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nss
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PostPosted: Mon Jan 23, 2006 6:54 pm    Post subject: computer is mostly frozen Reply with quote

After installing octave on my powerbook, my computer is mostly frozen. The mouse moves around but does not respond to any clicks. I am unabe to su to root from the terminal window (for a shutdown attempt). I tried going to the other virtual terminals to login as root but because of my /etc/securetty settings, I am not permitted. I tried logging in with my regular username from one of these virtual terminals (accessed by hitting ctrl+alt+fx, I think they are called tty's, forgive me if any of my terminology is off). After entering my password, that screen locks up, not even returning a login prompt. It just hangs as if it is checking my password. From my gui environment, I hit ctrl+alt+delete, that left a black screen with the words shutdown now, but that's it. I also tried hitting my power button to try and put the machine to rest. I only have about three more terminals to attempt a login from. I am really trying to avoid hard stopping the machine by forcing a shutdown. Does anyone know some other ways to try and get out of this mess?
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JoseJX
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PostPosted: Mon Jan 23, 2006 6:58 pm    Post subject: Reply with quote

Just reset it and then check your logs, the only thing I can think of that might cause this behaviour is a kernel panic (perhaps IDE related?)
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nss
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PostPosted: Mon Jan 23, 2006 7:01 pm    Post subject: Reply with quote

I am kind of paranoid about filesystem corruption and fragmentation. I am using reiserfs. Forcing my computer to shutdown seems like I am damaging my hard drive and/or filesystem integrity. How serious is this?
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JoseJX
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PostPosted: Mon Jan 23, 2006 7:12 pm    Post subject: Reply with quote

It's what fsck.reiserfs is for.

I'd just reboot and hope for the best, most likely there won't be any problem.
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fb
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PostPosted: Mon Jan 23, 2006 11:56 pm    Post subject: Reply with quote

You wouldn't have some partition mounted over the network by any chance?
I add one user once, having strikingly similar problems. It turns out his
home directory was NFS mounted and the NFS server shutdown while he
was logged in. Couldn't figure out what was wrong before the reboot, which
I had to finish by cutting power because (as I found afterward) it couldn't
unmount the network partition.
So too me it looks like the partition with your home directory has gone to
lunch and you won't be able to log in or shutdown nicely.
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nss
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PostPosted: Tue Jan 24, 2006 12:11 am    Post subject: Reply with quote

nfs starts automatically on boot, but I did not have any external (to my laptop) partitions mounted.
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PostPosted: Tue Jan 24, 2006 12:55 am    Post subject: Reply with quote

bobotoes wrote:
nfs starts automatically on boot, but I did not have any external (to my laptop) partitions mounted.

In that particular case it was a NFS partition, but if a local home partition becomes unavailable
for whatever reason I would expect the same results.
I think you are potentially already in trouble with your disk. Of course JoseJX
could be right, and he knows more than me, and it could be a kernel panic,
pulling the plug may domage your disk, there is always a small risk depending
on what is going on in your computer at the time. Usually pulling the plug on
the kdm login screen while no jobs (cron or otherwise) is going on is "safe" for
example.
The problem is you currently do not have any means to check what's wrong,
and no mean to fix it, so you better reboot and have a live cd in hand just in case.
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