[systemd-devel] Alienware graphics amplifier scancodes

[Mario Limonciello]

On 05/29/2015 04:22 AM, Lennart Poettering wrote:
> On Thu, 28.05.15 13:53, Mario Limonciello (mario_limonciello at dell.com) 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.
>>
>> 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..
> gdm has multi seat support btw: it will spawn X servers on all seats
> capable of graphics. if you unplug all graphics cards than this simply
> means that your number of graphics-capable seats went from > 0 to
> 0. That's all. And if you plug in a graphics card then, then it goes
> from 0 to 1 again and you get a fresh new login prompt on it.
>
> Lennart
>
Lennart,

The kernel bits and discussion around hot unplug aside, can you please 
add support to systemd to map the scan codes?  For the other scenarios 
such as the cable being connected and the disconnect button being 
pressed userspace will need to provide a notification to the user what 
to do next.  I've added the details (and a proposed patch) to bug 
90689.  If these are also controversial, I'd like to know what else you 
have in mind.

Thanks,