Debian monitor problem

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Debian monitor problem

Postby Maxime025 » 2020-12-20 13:28

Hi everyone

Before explain my problem, I just want to say it:
-I am French but I don't find any answers in French forums (so sorry for next english mistakes)
-I am a beginner in Linux (≃ 2years), please explain.
-My PC is this on, but with an intel core i5 9th and a GTX 1050: https://www.lenovo.com/fr/fr/laptops/id ... 8IPL301162

So:

I use a dual monitor setup:
- My laptop screen
- A “LG FLATRON W2241S-BF” with VGA input. so I use this converter HDMI to VGA:
https://www.amazon.fr/1080P-femelle-ord ... 71&sr=8-14


My laptop was sold with Windows10 and I have installed Linux in dual boot



In the paste, I had installed (in order):
-Ubuntu
-Kubuntu
-Manjaro Plasma
-POP! OS
And the 2 screens was on



But, then, I installed Deepin 20 and my “LG” stopped to function :( ... but in Windows10, the 2 screens were on.

then, bodhi Linux: just laptop screen again

and now I have Debian 10 with Plasma, and I just see a text at boot, and then, my screen is not at all detect by the OS. I make a video for you can see this strange bug: https://youtu.be/WjNwCt_hLD4




Please give me your opinion if you have the solution or not. :wink:


Thank you very much. :)
Maxime025
 
Posts: 2
Joined: 2020-11-14 10:15

Re: Debian monitor problem

Postby Head_on_a_Stick » 2020-12-20 19:35

I think 9th generation Intel is too new for Debian buster's stock kernel. Check the X.Org log to see what is actually happening. The lscpi command will show which kernel drivers are loaded, read the man page to find the relevant switch.

See my [FAQ] guide in the HowTo section for updating the kernel from the buster-backports repository and also grab the firmware-misc-nonfree package from there, that will be needed for both the Intel iGPU and the NVIDIA discrete GPU. Once you've done that refer to the Optimus page on the Debian wiki.
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Re: Debian monitor problem

Postby Maxime025 » 2020-12-22 16:46

OK

It is probably a kernel problem,

I use the 4.19.0-13-amd64 Debian kernel.
I try Fedora 33 with 5.8 kernel and it was OK.

I don't want to use a non-official Debian version so I will change to another one distro

Thank you very much to your help :D :D :D
Maxime025
 
Posts: 2
Joined: 2020-11-14 10:15

Re: Debian monitor problem

Postby Head_on_a_Stick » 2020-12-22 17:12

Maxime025 wrote:I don't want to use a non-official Debian version

"Unofficial" is in reference to the non-free firmware, which cannot be included in the official release because it violates Debian's policy. It does not denote a different "version" of Debian.

https://www.debian.org/social_contract

https://www.debian.org/social_contract#guidelines

I need the non-free firmware for my wireless & graphics card:
Code: Select all
$ vrms
                Non-free packages installed on E485

amd64-microcode                     Processor microcode firmware for AMD CPUs
firmware-amd-graphics               Binary firmware for AMD/ATI graphics chips
firmware-iwlwifi                    Binary firmware for Intel Wireless cards
icc-profiles                        ICC color profiles for use with color profile aware so
steam                               Valve's Steam digital software delivery system

                Contrib packages installed on E485

game-data-packager                  Installer for game data files
game-data-packager-runtime          Launcher for proprietary games
quake2                              classic science-fiction-themed first person shooter
yamagi-quake2                       enhanced version of id Software's Quake II - client
yamagi-quake2-core                  enhanced version of id Software's Quake II - non-GUI p

  5 non-free packages, 0.2% of 2791 installed packages.
  5 contrib packages, 0.2% of 2791 installed packages.
$
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