[Solved] Second Monitor not Detected

CaptainKirk · 2018-06-17 16:13:31

I have two matching monitors plugged in, one to the VGA and the other to the HDMI right next to it. Here is what I see:

xrandr:

Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
DP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 510mm x 290mm
   1920x1080     60.00*+
   1680x1050     59.95  
   1280x1024     75.02    60.02  
   1152x864      75.00  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   640x480       75.00    59.94  
   720x400       70.08  
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

The second monitor is not detected at all. I am uncertain if I should try to make my own Xorg config file to fix this, or perhaps switch to the nvidia driver. Here are the other relevant outputs:

cat /var/log/Xorg.0.log = https://pastebin.com/1RLHfPJ3
dmesg = https://pastebin.com/WqwPm35T
lspci | grep VGA =

00:02.0 VGA compatible controller: Intel Corporation HD Graphics 630 (rev 04)

Here's the whole lspci -v output: https://pastebin.com/PcGit5uz

Any advice how to proceed is appreciated.

Last edited by CaptainKirk (2018-06-18 11:41:02)

ewaller · 2018-06-17 16:27:14

I gather then that it is the HDMI monitor that is not working. Is that monitor configured to look for video from HDMI (Is that input selected)? I have seen some monitors that do not identify themselves over the HDMI unless they are on that input.

From whence did the nvidia driver concept arise? Unless I am suffering from a lack of coffee this morning, the only GPU I say in your system is Intel.

CaptainKirk · 2018-06-17 16:35:47

ewaller wrote:

I gather then that it is the HDMI monitor that is not working. Is that monitor configured to look for video from HDMI (Is that input selected)? I have seen some monitors that do not identify themselves over the HDMI unless they are on that input.

I have two LG Flatron IPS231 monitors that come with only VGA inputs. On my other PC I had a little white DVI adaptor and it worked fine, albeit on a video card, not the mobo video outputs (don't recall why I did that). This PC is brand new and it has a newer version of DVI so I bought a new little white adaptor, you know, like this: https://m.media-amazon.com/images/S/apl … feabf7.jpg

Do you think that adaptor is the problem? Or perhaps I need to use a HDMI adaptor instead? The mobo has, as you probably know, all three of those video outputs.

ewaller wrote:

From whence did the nvidia driver concept arise? Unless I am suffering from a lack of coffee this morning, the only GPU I say in your system is Intel.

My mistake I guess. I just know that on my other PC, nouveau gave me headaches so I used nvidia. I thought maybe it would work here too.

loqs · 2018-06-17 16:48:26

It is possible the DVI output does not supply an analogue signal.

ewaller · 2018-06-17 16:51:20

Does system have two DisplayPortsDVI? Or a VGA and a DisplayPortDVI?

I ask because your xrandr output shows a DisplayportDVI and two HDMIs. It does not show a VGA.

The monitor that works, it is using one of these converters?
The monitor that does not work, is it too using one of these converters?

Last edited by ewaller (2018-06-17 17:18:55)

CaptainKirk · 2018-06-17 16:56:49

I do believe that this is my Mobo: https://www.amazon.co.uk/h110-m-r-H110- … B01IC2XYSM

The image matches what I see, which is one VGA (old fashioned blue plug) and next to it a DVI and below them a new-fangled HDMI.

The monitor that works is using just VGA, as I bought these monitors a few years ago and that's what they came with then. To be really clear, I am talking about a plug like this: https://images-na.ssl-images-amazon.com … SY355_.jpg

loqs · 2018-06-17 16:59:34

http://dlcdnet.asus.com/pub/ASUS/mb/LGA … V2_WEB.pdf see page 1-6

10.
DVI-D port.
This port is for any DVI-D compatible device.
DVI-D can not be converted to output from RGB Signal to CRT and is not compatible with
DVI-I.

ewaller · 2018-06-17 17:23:44

It sounds like they split the VGA out of the DVI and made the DVI into a digital-only while bringing the VGA out to a dedicated connector; That is why there is no separate VGA in the randr output. And there is no VGA in the DVI connector. Note that your converter is nothing more than a pass-through for analog signals; it does not do a conversion of the digital data to analog. I think you are going to need a converter similar to this
https://www.bestbuy.com/site/insignia-h … =212&loc=1

Last edited by ewaller (2018-06-17 17:25:21)

CaptainKirk · 2018-06-17 19:09:59

Yes, based on loqs's response also, I was going to ask if I should get one of those. OK, thank you all so much. I will get one tomorrow and try again.

CaptainKirk · 2018-06-18 11:41:38

That adaptor did it:

$ xrandr
Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 32767 x 32767
DP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 510mm x 290mm
   1920x1080     60.00*+
   1680x1050     59.95  
   1280x1024     75.02    60.02  
   1152x864      75.00  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   640x480       75.00    59.94  
   720x400       70.08  
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 510mm x 290mm
   1920x1080     60.00*+  60.00    59.94  
   1680x1050     59.88  
   1280x1024     75.02    60.02  
   1152x864      75.00  
   1280x720      60.00    59.94  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x480       60.00    59.94  
   640x480       75.00    60.00    59.94  
   720x400       70.08  
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

Thank you.

Arch Linux

#1 2018-06-17 16:13:31

[Solved] Second Monitor not Detected

#2 2018-06-17 16:27:14

Re: [Solved] Second Monitor not Detected

#3 2018-06-17 16:35:47

Re: [Solved] Second Monitor not Detected

#4 2018-06-17 16:48:26

Re: [Solved] Second Monitor not Detected

#5 2018-06-17 16:51:20

Re: [Solved] Second Monitor not Detected

#6 2018-06-17 16:56:49

Re: [Solved] Second Monitor not Detected

#7 2018-06-17 16:59:34

Re: [Solved] Second Monitor not Detected

#8 2018-06-17 17:23:44

Re: [Solved] Second Monitor not Detected

#9 2018-06-17 19:09:59

Re: [Solved] Second Monitor not Detected

#10 2018-06-18 11:41:38

Re: [Solved] Second Monitor not Detected

Board footer