> From: Neil Bothwick <n...@digimed.co.uk>

>On Fri, 20 Jan 2012 19:57:31 -0800 (PST), BRM wrote:
>> As the system starts to boot-up, it switches like it is going to start
>> X - changing a video mode somehow. I don't have xdm in the runlevels
>> yet, so it can't be starting XDM at all.This seems to happen right
>> after udevd is started, while it waiting on the udev events. The system
>> then just shuts off (power remain on - fans are still on, but monitors
>> are off,  and nothing responds, etc.) , and it never completes boot-up.
>
>Do you have another computer you can use to test if it is alive with ping
>or SSH? This is occurring around the point at which KMS kicks in, you may
>be just losing your display but still have an otherwise working system.


Yes SSH is enabled; no I can't SSH into it. It seems to be completely dead.

>Try adding nomodeset (or intel.modeset=0) to your kernel boot parameters
>to disable KMS.


Ok. Setting "nomodeset" works. However, if I understand the nouveau driver 
correctly then that won't work for using the nouveau driver as it requires KMS.

Digging a little deeper into the nouveau driver and KMS[1], I discovered that I 
probably need to have CONFIG_VT_HW_CONSOLE_BINDING set in the kernel config as 
well - which it wasn't. So that probably explains what was happening as 
CONFIG_HW_CONSOLE was set, so there may have been two drivers competing for fb0.

Now off to build a new kernel...

Thanks,

Ben


[1]http://nouveau.freedesktop.org/wiki/KernelModeSetting


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