Restart KDM from a script

[Rob_H]

Hi. I'm trying to write a script that does a few things and then restarts the X server. I've tried (as root):

/etc/init.d/kdm restart

And:

/etc/init.d/kdm stop
/etc/init.d/kdm start

And even:

/etc/init.d/kdm stop
sleep 5
/etc/init.d/kdm start

But each time, KDM does not start back up after stopping. If I log into the console and issue the sudo /etc/init.d/kdm start command from there, it comes up fine, though. Does anyone know why this won't work or if there's a better way? I had a similar problem on openSUSE a while ago and was able to solve it by introducing a pause before starting (i.e. the third snippet above). But the same trick does not work for Kubuntu.

[flarson]

Re: Restart KDM from a script

Without thinking too hard about why it is behaving like that, why not try
/etc/init.d/kdm restart
or
invoke-rc.d kdm restart

[Rob_H]

Re: Restart KDM from a script

Without thinking too hard about why it is behaving like that, why not try
/etc/init.d/kdm restart
or
invoke-rc.d kdm restart

I did try the first one. (See original post.) I get the same result from the second one.

[GreyGeek]

Re: Restart KDM from a script

This may be elementary, but does your scripts have the
#! /bin/bash
as the first line, and did you set their executable permissions on?

[Rob_H]

Re: Restart KDM from a script

This may be elementary, but does your scripts have the
#! /bin/bash
as the first line, and did you set their executable permissions on?

Yes, the script starts fine. And as I said, KDM does shut down. It just doesn't come back up.

[GreyGeek]

Re: Restart KDM from a script

So, root is the owner of the script?
And, you are calling it (or have the code in) from /etc/bash.bashrc or /etc/profile or /etc/rc.local?

Check with man sudo_root for reasons why some commands don't work within the sudo command.

[flarson]

Re: Restart KDM from a script

I think you are starting it from a process that is a child of KDM. As soon as youkill KDM you have no process left to restart KDM. Try it from a VT and it will work.

[Rob_H]

Re: Restart KDM from a script

I think you are starting it from a process that is a child of KDM. As soon as youkill KDM you have no process left to restart KDM. Try it from a VT and it will work.

Bingo! You are right. Worked fine from a VT. Now I need to figure out how to run the script so it's not a child process of KDM, even though I need to invoke it from within KDE. Is there a trick?

[flarson]

Re: Restart KDM from a script

Nothing jumps out at me. I would need to know more about what you are trying to accomplish.

[Rob_H]

[SOLVED] Restart KDM from a script

Actually, I think I've got it. It's not a child process of KDM, but rather a child of the Konsole instance that I was using to test it. If I run the script from KRunner, it works as intended. Thanks for your help.

[Rob_H]

Re: [SOLVED] Restart KDM from a script

Actually, I think I've got it. It's not a child process of KDM, but rather a child of the Konsole instance that I was using to test it. If I run the script from KRunner, it works as intended. Thanks for your help.

More precisely, it was a child of the bash instance.

[flarson]

Re: Restart KDM from a script

Yup. So then you could create a menu button for it also and be able to reliably restart KDM, which the system will not do right now.