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New User and Installation Radeon Graphics Resolution

Ask for help with issues regarding the Installations of the Debian O/S.
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Budgie
Posts: 31
Joined: 2007-06-17 14:50

New User and Installation Radeon Graphics Resolution

#1 Post by Budgie »

I am running a brand new installation of Debian 9 on a machine with a built in graphics adapter.

Here is the result of running lspci:-

Code: Select all

alastair@x3400debian:~$ lspci -nn | grep VGA
15:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Caicos [Radeon HD 6450/7450/8450 / R5 230 OEM] [1002:6779]
alastair@x3400debian:~$
My problem is that I can only get one resolution which is 800 x 600 which seems to be the default.
AFAIK I have the right non-free packages installed but how may I change the resolution please?

xrandr seems to tell me that the hardware info is not being picked up:-

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alastair@x3400debian:~$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 800 x 600, current 800 x 600, maximum 800 x 600
default connected primary 800x600+0+0 0mm x 0mm
   800x600       75.00* 
alastair@x3400debian:~$ 
Possible as I am working remotely through a kvm switch but I do not have this problem with another machine with the same setup but different OS.

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bw123
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Re: New User and Installation Radeon Graphics Resolution

#2 Post by bw123 »

I would probably start by looking up the specific model kvm with the word debian or xorg and see if there is a simple solution. If not, maybe you can supply the monitor info to the xsrver another way.

https://en.wikipedia.org/wiki/KVM_switch#Monitor
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Segfault
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Re: New User and Installation Radeon Graphics Resolution

#3 Post by Segfault »

It is also possible the AMD driver is not loaded for some reason and you are using fallback video driver.

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stevepusser
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Re: New User and Installation Radeon Graphics Resolution

#4 Post by stevepusser »

AMD graphics require the non-free firmware-amd-graphics package, which the normal Debian ISO does not install.

https://wiki.debian.org/AtiHowTo#Firmware

Note that many find it easier to just download and install the firmware deb file manually with dpkg than to add the non-free repository, update, and install the package through the Net.
MX Linux packager and developer

Budgie
Posts: 31
Joined: 2007-06-17 14:50

Re: New User and Installation Radeon Graphics Resolution

#5 Post by Budgie »

bw123 wrote:I would probably start by looking up the specific model kvm with the word debian or xorg and see if there is a simple solution. If not, maybe you can supply the monitor info to the xsrver another way.

https://en.wikipedia.org/wiki/KVM_switch#Monitor
Hi and thanks for the suggestion. Unfortunately it is not that simple because I have KVM and then switch for four machines. The other machines are working correctly so I am sure it is something in the way I have Debian set up. Since this is my first day with Debian I am still finding my way around.

Budgie
Posts: 31
Joined: 2007-06-17 14:50

Re: New User and Installation Radeon Graphics Resolution

#6 Post by Budgie »

stevepusser wrote:AMD graphics require the non-free firmware-amd-graphics package, which the normal Debian ISO does not install.

https://wiki.debian.org/AtiHowTo#Firmware

Note that many find it easier to just download and install the firmware deb file manually with dpkg than to add the non-free repository, update, and install the package through the Net.
Hi Steve and thanks for the reply. As I put in my post, I have the non-free stuff installed already but must have configuration wrong.

Budgie
Posts: 31
Joined: 2007-06-17 14:50

Re: New User and Installation Radeon Graphics Resolution

#7 Post by Budgie »

Thanks to journalctl -b I found the problem. Although I have the right source repos the radeon graphics adapter I have requires 'firmware-amd-graphics' to be installed. Once done all is OK so will close this thread.

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