[Intel-gfx] X not starting - Output VGA disconnected message on DH55HC VGA output

[Emmanuel]

Mark Knecht a écrit :
> On Sun, Jan 24, 2010 at 5:46 AM, Emmanuel <eallaud at gmail.com> wrote:
>   
>> Mark Knecht a écrit :
>>     
>>> On Sat, Jan 23, 2010 at 6:46 PM, Jin, Gordon <gordon.jin at intel.com> wrote:
>>>
>>>       
>>>> Mark Knecht wrote on Sunday, January 24, 2010 7:54 AM:
>>>>
>>>>         
>>>>> Hi,
>>>>>    First post here. Thanks in advance.
>>>>>
>>>>>    I purchased an Intel DH55HC motherboard with a Core i5-661
>>>>> processor a couple of days ago and am attempting to bring up X at this
>>>>> time. The machine is functional, running Gentoo 64-bit, and seems
>>>>> quite fast. The only monitors I own are standard old-style VGA so I'm
>>>>> attaching to the old-style analog VGA connector on the motherboard. I
>>>>> have no PCI or PCI-X graphics adapters in the machine. My problem
>>>>> seems to be that xorg-server is not recognizing that the VGA is
>>>>> actually hooked up:
>>>>>
>>>>> (II) intel(0): Output VGA using monitor section Monitor0
>>>>> (II) intel(0): Output VGA disconnected
>>>>> (WW) intel(0): No outputs definitely connected, trying again...
>>>>> (II) intel(0): Output VGA disconnected
>>>>> (WW) intel(0): Unable to find initial modes
>>>>> (EE) intel(0): No valid modes.
>>>>> (II) UnloadModule: "intel"
>>>>> (II) UnloadModule: "vgahw"
>>>>> (II) Unloading /usr/lib64/xorg/modules//libvgahw.so
>>>>> (EE) Screen(s) found, but none have a usable configuration.
>>>>>
>>>>>           
>>>> What's the xf86-video-intel version? 2.9.0 is required.
>>>> This new processor is only supported in kernel mode setting. Can you try enabling CONFIG_DRM_I915_KMS or boot option i915.modeset=1? That will report VGA1 instead of VGA in the log (as shown above).
>>>>
>>>> If that still doesn't work, please file a bug referring to http://www.intellinuxgraphics.org/how_to_report_bug.html. We are definitely interested in report against this new processor.
>>>>
>>>> Thanks
>>>> Gordon
>>>>
>>>>
>>>>
>>>>         
>>> Hi Gordon,
>>>    Thanks for the response. I'm very happy to work with you on bug
>>> reports and all. I'd first like to make sure I'm not doing something
>>> stupid though so as not to waste too much time.
>>>
>>>    I tried enabling the KMS option, but I see the overall DRM is
>>> modular. Is that a problem? I wasn't expecting what happened. The
>>> machine is up and running but my screen went black at boot time.
>>>
>>>       
> <SNIP>
>   
>> There was a bug in Ubuntu 9.10 with KMS not detecting that VGA was
>> connected and then was unable to find a "initial mode". I guess that if
>> you disable KMS it works right?
>> But normally a fix has been commited sometimes ago, but I dont know if
>> gentoo has it though. It looks like Ubuntu still does not have it.
>> Ubuntu Bug is # 467841 (there you can find the upstream commit msg).
>> HTH
>> Bye
>> Manu
>>     
>
> Hi Manu,
>    Thanks for responding. Yes, it does seem like a similar bug. Your
> bug report was helpful as it allows me to load the KMS driver but with
> i915.modeset=0 on the command line at least my screen doesn't go
> black. I can log in and try starting X but it still fails the same
> way. Without the i915.modeset=0 the screen goes black right as the
> boot starts processing udev stuff.
>
>   
Well you can try the vesa driver to see if X works. This would rule out 
any weird hardware problem.
And if you feel brave enough you can apply the patch (I assume you know 
how to do that as a Gentoo-er ;-)
Bye
Manu