Arch Linux

860lacov

Member

Registered: 2020-05-02

Posts: 497

[SOLVED] How to choose DVI ?

EDIT
The Problem is solved, but it wasn't Arch or hardware issue. Description at the end of the topic.

On my GPU I have two DVI ports
Yesterday during installation and after reboot everything was ok.
Today when I powered on my pc after bios information screen went black.
I changed dvi and It's ok now but I don't know why this happened.

I didn't have ssh set up so physical DVI change was only one thing that came to my mind.
Is this only way?

No window manager or desktop environment yet.

Last edited by 860lacov (2021-03-10 21:47:56)

860lacov

Member

Registered: 2020-05-02

Posts: 497

Re: [SOLVED] How to choose DVI ?

I was able to install the system.
Just change DVI port during installation.
Not the prefect solution but...

Now the problem is similar with the system.
With desktop environment (Gnome)
System boots up but it looks like this:

Bios messages
black screen
GDM - it seems that gdm can detect where DVI cable is connected

To change kernel during boot I have to switch DVI ports to see grub.
On installed system can I force bootloader (not sure if it’s bootloader case) to use only DVI1 or DVI2 port?

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,094

Re: [SOLVED] How to choose DVI ?

No, this is usually determined by the BIOS/UEFI if you don't have an option there just swap the cables, is that not possible?

860lacov

Member

Registered: 2020-05-02

Posts: 497

Re: [SOLVED] How to choose DVI ?

No, this is usually determined by the BIOS/UEFI if you don't have an option there just swap the cables, is that not possible?

Fortunately I can swap cables but I wouldn't call this the perfect solution
Thanks anyway

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,094

Re: [SOLVED] How to choose DVI ?

It's likely based on pci/enumeration ordering, so you'd have to get a new motherboard and/or GPU if you don't have an option to set this in the current ones settings

Last edited by V1del (2020-11-04 14:16:53)

860lacov

Member

Registered: 2020-05-02

Posts: 497

Re: [SOLVED] How to choose DVI ?

Ok
A one little problem
During plasma installation I forgot to install konsole. I don't have any terminal emulator.
When I do ctrl+alt + F2-F12 I have black screen - monitor is in standby. It's on both DVI ports.
In F1 there is only plasma desktop.

How can I install konsole now?
In my mind there is only arch-chroot but maybe there is another way ?

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,094

Re: [SOLVED] How to choose DVI ?

Try adding nvidia-drm.modeset=1 to the kernel parameters.

860lacov

Member

Registered: 2020-05-02

Posts: 497

Re: [SOLVED] How to choose DVI ?

Try adding nvidia-drm.modeset=1 to the kernel parameters.

I've found this advice on official kde site
https://community.kde.org/Plasma/Wayland/Nvidia

I'm not sure so could you tell me if I'm correct. It should look like this?

GRUB_CMDLINE_LINUX_DEFAULT="nvidia-drm.modeset=1"

And if If I would like to add another parameter.
Should it look like this:

GRUB_CMDLINE_LINUX_DEFAULT="nvidia-drm.modeset=1, sample=2"

or

GRUB_CMDLINE_LINUX_DEFAULT="nvidia-drm.modeset=1","sample.modset=1"

Last edited by 860lacov (2020-11-04 22:01:28)

Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 14,873

Re: [SOLVED] How to choose DVI ?

Neither.
space is a separator for kernel parameters, comma is used when a parameter needs more then one value

example :

GRUB_CMDLINE_LINUX_DEFAULT="nvidia-drm.modeset=1 snd_hda_intel.index=-1,0,1 quiet splash"

---

Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

clean chroot building not flexible enough ?
Try clean chroot manager by graysky

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,094

Re: [SOLVED] How to choose DVI ?

I suggest you mark this thread as solved if the original question is answered. I only suggested the modesetting param to allow you to see a terminal, that you could theorethically use that for a Wayland session is indeed true, but neither questions are related to what you originally wanted to know.

860lacov

Member

Registered: 2020-05-02

Posts: 497

Re: [SOLVED] How to choose DVI ?

Problem is unsolved.
I'm after clean system install but I'm not able to go into bios or see grub.
Currently it looks like this:

On Nec p221w (DVI)
Black screen til SDDM

On older Samsung LCD (DVI)
Everything is working

Samsung TV (HDMI)
Everything is working

I will change GPU but not in the current prices.

860lacov

Member

Registered: 2020-05-02

Posts: 497

Re: [SOLVED] How to choose DVI ?

Ok
A little update.
I can set some LCD parameters over NEC software called spectra view. Some time ago, after color calibration I decided to lock OSD. I unlocked it recently and started to look what is inside. In one tab there is setting called DVI Selection.
It was set to Analog. I changed it to digital and now screen is working perfectly.
I don't remember changing this setting in the past but I'm not 100%  sure.