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#1 2019-12-19 16:45:46

bigmac_nopickles
Member
Registered: 2019-11-16
Posts: 25

xrandr not detecting VGA

Hi, i'm trying to setup my second monitor, and i'm having trouble with xrandr

When i  do:

 xrandr 

it returns:

 Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384
DVI-I-0 disconnected primary (normal left inverted right x axis y axis)
DVI-I-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 510mm x 290mm
   1920x1080     60.00*+  59.94    50.00    60.00    50.04  
   1680x1050     59.95  
   1440x900      59.89  
   1440x576      50.00  
   1440x480      59.94  
   1280x1024     75.02    60.02  
   1280x960      60.00  
   1280x720      60.00    59.94    50.00  
   1152x864      75.00  
   1024x768      75.03    70.07    60.00  
   800x600       75.00    72.19    60.32    56.25  
   720x576       50.00  
   720x480       59.94  
   640x480       75.00    72.81    59.94    59.93  
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)

HDMI-0 is the monitor i'm currently using, however, it's not showing my VGA cable currently connected to another monitor.

The output of

sudo lshw -C display

is:

*-display                 
       description: VGA compatible controller
       product: GM107 [GeForce GTX 750 Ti]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       version: a2
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
       configuration: driver=nvidia latency=0
       resources: irq:128 memory:de000000-deffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:e000(size=128) memory:c0000-dffff

I think the problem may be, that the vga is compatible with my graphics card, but it's plugged into my motherboard, while my hdmi is plugged into my graphics card.
I don't know if i can change that because my motherboard doesn't have an hdmi slot, and my gpu doesn't have a vga slot

Are there adapters i can buy? Is this even the problem?

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#2 2019-12-19 16:57:24

Slithery
Administrator
From: Norfolk, UK
Registered: 2013-12-01
Posts: 5,776

Re: xrandr not detecting VGA

What CPU?


No, it didn't "fix" anything. It just shifted the brokeness one space to the right. - jasonwryan
Closing -- for deletion; Banning -- for muppetry. - jasonwryan

aur - dotfiles

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#3 2019-12-19 18:52:04

bigmac_nopickles
Member
Registered: 2019-11-16
Posts: 25

Re: xrandr not detecting VGA

Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz

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#4 2019-12-19 20:32:46

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 74,307

Re: xrandr not detecting VGA

There's DVI-VGA adapters for sure, often you get them with the graphics card (the quality is not exciting, but they do the job)
HDMI-VGA is possible but likely more expensive and more fragile.

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#5 2019-12-19 21:55:44

bigmac_nopickles
Member
Registered: 2019-11-16
Posts: 25

Re: xrandr not detecting VGA

So the only solution would be to get an adapter? That kind of sucks. But if i'm converting to DVI, i'd assume it will work with both my cpu and gpu, right? Anyways, i'll test it out and update when i can

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#6 2019-12-19 22:02:14

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 74,307

Re: xrandr not detecting VGA

Given the HW supports it

xrandr --listproviders

you can use https://wiki.archlinux.org/index.php/NV … phics_only to make the intel chip an output sink for the nvidia source.

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