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Pedroski 02-20-2012 11:05 PM

kernel-debug
 
I have a bug, which I reported to Redhat bugzilla. Everytime I unplug the dsl cable, my laptop crashes.

https://bugzilla.redhat.com/show_bug.cgi?id=781217

They said I might try to run the kernel-debug package. I don't know what that is or how to run it.

Any tips out there?

unSpawn 02-21-2012 06:33 PM

Thanks for reporting a bug. Run 'yum install kernel-debug' to install the debug version for your current kernel.

Pedroski 02-21-2012 07:14 PM

Thanks!

Will that cure this? Or what should I do? I really don't know what I should do with kernel-debug. Read the man page?

F 16 is the worst version of Fedora I ever installed! I never had so many crashes!

syg00 02-21-2012 08:18 PM

Installing the package provides kernel, config, initramfs. I only install it for debug (dump) purposes, but presumably it also creates the entry in the boot menu (never really looked ...). Simply boot it.

I would be surprised if it helped, but ya gotta try ...

unSpawn 02-21-2012 11:55 PM

Quote:

Originally Posted by Pedroski (Post 4608740)
Will that cure this? (..) I really don't know what I should do with kernel-debug.

No, it will not cure this. If you 'yum info kernel-debug' it displays the purpose of the package in short. As posted in the ticket they want the 'dmesg' output to begin with.


Quote:

Originally Posted by Pedroski (Post 4608740)
F 16 is the worst version of Fedora I ever installed! I never had so many crashes!

What kind of crashes? The reasons are important to know.

Pedroski 02-22-2012 06:27 AM

unplug the dsl cable, laptop crashes, or rather, freezes, only the power button can switch it off.

use an overhead projector, laptop won't switch off, screen stays alight.

I have posted what they asked for in bugzilla, but I am none the wiser, and the bug goes on! I have updated almost every day, hoping it would go away! This affects the laptop such that, the only way to get Fedora, or Ubuntu to boot after a crash, is to start Windows. Windows must do a basic reset of the hardware I presume. Then reboot and Linux works! This is a case of Windows saves Linux! I never use Windows, but I left it on the laptop just in case. Good thing I did!

unSpawn 02-22-2012 06:01 PM

Quote:

Originally Posted by Pedroski (Post 4609121)
I have posted what they asked for in bugzilla

No, you have not posted the 'dmesg' output running the debug kernel. That is what they asked for.

Pedroski 02-22-2012 06:15 PM

Ok, that wasn't clear to me.

Neither is 'we need to see the backtrace when it crashes.' What do they want?

unSpawn 02-22-2012 06:27 PM

Quote:

Originally Posted by Pedroski (Post 4609638)
Ok, that wasn't clear to me.

Neither is 'we need to see the backtrace when it crashes.' What do they want?

See http://www.64k-tec.de/2010/10/gettin...-kernel-panic/ the "Post the panic" part for what a kernel panic will looks like. They'd like that output. (Also see http://www.mulix.org/lectures/kernel...el_oopsing.pdf for an example of what a kernel OOPS might involve but don't let yourself be intimidated by that as it's just an example.) If it's not a kernel issue they'll want you to move to the application level but let's not get ahead of things.

Pedroski 02-22-2012 07:02 PM

Thanks, I'll get the debug kernel running later today, then unplug the dsl cable, then post the dmesg again.


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