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I just installed ubuntu 14.04 on my thinkpad E555 with AMD R5 M240(kaveri) but i cant find any drivers and i think they are not automatically installed because at system details as Graphics is: Gallium 0.4 on llvmpipe(LLVM 3.5 m 128bits) and the interface is laggy.

Thanks,

1 Answers1

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The AMD Radeon R5 M240 seems to require at least Kernel 3.15 and Mesa 10.3. So you have the following options:

  1. Update to Ubuntu 14.10 or newer.
  2. Install a fresh Trusty point release 14.04.2 or
  3. Update your kernel and mesa with LTSEnablementStack, e.g. (using aptitude)

    sudo aptitude install linux-generic-lts-utopic  libgl1-mesa-glx-lts-utopic libegl1-mesa-drivers-lts-utopic
    

See the bug 1410205 and the explanation of LTSEnhancementStack.

Codica
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