Public bug reported: I tried both release and proposed versions of libgl1-mesa-dri (10.1.3-0ubuntu0.1 and 10.1.3-0ubuntu0.2). They both produce the same error as shown below:
$ LIBGL_DEBUG=verbose glxinfo name of display: :0 libGL: screen 0 does not appear to be DRI3 capable libGL: screen 0 does not appear to be DRI2 capable libGL: OpenDriver: trying /usr/lib/x86_64-linux-gnu/dri/tls/swrast_dri.so libGL: OpenDriver: trying /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so libGL: driver does not expose __driDriverGetExtensions_swrast(): /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so: undefined symbol: __driDriverGetExtensions_swrast The workaround, as referenced in the following link, is to downgrade libgl1-mesa-dri. I tried downgrading to 10.1.0-4ubuntu5 but it also didn't work. https://bbs.archlinux.org/viewtopic.php?id=180451 ** Affects: unity-greeter (Ubuntu) Importance: Undecided Status: New ** Tags: cinnamon dri mesa virtualbox -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1379630 Title: libgl1-mesa-dri in Ubuntu 14.04 causes Cinnamon to launch into software render mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1379630/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs