but switching to a virtual console from X using ctrl-alt-fN (where N is a number representing one of the seven virtual consoles) seems to do the trick.

Last edited by Comreak; 06-04-2005 at 12:17 AM.
Old 06-03-2005, 11:03 AM   #2
Registered: Dec 2003
Location: Houston
Distribution: Windows Vista/ XP/ Mepis
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you could use the commands:
#ps -aux
to list the processes running on your comp
find the offending jobs pid
#kill <pid> -9
Old 06-03-2005, 04:46 PM   #3
Registered: Jan 2003
Distribution: Ubuntu 5.04
Posts: 32

Original Poster
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I should have been more specific. I was more or less referring to full screen applications that completely lock up. Killing the process seems like a good idea but what if you can't get access to a console? I've had this happen with various applications and I couldn't do more than reboot the computer.
Old 06-03-2005, 08:23 PM   #4
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what if you can't get access to a console?
Hmmm! I think I'd hate being forced to admit to my Windows friends that such a thing could happen. Maybe you should check out your desktop's built-in Keyboard Shortcuts, or change the properties of your panel to Autohide / Always on Top ... or do something. Rebooting to escape a locked up app seems very un-Linux-ish.
Old 06-04-2005, 07:54 AM   #5
Registered: Dec 2003
Location: Houston
Distribution: Windows Vista/ XP/ Mepis
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ctrl-alt-<Function key(F1,F2, etc)> should get you to single user mode where you can sign in as root and perform the operations. You can then use the commands init 5 or startx to restart your user environment.
Old 06-05-2005, 02:44 AM   #6
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If you use KDE and some other window managers, there is usually a link in the menu to the "xkill" program which kills any application with the click of a mouse.
Old 06-05-2005, 07:17 AM   #7
Registered: Feb 2004
Location: Linuxland
Distribution: Ubuntu 5.10, KUbuntu 5.10, Mandrake 10.1 - Ubuntu 5.04 (Hoary)
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1) You can use an application called "xkill" and kill the application via the GUI.
2) You can terminate it through console. Type "killall (process)"
Old 06-05-2005, 09:07 AM   #8
Registered: Dec 2004
Distribution: redhat linux
Posts: 88

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maybe xkill be a convenient way to terminate apps via GUI, just running the command first then make a choice which program you want to end and move the cursor on.


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