Won't reboot 9 out of 10 times...

[muzicman0]

90% of the time, a reboot or restart hangs before a complete shutdown on 9.04...any ideas on what to try?

mm0

[Rog131]

Do you get error messages ?


Something to try: Take the splash (usplash) off

1) Backup your /boot/grub/menu.lst
2) Edit your /boot/grub/menu.lst

Alt+F2 and kdesudo kate /boot/grub/menu.lst

There should be something like:

title Ubuntu jaunty (development branch), kernel 2.6.28-9-generic
uuid 63f41b2a-9ea8-449a-b723-e5233ac92896
kernel /boot/vmlinuz-2.6.28-9-generic root=UUID=63f41b2a-9ea8-449a-b723-e5233ac92896 ro quiet splash
initrd /boot/initrd.img-2.6.28-9-generic

remove "splash" from the kernel line. Save and exit kate.

After this Kubuntu should start and shutdown without splashscreens and you should see the warnings and errors.


A possible workaround: use an external shutdown utility. I have been using kshutdown, it is in the repositories.

Package: kshutdown

an advanced shut down utility for KDE

It has 4 main commands:

- Shut Down (logout and halt the system),
- Reboot (logout and reboot the system),
- Lock Screen (lock the screen using a screen saver),
- Logout (end the session and logout the user).

It features time and delay options, command line support, wizard, and sounds.

> KShutdown (http://kshutdown.sourceforge.net/) home
> KShutdown (http://www.kde-apps.org/content/show.php/KShutdown?content=9754) kde-apps

[muzicman0]

OK, so I disables the splash...

It is failing to kill all remaining processes, and the last thing I see before it halts is Mount: / is busy

Anything else I can try to isolate the problem?

mm0

[flarson]

That is an interesting line "/ is busy". The init system should get through that eventually but depending on what the problem is it might take a while. Do you have some disks mounted via smbfs? This looks like there is a mount that is stopping / from unmounting. This seems to be happening to a lot of people. I wonder if it could be from filesystems that are accessed through dolphin?

[muzicman0]

yes, i do have some samba shares mounted...is there a workaround?

[flarson]

I don't know, but identifying the problem would certainly help. Try manually unmounting the shares and see if it will reliably reboot. If it does we may be able to figure something out.

[utkjamie]

Any luck with this? I have yet to have a successful Jaunty reboot.

[flarson]

I have a laptop that I installed from the Alpha 6 CD which has not been rebooting either, while a desktop installed from a Beta nightly does reboot just fine.

With the laptop it would stop KDM and go to a black screen, blink a cursor a few times and then nothing. At that point CTL-ALT-DEL would cause it to print one line about stopping md devices (software raid, of which I have none) and it would then reboot.

I just now edited /boot/grub/menu.lst and removed quiet and splash from the default options and ran sudo update-grub. Now I see the normal boot messages, but also it shuts down properly, whether I use a GUI or command line.

[flarson]

I have done a little experimenting and digging and have come up with a few things. Although I am sure I don't entirely understand them yet my Sony Vaio (Core2 Duo, 64 bit) now reboots and shuts down reliably.

I first removed the quiet and splash options so I could see what was happening and the first thing I see is a message from iwlagn ( Intel wireless AGN adapter) that it is in deep sleep followed by a register dump and then it stops. But sometimes I get to where I see "Will now reboot" or "Will now halt" which come from thelast scripts to run when entering runlevel 6 or 0 respectively, for reboot or halt.

Looking at that I find that it ends up calling either reboot or halt with a -d option that is not supported in the Kubuntu version of this command. It is also calling it, at least sometimes, with -i (shutdown network interfaces) which linux does anyway. So I removed those option from the reboot script and it worked, but it would still not halt. So I removed those options from the halt script and it works also.

Meanwhile, on my desktop Pentium D, with no wireless, the same scripts work just fine and always has.

[muzicman0]

I ended up going 32 bit install, and it works good now...