You have been subscribed to a public bug:
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)
** Affects: nux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug bionic
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Upgrade from 16.04 to 18.04 disables hardware acceleration on Intel Graphics
https://bugs.launchpad.net/bugs/1767468
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which is subscribed to nux in Ubuntu.
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