Arch Linux

declan.marks

Member

Registered: 2016-05-13

Posts: 25

DisplayPort not working.

I have bought a second display which has HDMI, DisplayPort. My old monitor had HDMI and dvi-d. My motherboard only has 1 HDMI, dvi-d and DisplayPort. The DisplayPort cable that I have bought is either 1.3 or 1.4

I used HDMI for my old monitor and it works. When I connect the second display using DisplayPort it doesn't work. The system doesn't detect the monitor.

My system is using integrated graphics on intel core i5 4690k. My desktop environment is KDE 5.9

Last edited by declan.marks (2017-04-04 09:43:31)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,789

Re: DisplayPort not working.

The system doesn't detect the monitor.

How did you establish that?  Using the tools provided by KDE?
What is the output of xrandr   ?
Was the monitor on and connected when you booted?
If it is detected by xrandr does it appear and disappear when you connect / disconnect the cable?

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R00KIE

Forum Fellow

From: Between a computer and a chair

Registered: 2008-09-14

Posts: 4,734

Re: DisplayPort not working.

What's the output of 'xrandr -q --verbose'?

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declan.marks

Member

Registered: 2016-05-13

Posts: 25

Re: DisplayPort not working.

This is the output of xrandr

$ xrandr -q --verbose
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
DP1 disconnected (normal left inverted right x axis y axis)
    Identifier: 0x43
    Timestamp:  67740563
    Subpixel:   unknown
    Clones:     HDMI3
    CRTCs:      0 1 2
    Transform:  1.000000 0.000000 0.000000
                0.000000 1.000000 0.000000
                0.000000 0.000000 1.000000
               filter:
    Broadcast RGB: Automatic
        supported: Automatic, Full, Limited 16:235
    audio: auto
        supported: force-dvi, off, auto, on

There are lots of other HDMI, but the output is too long.

Last edited by declan.marks (2017-04-04 17:47:43)

R00KIE

Forum Fellow

From: Between a computer and a chair

Registered: 2008-09-14

Posts: 4,734

Re: DisplayPort not working.

You haven't answered ewaller's questions and you have deliberately truncated what I have asked for, which would contain information needed for people to try to help you.

If you want help you need to answer the questions asked by the people trying to help you. Don't forget to use code tags when posting the output of commands[1].

[1] https://wiki.archlinux.org/index.php/Co … s_and_code

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