Multiple problems with multiple monitors
Basil Mohamed Gohar
basilgohar at librevideo.org
Tue Oct 14 02:53:56 UTC 2014
On 10/13/2014 05:18 PM, David Airlie wrote:
>> I've searched for bugs related to the specific problems I've been having, and
>> I've not been able to find anything that describes what I'm seeing.
>> I have an HP EliteBook 840 that also comes with an UltraDock, to which I've
>> plugged-in two external monitors and I use in conjunction with the built-in
>> laptop display.
> What Fedora distro are you using?
> Does this laptop have multiple GPUs? what GPU is it etc.
> You probably should file a bug against the primary GPU with the dmesg.
>> Issue #2: When I undock my laptop while logged-in, Gnome Shell just crashes.
>> When I redock after the laptop has been started when unconnected, one of the
>> two external monitors start-up (the one connected by VGA), but not the one
>> connected by a DisplayPort connection. And, recently (but not when I first
>> started using this laptop with the dock, which was about a month ago), now
>> when I start-up with the laptop docked and both external monitors connected,
>> both external monitors will be active, but the built-in display will show
>> nothing. Gnome Shell reports the built-in display is active, but will not
>> display anything unless I deactivate it and reactivate it via the settings
>> "Displays" utility.
> This sounds like MST releated but I can't say without more info.
Thanks, Dave, I was hoping you'd see this. :)
The laptop has two GPUs, one Intel and the other Radeon. I am not sure
how to tell which display is controlled by which device.
It is Fedora 20. I can get you more details when I get back to work
tomorrow. I'm happy to provide whatever information is necessary, but
that is part of the problem, I'm not sure what is useful to help figure
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