Re: Intel Atom detecting a second monitor that doesn't exist.

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On 21.03.2013 19:45, Bill Davidsen wrote:
> Kevin Daly wrote:
>> When booting on an Intel Atom machine I have, xorg reports it detects 2
>> monitors, but I only have one monitor connected.
>>
>> The problem is that the login screen seems to be on the second "Non
>> existent"
>> monitor. So the machine is completely unusable.
>>
>> The motherboard only has one monitor output.
>>
>> This is with the intel i915 driver
>>
> It is probably not directly related to the ATOM, I have an ASUS netbook
> with the 510 CPU using the 915 driver, a firewall box based on micro-ATX
> and another 510, same driver, and neither shows a phantom video device.
> 
> Do you get boot information on the mobo console output? If so you at
> least will be able to edit the boot command line. On small systems like
> laptops and tiny utility boxen I often have to add 'nomodeset' to the
> boot command line, or even remove rhgb to get a boot.
> 
> Clearly you are seeing something as it boots, or you wouldn't see the
> xorg lines (unless you are coming in from another system post boot).
> 
> Any additional info might be useful, I can only say the ATOM doesn't
> have a generic problem with Linux or Fedora. I have one other ATOM box,
> it runs headless, so I don't remember what the console driver was, other
> than 'working.'
> 

Probably related to the nonexistent internal panel - LVDS1.
/boot/grub2/grub.cfg:
linux	/vmlinuz-… video=LVDS-1:d,
eventually i915's param - panel_ignore_lid.

poma


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