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Ctrl - Alt - Fn shortcut causes kernel panic
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meetshawn
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Joined: 12 Feb 2014
Posts: 2

PostPosted: Wed Feb 12, 2014 8:27 pm    Post subject: Ctrl - Alt - Fn shortcut causes kernel panic Reply with quote

If I try to switch terminals using the keyboard shortcut Ctrl Alt Fn (any Fn) I get a kernel panic. It switches terminals and briefly shows a login prompt for less than half a second then panics.

Using chvt works just fine from tty and x to other terminals, back to x, etc.

I have no other keyboard issues and all other shortcuts work just fine.

I'm really clueless here...

pic of the panic: https://db.tt/ofzBc3Ut
sorry if its fuzzy, my camera is terrible...


Last edited by meetshawn on Wed Feb 12, 2014 9:16 pm; edited 2 times in total
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N8Fear
Tux's lil' helper
Tux's lil' helper


Joined: 15 Apr 2013
Posts: 128
Location: Berlin (Germany)

PostPosted: Wed Feb 12, 2014 9:05 pm    Post subject: Reply with quote

Without more information I can only give the advice to try to rebuild a kernel (from scratch, e.g. a new config) and try that. If that doesn't help of seems like too much help try to get the actual error (either a core dump or a picture of the screen that contains the panic).
If you post that error here maybe someone is able to get an idea what fails. The better way would most likely be to open a bug against the kernel (upstream that is) and follow the debugging instructions you'll most likely get.
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meetshawn
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Joined: 12 Feb 2014
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PostPosted: Wed Feb 12, 2014 9:15 pm    Post subject: Reply with quote

N8Fear wrote:
Without more information I can only give the advice to try to rebuild a kernel (from scratch, e.g. a new config) and try that. If that doesn't help of seems like too much help try to get the actual error (either a core dump or a picture of the screen that contains the panic).
If you post that error here maybe someone is able to get an idea what fails. The better way would most likely be to open a bug against the kernel (upstream that is) and follow the debugging instructions you'll most likely get.


my bad, i took a picture and forgot to upload it. i updated my original post with the pic.
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Juippisi
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Joined: 30 Sep 2005
Posts: 43
Location: /home

PostPosted: Wed Feb 12, 2014 11:12 pm    Post subject: Reply with quote

Just a guess, some kind of framebuffer doing that?

Recompile your kernel, and disable FB and KMS. I think you CAN work it out without a kernel change, by modifying your grub.cfg but I'd just take the crap off from kernel.
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Hu
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Joined: 06 Mar 2007
Posts: 9125

PostPosted: Thu Feb 13, 2014 2:34 am    Post subject: Reply with quote

If he uses the open drivers, then disabling KMS may disable his ability to run X. If he is using the closed drivers, he should try using the open drivers to see if they also manifest a problem.
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