Ubuntu – Display issues with Ubuntu 14.04 with AMD R9 380 graphics card

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I built a new computer to dual boot Windows and Ubuntu and am using the AMD R9 380 Graphics card. Windows installation went fine. After installing Ubuntu 14.04 I found that I can't change my screen resolution. I tried installing the proprietary drivers from the AMD website and then I couldn't boot the OS. I reinstalled Ubuntu and stayed with the open source drivers but the problem remains.

The solutions I found online used xrandr to set resolutions but when I run it I always get "Failed to get size of gamma for default output". When I try to change the system display settings I can only use one resolution (1024×768) and only uses built-in display. Clicking on detect displays doesn't do anything.

Does anyone know a resolution?

Best Answer

I just completed a build of new desktop using the Radeon R9 380 graphics card and got the exact same problem. I fixed this by going into:

System Settings .. Software & Updates .. Additional Drivers

I chose the AMD graphics accelerators from fglrx updates

I hope that this works for you as well

Related Solutions

Ubuntu – Intel/AMD Hybrid graphics on Ubuntu 14.04

With the release of Ubuntu 14.10, some of the problems related to this incompatibility issue appear to be solved. I succeeded to make both graphic cards to work as follows:

1) Install Ubuntu 14.10. In my case, I first tried updating from 14.04 but I messed up with the installation. I ended up doing a clean install from an Ubuntu CD.

2) Install the fglrx driver from "Software & Updates" -> "Additional Drivers".

3) Reboot

4) Unfortunately, the AMD Catalyst Control Center behave weirdly. The first time I run it, it did run normally. I used it to switch the card. After a reboot, the AMD Catalyst Control Center did not run anymore. To switch between cards, please follow the step 5).

5) Check whether you are using the discrete card (radeon) or the integrated one (intel) by running the in a terminal:

amdconfig --pxl

If you are using the Intel card, you should see a message like:

PowerXpress: Integrated GPU is active (Power-Saving mode).

Otherwise you will see a similar message stating that the discrete card is currently in use. To switch from using the discrete card to the integrated one, run the following command:

amdconfig --px-igpu

For the other way around, run the following command:

amdconfig --px-dgpu

In both cases you will be prompted to restart the X server. You may log out and log in again for the changes to take effect.

Best Answer

Related Solutions

Ubuntu – Intel/AMD Hybrid graphics on Ubuntu 14.04

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