** Description changed: [ Impact ] GNOME shell and other 3D programs run using software rendering after unity removal. This SRU covers only the upgrade case or if nux-tools removal happens after this update, for people who already upgraded and in broken state another SRU will follow. [ Test case ] · Install xenial · Upgrade to bionic or artful (assuming you're using a GNOME session) · sudo apt remove nux-tools · log into your session . From terminal: - printenv LIBGL_ALWAYS_SOFTWARE Should print nothing (and return an error) Same should happen if you don't remove nux-tools but you change `/usr/lib/nux/unity_support_test` not to run properly (replace with a script exiting 1), but you're running a GNOME session. + + · If running Unity session instead, ensure that + printenv LIBGL_ALWAYS_SOFTWARE equals 1 in case that you're running + in an environment with no 3d support (VMs are easy tests) [ Regression Potential ] Unity desktops with no 3d support could not start anymore. =========================== After an upgrade from 17.10 to 18.04, I noticed that all gnome windows animations were gone. After some digging, it seems that gnome-session incorrectly assumes that my graphics has no acceleration, when in fact it does: it's a i5-2520M CPU @ 2.50GHz with Intel integrated graphics (i915 driver). I've tried this with and without the xserver-xorg-video-intel package (a.k.a. Intel driver) with the same behavior. The output of gnome-session-check-accelerated is: llvmpipe (LLVM 6.0, 256 bits) however the system should have DRM 2.0 capability. GL checks (e.g. glxinfo, glxgears produce the expected output from a working DRM system). mesa-utils and mesa-utils-extra are both installed. I can't find a work around. Perhaps there is something wrong with my install/upgrade? Everything else works fine, although the graphical transitions are no longer smooth. But it would be nice to restore the expected behavior. I have attached the log of 'journalctl -b0' ProblemType: BugDistroRelease: Ubuntu 18.04 Package: gnome-session 3.28.1-0ubuntu2 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: Wed May 2 13:06:00 2018 EcryptfsInUse: Yes InstallationDate: Installed on 2016-04-22 (739 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bashSourcePackage: gnome-session UpgradeStatus: Upgraded to bionic on 2018-04-27 (5 days ago)
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1768610 Title: leftover conffile forces GNOME is software rendering Status in mesa package in Ubuntu: New Status in nux package in Ubuntu: Fix Released Status in mesa source package in Xenial: New Status in nux source package in Xenial: Fix Committed Status in mesa source package in Artful: New Status in nux source package in Artful: Fix Committed Status in mesa source package in Bionic: New Status in nux source package in Bionic: Fix Committed Bug description: [ Impact ] GNOME shell and other 3D programs run using software rendering after unity removal. This SRU covers only the upgrade case or if nux-tools removal happens after this update, for people who already upgraded and in broken state another SRU will follow. [ Test case ] · Install xenial · Upgrade to bionic or artful (assuming you're using a GNOME session) · sudo apt remove nux-tools · log into your session . From terminal: - printenv LIBGL_ALWAYS_SOFTWARE Should print nothing (and return an error) Same should happen if you don't remove nux-tools but you change `/usr/lib/nux/unity_support_test` not to run properly (replace with a script exiting 1), but you're running a GNOME session. · If running Unity session instead, ensure that printenv LIBGL_ALWAYS_SOFTWARE equals 1 in case that you're running in an environment with no 3d support (VMs are easy tests) [ Regression Potential ] Unity desktops with no 3d support could not start anymore. =========================== After an upgrade from 17.10 to 18.04, I noticed that all gnome windows animations were gone. After some digging, it seems that gnome-session incorrectly assumes that my graphics has no acceleration, when in fact it does: it's a i5-2520M CPU @ 2.50GHz with Intel integrated graphics (i915 driver). I've tried this with and without the xserver-xorg-video-intel package (a.k.a. Intel driver) with the same behavior. The output of gnome-session-check-accelerated is: llvmpipe (LLVM 6.0, 256 bits) however the system should have DRM 2.0 capability. GL checks (e.g. glxinfo, glxgears produce the expected output from a working DRM system). mesa-utils and mesa-utils-extra are both installed. I can't find a work around. Perhaps there is something wrong with my install/upgrade? Everything else works fine, although the graphical transitions are no longer smooth. But it would be nice to restore the expected behavior. I have attached the log of 'journalctl -b0' ProblemType: BugDistroRelease: Ubuntu 18.04 Package: gnome-session 3.28.1-0ubuntu2 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: Wed May 2 13:06:00 2018 EcryptfsInUse: Yes InstallationDate: Installed on 2016-04-22 (739 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bashSourcePackage: gnome-session UpgradeStatus: Upgraded to bionic on 2018-04-27 (5 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1768610/+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
