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I am running Ubuntu 12.04; the pc's graphics card is a Radeon HD797M, with Intel switchable graphics.

My problem seems similar to some already reported (e.g. here) but the solutions in https://help.ubuntu.com/community/BinaryDriverHowto/ATI fail in my case. The last I've tried is the manual installation of the catalyst drivers, for the case for Intel/ATI hybrid graphics.

fglrxinfo returns:

$ fglrxinfo
X Error of failed request:  BadRequest (invalid request code or no such operation)
  Major opcode of failed request:  154 (GLX)
  Minor opcode of failed request:  19 (X_GLXQueryServerString)
  Serial number of failed request:  12
  Current serial number in output stream:  12

CCC refuses to start, with the message: "No AMD graphics driver is installed, or the AMD driver is not functioning properly. Please install the AMD driver appropriate for you AMD hardware, or configure using aticonfig.", and

$ aticonfig
aticonfig: No supported adapters detected

These errors are independent of the way the installation of fglrx is done (which always seems to go smoothly); it occurred in the default configuration of Pangolin straight after installation.

In the manual installation route, for example, step 7.

sudo ./amd-driver-installer-12-6-x86.x86_64.run

runs fine, but step 8. fails like aticonfig

$ sudo amdconfig --initial
amdconfig: No supported adapters detected

(By the same token, --uninstall also fails).

Any help greatly appreciated

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