On 11/21/2010 12:49 PM, Chris Wilson wrote:
> On Sun, 21 Nov 2010 12:20:01 +0100, Vincent Vanackere<vincent.vanackere@gmail.com>  wrote:
>> Hi,
>>
>>   I'm trying to track down a regression occuring in recent kernel : I
>> get the DVI output of my intel G33 chipset through a Sapphire ADD2
>> DVI-D SDVO adaptor card and it was working fine until
>> kernel 2.6.37-rc1 :
>> - all more recent kernels only give a black screen
>> - I can log through ssh and no oops nor anything suspicious is in the log
>> - I get an output if I uses the VGA builtin port.
>
> Add drm.debug=0xe to your boot command line (or module options) and attach
> the dmesg. We're obviously failing to detect the output over the SDVO
> card, and hopefully we might have a reason in the debug log.
> -Chris
>

I attached the dmesg from the latest git kernel (commit 
b86db4744230c94e480de56f1b7f31117edbf193). Do you need the same 
information with a working kernel ?

Vincent