Display Madness | x11|Nvidia |Plasma

Data007 · 2022-09-15 06:02:49

❯ xrandr --listmonitors

Monitors: 2
 0: +DP-3 1920/580x1080/320+0+0  DP-3
 1: +DP-1 1920/1600x1080/900+1920+0  DP-1

Nvidia GTX 1070
two hdmi
two Display Ports

Something has gone wrong with the display settings in plasma. It thinks that I have 3 display ports one of which it thinks is disabled.
How to resolve this (thinking) ???

Why do I think that it thinks it has 3 display ports ?
1. There are only 4 ports on the card.
2 Plasmas "Panels and Desktops Management" shows one as disabled. I would post an image but I think they are banned -/- undesirable
3. Plain xrander

 ❯ xrandr
Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 32767 x 32767
DVI-D-0 disconnected primary (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 1600mm x 900mm
   1920x1080     60.00*+  59.94    50.00    29.97    23.98    60.05    60.00    50.04  
   1680x1050     59.95  
   1600x900      60.00  
   1280x1024     60.02  
   1280x720      60.00    59.94    50.00    29.97    23.98  
   1152x864      75.00  
   1024x768      60.00  
   800x600       60.32  
   720x576       50.00  
   720x480       59.94  
   640x480       59.94    59.93  
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 580mm x 320mm
   1920x1080     60.00*+  59.94    50.00    29.97    25.00    23.98    60.05    60.00    50.04  
   1280x1024     75.02  
   1280x720      60.00    59.94    50.00  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       59.94  
   640x480       59.94    59.93

seth · 2022-09-15 07:58:53

Please post the output of "xrandr --listproviders" and your complete xorg log, https://wiki.archlinux.org/title/Xorg#General
Can you activate the 3rd monitor by:
1. Switching to a console terminal (ctrl+alt+F1,2,3,…)?
2. re-plugging it ?
3. unplugging either of the other two (and in doubt re-plugging the disabled output)
4. swapping cables

The output might have un-registered (failing handshake, HDMI/HDCP is super fragile) or you've only two crts w/ the physical DP and HDMI plugs sharing one each (though the 4 DPs do not really indicate that) or the cable is broken (because it's a cable and that's what they do…)

I would post an image but I think they are banned -/- undesirable

Don't post pictures of text, but it's ok to link illustrative pictures of GUI stuff. You're just not supposed to embed large images w/ the "img" tag.

Data007 · 2022-09-15 09:54:00

Please post the output of "xrandr --listproviders" and your complete xorg log, https://wiki.archlinux.org/title/Xorg#General

❯ xrandr --listproviders
Providers: number : 1
Provider 0: id: 0x1b7 cap: 0x1, Source Output crtcs: 4 outputs: 7 associated providers: 0 name:NVIDIA-0

❯ grep -e Log -e tty Xorg.0.log
grep: Xorg.0.log: No such file or directory

Smoking gun!!? I did drill down looking for xorg.

Can you activate the 3rd monitor by:
1. Switching to a console terminal (ctrl+alt+F1,2,3,…)?
2. re-plugging it ?
3. unplugging either of the other two (and in doubt re-plugging the disabled output)
4. swapping cables

Perhaps I did not explain well, there has only ever been 2 displays on this computer, and there has NEVER been a third screen.
Swapping cables, plugs, live was one of the first things I tried but no joy, the cables work and displays work along with adapters (HDMI to DP) Hdmi direct are iffy(lose) HDMI onboard the card has never been connected for well over 8 months or more, this is a fresh install 2days old at best.

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Last edited by Data007 (2022-09-15 10:17:29)

V1del · 2022-09-15 10:34:26

What is your question exactly? If it's just about the numbering/availability of possible displays then that's generally up to what the hardware reports to the operating system and can often deviate from what you physically see (e.g. the card is designed and specced for three outputs but your HW vendor just physically shows three while the other is a dummy somewhere in the case). If it's "just" the naming that you have an issue with then the easiest to just ignore the faulty listing. You could setup a static xorg conf to make them disappear that, will lose you quite a bit of flexibility should you ever decide to deviate from your current setup.

Is it only in Plasma's monitor settings you see an additional screen you'd want to get rid of? can you link a screenshot?

Last edited by V1del (2022-09-15 10:51:28)

Data007 · 2022-09-15 11:16:24

Hi
I installed a piece of software "davinci resolve" this mucked up the display arrangement. I'm pretty sure that was what it was.
Anyway I lost the taskbar I could not locate it.
so I started making a new one during this I in editing mode, Plasma has this I selected the "mange desktops and panels" option and discovered that it(taskbar) was there on this so called dp3.
There is an option to transfer displays, and taskbar .... around so I transferred the taskbar to one off the working (two displays) and here I am.

