On 03/06/2011 01:58 PM, M A Young wrote:
> On Sun, 6 Mar 2011, Mike Wright wrote:
>
>> Installed myoung's latest f12.xendom0 which boots and runs in f14
>> environment but when set to boot xen.gz with modules vmlinuz and
>> initrmfs system segfaults
>>
>>  From what I can see on bootup (first time I couldn't make a machine go
>> *slow* enough ;) xen.gz boots successfully but fails almost immediately
>> after beginning to load the kernel.
>>
>> Motherboard has no com ports and the bios' default font size is so large
>> that whatever error messages scroll away.
>
> To change the font add vga=ask,keep to the xen line and console=hvc0 to
> the kernel line, then pick a resolution when prompted. You may also need
> to add earlyprintk=xen to the kernel line.
>
> Another thing to try is adding dom0_mem=max:2GB to the xen line as there
> have been problems with letting the Dom0 have too much memory.


OK, Michael!  We're up.  Your suggestions were invaluable in debugging.

Ultimately it came down to BIOS settings.  I kept adjusting them and 
looked for progress.  Towards the end an error regarding Radeon kept 
appearing... but I have no Radeon anything and use the onboard Intel 
video.  When I saw *four* penguins at the top of the screen I knew I had 
a video controller problem.

Apparently there is some sort of Radeon controller on the mobo for use 
with HDMI.  Disabled that.  Took me a little further.  Finally tracked 
it down to a BIOS default to use pci/pcie video adapters before on board 
adapters.  Well, that splains that, Lucy.  There are no other adapters. 
  Change to "use on board video first".

Removed all the extra cmdline args and reset the clock to "auto" (back 
to fast as possible).  It now boots successfully and shows a populated 
/sys/hypervisor.

Ever onward!

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