Trying to use the Radeon 8790M on my Dell Latitude E6540 running Kubuntu 13.04 (Raring). This laptop also has an Intel adapter (for power saving). lspci gives:
$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Haswell Integrated Graphics Controller (rev 06)
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Mars [Radeon HD 8790M]
Tried using the standard fglrx and fglrx-update and aticonfig results in (in a message box):
aticonfig: No supported adapters detected
Trying AMD's drivers always renders the same result:
Your graphics adaper is not supported by this driver. Installation will not proceed.
There is no 3D acceleration, as evident by running glxgears:
$ glxgears
X Error of failed request: BadRequest (invalid request code or no such operation)
Major opcode of failed request: 153 (GLX)
Minor opcode of failed request: 19 (X_GLXQueryServerString)
Serial number of failed request: 12
Current serial number in output stream: 12
This may be an issue of the multi-adapter situation, but I'm not sure how to resolve this.
I'm not even sure whether the latest driver (3.8) does not recognize the adapter because the driver is broken (it is beta) or because the Radeon is switched away in favor of the Intel.
Anyway, external screen works fine, and power consumption is as expected.
– stanga Aug 13 '13 at 23:44