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Chocrates
n00b
Joined: 28 Apr 2007
Posts: 27
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 Posted: Sat Feb 02, 2013 10:29 am Post subject: Is the ring buffer saved? - Kernel Panic on startup |
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I turned off, unplugged, and stepped away from my gentoo distro for a month. Now that I am back I'm getting a kernel panic (I assume) when either fluxbox or the loging manager loads.
As far as I know absolutely nothing has changed, and I didn't install anything fresh on it without restarting before I left.
I do not know that it's a kernel panic, but the resolution gets really big and drops to the ring buffer output, such that i cannot see the last entry. Additionally ALT + F[1-12] does not change the tty. This is consistent with the kernel panics I have gotten with improper kernel configurations in the past.
Is the ring buffer saved to a file, or can I configure it to be saved with a live system so that I can start debugging this? |
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toralf
Developer
Joined: 01 Feb 2004
Posts: 3922
Location: Hamburg
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| Posted: Sat Feb 02, 2013 10:36 am Post subject: Re: Is the ring buffer saved? - Kernel Panic on startup |
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| Chocrates wrote: | | As far as I know absolutely nothing has changed |
Well - the year has changed :-)And furthermore a monthly scheduled cron job would now run. |
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Chocrates
n00b
Joined: 28 Apr 2007
Posts: 27
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| Posted: Sat Feb 02, 2013 11:03 am Post subject: Re: Is the ring buffer saved? - Kernel Panic on startup |
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| toralf wrote: | | Well - the year has changed :-)And furthermore a monthly scheduled cron job would now run. |
Haha, good call, but I left January 7th  , so I was exaggerating a bit.
I will check cron though, thanks. |
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Chocrates
n00b
Joined: 28 Apr 2007
Posts: 27
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| Posted: Sat Feb 02, 2013 2:27 pm Post subject: Re: Is the ring buffer saved? - Kernel Panic on startup |
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| toralf wrote: | | Well - the year has changed :-)And furthermore a monthly scheduled cron job would now run. |
Alas /etc/crontab has no monthly jobs.
In better news, apparently kernel loggers are what i was looking for! To be honest even after using linux for 5 years, the gentoo install was still a bit magick.
The kernel buffer output is in /var/log/messages
I'll update with root cause and how to fix it when i find it.
Thanks! |
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Chocrates
n00b
Joined: 28 Apr 2007
Posts: 27
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| Posted: Sat Feb 09, 2013 4:35 am Post subject: |
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Root cause is still unknown, but i fixed it by booting with a live cd and updating my entire tree with
| Code: | | emerge --update --deep --with-bdeps=y --newuse world |
which inadvertently had me configure and boot a new kernel.
After i switched to the open source drivers startx ran fine. Slim might be broken still but it boots to a desktop! |
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