@Michele - Thanks, that did it for me. This problem has been driving me nuts since I upgraded to 18.04.
I went one step further though. I noticed that file belonged to the nux- tools package. I went ahead and ran "sudo apt purge nux-tools". I didn't see a need to keep that package around anymore. No other packages were depending on that package either. lspci: 00:02.0 VGA compatible controller: Intel Corporation Device 5927 (rev 06) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to nux in Ubuntu. https://bugs.launchpad.net/bugs/1767468 Title: Upgrade from 16.04 to 18.04, then uninstalling unity disables hardware acceleration Status in nux package in Ubuntu: Confirmed Bug description: After upgrading from 16.04 to 18.04 on a very plain Intel Skylake graphics, hardware acceleration is gone. Glxinfo and System Information report 'llvmpipe' (software rasterizer) It is caused by the file /etc/X11/Xsession.d/50_check_unity_support which can be deleted and then this problem goes away. > 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 520 (rev 07) ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: libglvnd0 1.0.0-2ubuntu2 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Fri Apr 27 20:24:48 2018 Dependencies: gcc-8-base 8-20180414-1ubuntu2 libc6 2.27-3ubuntu1 libgcc1 1:8-20180414-1ubuntu2 EcryptfsInUse: Yes InstallationDate: Installed on 2016-04-21 (735 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) SourcePackage: libglvnd UpgradeStatus: Upgraded to bionic on 2018-04-26 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nux/+bug/1767468/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
