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[SOLVED] Debian 9 - Unknown Monitor - Bad Resolution Issue

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MikeEcho
Posts: 18
Joined: 2017-04-16 08:18

[SOLVED] Debian 9 - Unknown Monitor - Bad Resolution Issue

#1 Post by MikeEcho »

Hey,

I have a desktop with a R9 270X graphic card and two screens (1920*1080). Both screens are linked to the graphic card via DVI (one screen to one socket and the other screen to the other socket). Everything works fine on Debian 8 (MATE).

I've just installed Debian 9 (MATE) on that computer. I've ended with a rubbish resolution of 1024*768 on both screen. The other issue is that just one screen is recognize. Nevertheless, the other screen works but like a mirror of the first one.

Image

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mikael@DESKTOP:~$ lspci -nn | grep VGA
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Curacao XT / Trinidad XT [Radeon R7 370 / R9 270X/370X] [1002:6810]

Code: Select all

mikael@DESKTOP:~$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1024 x 768, current 1024 x 768, maximum 1024 x 768
default connected primary 1024x768+0+0 0mm x 0mm
1024x768      76.00* 
Could you help me fixing this problem ?

Thanks.
Last edited by MikeEcho on 2017-11-17 19:49, edited 1 time in total.


MikeEcho
Posts: 18
Joined: 2017-04-16 08:18

Re: Debian 9 - Unknown Monitor - Bad Resolution Issue

#3 Post by MikeEcho »

Thanks but look at my xrandr logs.

Maximum resolution is 1024.

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Re: Debian 9 - Unknown Monitor - Bad Resolution Issue

#4 Post by arochester »

The video shows you how to change this.

MikeEcho
Posts: 18
Joined: 2017-04-16 08:18

Re: Debian 9 - Unknown Monitor - Bad Resolution Issue

#5 Post by MikeEcho »

Problem solved !

I've forgotten to install firmware-linux-nonfree !

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