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#1 2020-11-21 19:08:09

kuzulis
Member
Registered: 2018-05-10
Posts: 10

KMS screen resolution too small at using AMDGPU and system-boot loader

Hi all,

I have updated my HW to:

* GPU: PowerColor AMD Radeon RX 550 Red Dragon [AXRX 550 2GB64BD5-DH]
* Monitor: LG 27QN600-B [27QN600-B.ARUZ] (2K - 2560x1440)

And I made the following things:

* I have installed the AMDGPU driver && mesa: xf86-video-amdgpu && mesa packages from this WiKi: https://wiki.archlinux.org/index.php/AMDGPU
* I have added the MODULES=(... amdgpu ...) from this WiKi: https://wiki.archlinux.org/index.php/Ke … de_setting

My lspci output reported the following info:

[denis@arch-den ~]$ lspci -nn | grep VGA
09:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Lexa PRO [Radeon 540/540X/550/550X / RX 540X/550/550X] [1002:699f] (rev c7)

And the lsmod reported the following info:

[denis@arch-den ~]$ lsmod | grep amdgpu
amdgpu               6434816  29
gpu_sched              40960  1 amdgpu
i2c_algo_bit           16384  1 amdgpu
ttm                   122880  1 amdgpu
drm_kms_helper        266240  1 amdgpu
drm                   585728  14 gpu_sched,drm_kms_helper,amdgpu,ttm

But, when my PC is booting, then I see that the framebuffer resolution is not the 2560x1440, because I see that a font size is very big.

Can someone help me to fix it and to make the 2K resolution in the framebuffer console?

BR,
Denis

Last edited by kuzulis (2020-11-21 19:10:59)

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#2 2020-11-22 15:25:26

Lone_Wolf
Member
From: Netherlands, Europe
Registered: 2005-10-04
Posts: 8,593

Re: KMS screen resolution too small at using AMDGPU and system-boot loader

Which bootloader are you using ?

please post full output of journalctl -b (use a pastebin client, check wiki for details)


Multi-init booting with apg Openrc and systemd coexisting
Automounting : not needed, i prefer pmount
Aur helpers : makepkg + my own local repo === rarely need them

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#3 2020-11-22 17:24:00

kuzulis
Member
Registered: 2018-05-10
Posts: 10

Re: KMS screen resolution too small at using AMDGPU and system-boot loader

@Lone_Wolf,

I use the system-boot bootloader.

A problem solved. Need just to create the /etc/vconsole.conf file and then set the desired console font. And next, need to add the consolefont hook to the mkinitcpio.conf file.

Last edited by kuzulis (2020-11-22 17:25:25)

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#4 2020-11-23 10:43:44

Lone_Wolf
Member
From: Netherlands, Europe
Registered: 2005-10-04
Posts: 8,593

Re: KMS screen resolution too small at using AMDGPU and system-boot loader

I use the system-boot bootloader.

That one doesn't exist , you probably mean the systemd-boot bootloader.
And you don't need to change vconsole.conf or add a hook to mkinitcpio.conf to change the console resolution.

Check https://wiki.archlinux.org/index.php/Systemd-boot , section loader configuration.

Last edited by Lone_Wolf (2020-11-23 10:44:02)


Multi-init booting with apg Openrc and systemd coexisting
Automounting : not needed, i prefer pmount
Aur helpers : makepkg + my own local repo === rarely need them

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#5 2020-11-23 19:59:17

kuzulis
Member
Registered: 2018-05-10
Posts: 10

Re: KMS screen resolution too small at using AMDGPU and system-boot loader

That one doesn't exist , you probably mean the systemd-boot bootloader.

Yes, it is.

And you don't need to change vconsole.conf

Hmm, I didn't have this file at all before. But when I created this file and added the console font there, then it became working.

or add a hook to mkinitcpio.conf

Yes, many thanks it does work without of hook.

Last edited by kuzulis (2020-11-23 20:06:16)

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