After upgrading kernel to 3.14 (plus adding radeon.runpm=0 to kernel cmdline) and upgrading xserver ati/radeon & intel drivers from git (version in trusty is not enough!), then *both* graphics cards (via dri prime) on Dell Latitude E6440 in Ubuntu Precise 12.04.4 started working.
$ glxinfo | grep OpenGL OpenGL vendor string: Intel Open Source Technology Center OpenGL renderer string: Mesa DRI Intel(R) Haswell Mobile OpenGL version string: 3.0 Mesa 10.2.0-devel OpenGL shading language version string: 1.30 OpenGL extensions: $ xrandr --setprovideroutputsource 1 0 $ DRI_PRIME=1 glxinfo | grep OpenGL OpenGL vendor string: X.Org OpenGL renderer string: Gallium 0.4 on AMD HAINAN OpenGL version string: 2.1 Mesa 10.2.0-devel OpenGL shading language version string: 1.30 OpenGL extensions: You can find kernel 3.14 (works with precise) on: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14-trusty/ And xserver drivers in my PPA (for precise): https://launchpad.net/~pali/+archive/graphics-drivers -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1290745 Title: [Radeon HD 8670A][1002:6660] Unable to load into live desktop after clicked "Try Ubuntu" on 12.04.4 bootable usb drive To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1290745/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
