I found that my notebook HP G62 is a Muxless GPU system, with an IGP i915 + DIS Radeon 54xx.
The way I can run an app in accelerated mode is with "DRI_PRIME=1 glxgears" But I cannot enable it by default. Also an important app for me fail to start with this silly message: "intel_do_flush_locked failed: No such file or directory" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1406222 Title: Can't switch to Radeon rendering To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1406222/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs