[systemd-devel] Alienware graphics amplifier scancodes

[Mario Limonciello]

Hi Greg,

On 05/28/2015 03:30 PM, Greg KH wrote:
> On Thu, May 28, 2015 at 01:53:57PM -0500, Mario Limonciello wrote:
>>
>> On 05/28/2015 01:46 PM, Greg KH wrote:
>>>> You
>>>>> can't guarantee that there is another GPU to display things on.
>>> Yes you can.
>> Wait, what?  No, you can't.
>>
>> 1) Not everyone has multiple monitors plugged into multiple GPU's.
> True.
>
>> 2) The system ships with a dGPU and supports an xGPU.  If you remove the
>> dGPU from the chassis, all you have is the xGPU.  If you unplug xGPU,
>> there's nothing left..
> And how does other operating systems handle this?  Hint, I don't imagine
> they reboot the box...
>
> greg k-h
Sorry for taking so long to respond to this, I had clarified with HW 
marketing the expected experience on Win10 with the graphics amplifier 
on this hardware.
Hot dock and undock is NOT supported.  User must reboot for the internal 
dGPU to be used after a surprise unplug.  If the cable was replugged 
after a surprise unplug there is no expectation that it continues to 
function.

If no other GPUs are on the system (such as dGPU not installed) then the 
system will need to be turned off and back on.