This has left me with a display dp2 with dp1, dp3 (I think it is working). dp2 being there but showing disabled.

How to :
Remove this dp that is not working?
Having removed the software (Davinci) to try and see if that would fix the display issue, it would be nice now to reinstall but can't as its found the previous install, and leftover logfiles and bits I assume.

error: failed to commit transaction (conflicting files)
davinci-resolve: /usr/lib/udev/rules.d/75-davincipanel.rules exists in filesystem
davinci-resolve: /usr/lib/udev/rules.d/75-sdx.rules exists in filesystem
Errors occurred, no packages were upgraded.
 -> error installing repo packages

I was asked for xorg logs but can't find a directory/folder for that,

I think for the best perhaps its best to go again and reinstall Arch, pity as I had it all set up.

Your thoughts?
Edit: from post one

Something has gone wrong with the display settings in plasma. It thinks that I have 3 display ports one of which it thinks is disabled.
How to resolve this (thinking) ???

Last edited by Data007 (2022-09-15 11:22:38)

V1del · 2022-09-15 11:32:17

If it's just kscreens cache that got mucked up you can try looking at/removing ~/.local/share/kscreen/ and restarting plasma.

As for the left over files for davinci, the PKGBUILD mentions those can be left over, you can just manually remove the files mentioned and redo the installation/keep it removed and check whether a reboot after having removed these files changes things.

For the xorg log you simply need to read the linked section instead of copy pasting the first thing that looks like a command, there are two possible locations depending on how Xorg is started.

Data007 · 2022-09-15 20:19:23

 Xorg Log big so I stuck it on paste bin
https://pastebin.com/iMLE54Te

If it's just kscreens cache that got mucked up you can try looking at/removing ~/.local/share/kscreen/ and restarting plasma.

I have done this no effect, I have completely removed files and rebooted, and in the end removed the while folder no different.

HIH My situation is that I will be probably very busy GMT 9-Midday and be unable to respond(fri).
I may be able to receive emails from the forum about your posts and be unable to send replies during this time.

I think that a reinstall is likely, although I loathe doing that again.

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Last edited by Data007 (2022-09-15 20:22:19)

seth · 2022-09-15 20:45:45

Log out of plasma and remove ~/.local/share/kscreen/ from a tty login. Log into again. Problem remains?
For clarification: is this only the kscreen GUI or are the plasma panels also on the wrong output?

Data007 · 2022-09-15 21:06:34

Log out of plasma and remove ~/.local/share/kscreen/ from a tty login. Log into again. Problem remains?

Yes even at tty having logged there is no kscreen dir
Edit:Yes still problem.

For clarification: is this only the kscreen GUI or are the plasma panels also on the wrong output?

The plasma panels(do you mean taskbar) I am unsure of your exact meaning.
The taskbar/panel was on this disabled dp2 screen I was able to move it to one of the other screens/DP's and from there move it to the correct primary display.
What I see:>https://www.dropbox.com/s/nqm3imj5tyxg0k2/Diaplays.png?dl=0 Not sure if the URL will be allowed.

HIH

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Last edited by Data007 (2022-09-15 21:09:25)

seth · 2022-09-15 21:27:32

That's not the kscreen config but plasma's panel config that has probably recorded "saw this output somewhen" somewhere - I'd not be surprised if you could even remove it there (since there's a config icon)?

Data007 · 2022-09-16 06:47:38

That's not the kscreen config but plasma's panel config that has probably recorded "saw this output somewhen" somewhere - I'd not be surprised if you could even remove it there (since there's a config icon)?

I wish, I have tried nosing around the menu, while one can delete/move 'panels-taskbars' and the like, seemingly you can not delete this unpresent display.

Arch Linux

#1 2022-09-15 06:02:49

Display Madness | x11|Nvidia |Plasma

#2 2022-09-15 07:58:53

Re: Display Madness | x11|Nvidia |Plasma

#3 2022-09-15 09:54:00

Re: Display Madness | x11|Nvidia |Plasma

#4 2022-09-15 10:34:26

Re: Display Madness | x11|Nvidia |Plasma

#5 2022-09-15 11:16:24

Re: Display Madness | x11|Nvidia |Plasma

#6 2022-09-15 11:32:17

Re: Display Madness | x11|Nvidia |Plasma

#7 2022-09-15 20:19:23

Re: Display Madness | x11|Nvidia |Plasma

#8 2022-09-15 20:45:45

Re: Display Madness | x11|Nvidia |Plasma

#9 2022-09-15 21:06:34

Re: Display Madness | x11|Nvidia |Plasma

#10 2022-09-15 21:27:32

Re: Display Madness | x11|Nvidia |Plasma

#11 2022-09-16 06:47:38

Re: Display Madness | x11|Nvidia |Plasma

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