Arch Linux

blindevil

Member

Registered: 2011-09-01

Posts: 17

Mini displayport

Hi guys, I installed arch linux on a dell xps 14z. I installed bumblebee to switch from one card to other, but when I try to enable an external monitor through the mini display port nothing happens. If I do lspci command this is the result:

$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: nVidia Corporation Device 1050 (rev ff)

This is the output of xrandr:

$ xrandr 
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 309mm x 174mm
   1366x768       60.0*+   40.0  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)

I found some guides to enable programs on an external monitor but I want to have double monitors and not only some programs.
Can you help me?
Thanks

.:B:.

Forum Fellow

Registered: 2006-11-26

Posts: 5,819

Website

Re: Mini displayport

What card is the DisplayPort port connected to, or should it work on both? Xrandr definitely isn't seeing it, that's for sure...

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blindevil

Member

Registered: 2011-09-01

Posts: 17

Re: Mini displayport

What card is the DisplayPort port connected to, or should it work on both? Xrandr definitely isn't seeing it, that's for sure...

How can I check this?

alessiofachechi

Member

Registered: 2008-08-28

Posts: 9

Re: Mini displayport

Did anyone find some solution to this problem?

Teaspoon

Member

Registered: 2012-08-29

Posts: 20

Re: Mini displayport

I read this article about some laptops having at least some of their sockets attached to the nvidia card and needing their optimus implementation to be run backwards to gain access to them. Could be relevant.

Actually, in your output above, xrandr is showing a "DP1" so it is seeing a DisplayPort socket but not seeing anything connected to it. It's my experience that DisplayPort monitors appear to be disconnected if they are powered off or even set to a different input, so that's worth checking. I vaguely recall that the NVidia control panel in Windows will give information on which sockets are attached to which video device, so if you can do a dual-boot thing and get into Windows you might get some useful information (and it ought to just work there because that's where NVidia's implemented Optimus).