[gentoo-user] Unable to catch kernel crash dump

[gentoo-user] Unable to catch kernel crash dump

[Grant]

I've been getting a kernel oops for awhile that is worse than ever in
3.11.1.  It seems to be related to my XHCI USB port.  I followed the
instructions here:

http://wiki.gentoo.org/wiki/Kernel_Crash_Dumps

but /proc/vmcore doesn't exist after I reboot the system after a
crash.  I did notice that I was getting a lot of white text dumped to
the screen against a black background before I followed the
instructions in the wiki, but after following them the screen just
freezes when it crashes.

Does anyone know what I might be doing wrong or how to find out?

- Grant

[gentoo-user] Re: Unable to catch kernel crash dump

[Grant]

> I've been getting a kernel oops for awhile that is worse than ever in
> 3.11.1.  It seems to be related to my XHCI USB port.  I followed the
> instructions here:
>
> http://wiki.gentoo.org/wiki/Kernel_Crash_Dumps
>
> but /proc/vmcore doesn't exist after I reboot the system after a
> crash.  I did notice that I was getting a lot of white text dumped to
> the screen against a black background before I followed the
> instructions in the wiki, but after following them the screen just
> freezes when it crashes.
>
> Does anyone know what I might be doing wrong or how to find out?

I've discovered that the crash kernel should automatically boot after
a crash and that is not happening.  Any idea what could be preventing
it?  Does the following document look up to date and valid?

http://wiki.gentoo.org/wiki/Kernel_Crash_Dumps

- Grant

[gentoo-user] Re: Unable to catch kernel crash dump

[Grant]

>> I've been getting a kernel oops for awhile that is worse than ever in
>> 3.11.1.  It seems to be related to my XHCI USB port.  I followed the
>> instructions here:
>>
>> http://wiki.gentoo.org/wiki/Kernel_Crash_Dumps
>>
>> but /proc/vmcore doesn't exist after I reboot the system after a
>> crash.  I did notice that I was getting a lot of white text dumped to
>> the screen against a black background before I followed the
>> instructions in the wiki, but after following them the screen just
>> freezes when it crashes.
>>
>> Does anyone know what I might be doing wrong or how to find out?
>
> I've discovered that the crash kernel should automatically boot after
> a crash and that is not happening.  Any idea what could be preventing
> it?  Does the following document look up to date and valid?
>
> http://wiki.gentoo.org/wiki/Kernel_Crash_Dumps
>
> - Grant

It turns out the crashkernel itself crashes when I have the Mini
DisplayPort connected.  I've filed a bug:

https://bugzilla.kernel.org/show_bug.cgi?id=62671

- Grant