pc locks up when trying to shut down

[Mikkel Erup]

If I try to shut down or reboot when I'm using kdm my laptop (IBM X40) freezez at a black screen. Using gdm it doesn't happen. Odly increasing debug output makes it not freeze but spams the log instead.
This is what the log says without debug output:
kdm_greet[2786]: Internal error: memory corruption detected

[Rocco Stanzione (trappist)]

Same happens to me on a Dell Inspiron 600m. It also happens if I ctrl-alt-backspace or /etc/init.d/kdm stop|restart. I'm not certain, but I think it began when I upgraded to kde 3.5.2.

[mon (javiermon-deactivatedaccount)]

What version of kubuntu are you using?

[Mikkel Erup (mikkel-erup)]

This is Dapper, kdm-3.5.2-0ubuntu5. It happened in 3.5.2-0ubuntu2, 3 and 4.

Mikkel

[Mikkel Erup (mikkel-erup)]

I meant to say it also happened in those versions ...

[Rocco Stanzione (trappist)]

Same here on the versions. It didn't happen on breezy + 3.5.2.

[Rocco Stanzione (trappist)]

It might be relevant that I'm running dual-head with the fglrx drivers from linux-restricted-modules. Nothing interesting in the syslog.

[Mikkel Erup (mikkel-erup)]

Rocco Stanzione wrote:
> It might be relevant that I'm running dual-head with the fglrx drivers from linux-restricted-modules. Nothing interesting in the syslog.
>
Interesting, but I doubt it's caused by that. My graphics is Intel
Extreme 855GM onboard.

[Mikkel Erup (mikkel-erup)]

It still happens in 3.5.2-0ubuntu6.
syslog says "Apr 13 22:18:06 freja kdm_greet[9669]: Internal error: memory corruption detected"

[Mikkel Erup (mikkel-erup)]

And in kdm-3.5.2-0ubuntu7

[Mikkel Erup (mikkel-erup)]

The problem continues to persist in kdm-3.5.2-0ubuntu8.

[Rocco Stanzione (trappist)]

This may be a duplicate of #30447, or vice versa.

[Mikkel Erup (mikkel-erup)]

Well on my computer sudo /etc/init.d/kdm restart works fine. Rebooting or shutting down also works fine from the login menu. It only freezes if I try rebooting or shutting down from within the kde session.

[Paulo Tanimoto (tanimoto)]

[quote]
Well on my computer sudo /etc/init.d/kdm restart works fine. Rebooting or shutting down also works fine from the login menu. It only freezes if I try rebooting or shutting down from within the kde session.
[/quote]

That's exactly the behavior for me as well. I've been having this issue since a few Flights ago. I've been installing Kubuntu from scratch to see if it gets fixed. What I have noticed is that in the first couple of times I use the system (even with fglrx), it behaves properly. After that, this starts to happen. Either the system becomes unusable or everything happens in a blank screen.

I'd be happy to post more information if you tell me what is necessary.

[Paulo Tanimoto (tanimoto)]

By the way, there's another thing that is probably related is this. When I click Restart or Shutdown nothing happens. Then I have to go to the Menu again and repeat the process. Only then I get the blank screen.

[Laurent Bonnaud (laurent-bonnaud)]

I am still seeing this bug every day in edgy on an Acer 8204 WLMI:

/var/log/syslog.4.gz:Nov 4 20:35:14 localhost kdm_greet[4852]: Internal error: memory corruption detected
/var/log/syslog.5.gz:Nov 3 11:03:33 localhost kdm_greet[4847]: Internal error: memory corruption detected
/var/log/syslog.6.gz:Nov 1 22:04:44 localhost kdm_greet[5227]: Internal error: memory corruption detected
/var/log/syslog.6.gz:Nov 2 12:53:06 localhost kdm_greet[4862]: Internal error: memory corruption detected

[Brian Ealdwine (eode)]

..I have the same entries in my logs.. Memory corruption detected.

Is it possible to up the importance of this bug? This causes my filesystem (reiserfs) to become out of whack, which prevents me from booting. I then have to boot into recovery mode, which somehow works, and mounts the filesystem, replaying the journal, etc. Then I can boot up normally.

[Reuben Firmin (reubenf)]

I am seeing this (or something very close to it) on Feisty, except the problem seems to be intermittent. I click shutdown from within KDE, all x applications exit, but the PC locks up somewhere between that and the kubuntu splash coming up.

[Daugirdas (daugirdas)]

The bug also affects the up-to date 7.04 installation on ~AMD 1Ghz machine with latest kde/kdm. The shut down, however is smooth from the KDM screen. Please fix.

[Reuben Firmin (reubenf)]

I've started seeing a "red screen of death" on my laptop when shutting down, sometimes. The screen is completely red, and the machine is locked.

Other times, I get a screen dump with the last output being NetworkManager shutdown errors, and nothing following.

I have the corruption messages (as above), but I'm not convinced that they're associated with the lockup.

[Jonathan Thomas (echidnaman)]

Does this still happen with Intrepid (or KDE4?)

[Harald Sitter (apachelogger)]

Bug will be closed on 2008-10-09 if it didn't receive a reply by then.

[Harald Sitter (apachelogger)]

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!