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

Getting your soundcard to work, using Debian on non-i386 hardware, etc

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

Postby MikeEcho » 2017-11-17 10:59

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

Code: Select all
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
 
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Re: Debian 9 - Unknown Monitor - Bad Resolution Issue

Postby arochester » 2017-11-17 11:23

"Something to be aware of: Debian is a core or source distribution. This means there are many Debian-based distributions. THEY ARE NOT DEBIAN."
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Re: Debian 9 - Unknown Monitor - Bad Resolution Issue

Postby MikeEcho » 2017-11-17 11:42

Thanks but look at my xrandr logs.

Maximum resolution is 1024.
MikeEcho
 
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Re: Debian 9 - Unknown Monitor - Bad Resolution Issue

Postby arochester » 2017-11-17 12:03

The video shows you how to change this.
"Something to be aware of: Debian is a core or source distribution. This means there are many Debian-based distributions. THEY ARE NOT DEBIAN."
arochester
 
Posts: 1112
Joined: 2010-12-07 19:55

Re: Debian 9 - Unknown Monitor - Bad Resolution Issue

Postby MikeEcho » 2017-11-17 19:48

Problem solved !

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