Similar problem. I actually had updated to 18.04 beta, with no problems. The issue manifested itself after I upgraded to the final release yesterday. I don't think it's related to similar other bugs as I have libegl-mesa0 . I also cannot find any error message in the logs, seems that Xorg loads all of the HW acceleration libraries just fine, but for some reason gnome-shell runs on llvmpipe.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to libglvnd in Ubuntu. https://bugs.launchpad.net/bugs/1767468 Title: Upgrade from 16.04 to 18.04 disables hardware acceleration on Intel Graphics Status in libglvnd 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) > 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/libglvnd/+bug/1767468/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
