This issue should be fixed by this mesa commit https://cgit.freedesktop.org/mesa/mesa/commit/?id=3199172eaa703ac4c1fc3830c8e49c367725c3b8 which should be included since Ubuntu 20.04/focal. Please reopen this issue if you still have this problem.
** Changed in: mesa (Ubuntu) Status: Confirmed => Fix Released -- 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/1841953 Title: Bionic ⋅ SuperTuxKart ⋅ Flickering shadows ⋅ Haswell i915 Status in mesa package in Ubuntu: Fix Released Status in supertuxkart package in Ubuntu: Invalid Bug description: Hi, for few weeks now, I've noticed a big change in graphic performance while playing famous SuperTuxKart on ubuntu bionic : shadows are flickering, all over the screen, it's a big pain for eyes ( and wonder what would happen for epileptic people ). My computer is : Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz with 16Go ram and Haswell integrated graphics. coeur-noir@asgard:~$ lspci -k | grep -A 2 -i "VGA" 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06) Subsystem: ASUSTeK Computer Inc. Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller Kernel driver in use: i915 coeur-noir@asgard:~$ sudo lshw -c video *-display description: VGA compatible controller produit: Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller fabriquant: Intel Corporation identifiant matériel: 2 information bus: pci@0000:00:02.0 version: 06 bits: 64 bits horloge: 33MHz fonctionnalités: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 ressources: irq:26 mémoire:f7800000-f7bfffff mémoire:e0000000-efffffff portE/S:f000(taille=64) mémoire:c0000-dffff coeur-noir@asgard:~$ My Ubuntu Budgie 18.04 is : coeur-noir@asgard:~$ lsb_release -rd Description: Ubuntu 18.04.3 LTS Release: 18.04 coeur-noir@asgard:~$ uname -a Linux asgard 5.0.0-23-generic #24~18.04.1-Ubuntu SMP Mon Jul 29 16:12:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux coeur-noir@asgard:~$ mesa packages are : coeur-noir@asgard:~$ dpkg -l | grep mesa ii libegl-mesa0:amd64 19.0.8-0ubuntu0~18.04.1 amd64 free implementation of the EGL API -- Mesa vendor library ii libegl1-mesa:amd64 19.0.8-0ubuntu0~18.04.1 amd64 transitional dummy package ii libgl1-mesa-dri:amd64 19.0.8-0ubuntu0~18.04.1 amd64 free implementation of the OpenGL API -- DRI modules ii libgl1-mesa-dri:i386 19.0.8-0ubuntu0~18.04.1 i386 free implementation of the OpenGL API -- DRI modules ii libgl1-mesa-glx:amd64 19.0.8-0ubuntu0~18.04.1 amd64 transitional dummy package ii libgl1-mesa-glx:i386 19.0.8-0ubuntu0~18.04.1 i386 transitional dummy package ii libglapi-mesa:amd64 19.0.8-0ubuntu0~18.04.1 amd64 free implementation of the GL API -- shared library ii libglapi-mesa:i386 19.0.8-0ubuntu0~18.04.1 i386 free implementation of the GL API -- shared library ii libgles2-mesa:amd64 19.0.8-0ubuntu0~18.04.1 amd64 transitional dummy package ii libglu1-mesa:amd64 9.0.0-2.1build1 amd64 Mesa OpenGL utility library (GLU) ii libglu1-mesa:i386 9.0.0-2.1build1 i386 Mesa OpenGL utility library (GLU) ii libglx-mesa0:amd64 19.0.8-0ubuntu0~18.04.1 amd64 free implementation of the OpenGL API -- GLX vendor library ii libglx-mesa0:i386 19.0.8-0ubuntu0~18.04.1 i386 free implementation of the OpenGL API -- GLX vendor library ii libosmesa6:amd64 19.0.8-0ubuntu0~18.04.1 amd64 Mesa Off-screen rendering extension ii libosmesa6:i386 19.0.8-0ubuntu0~18.04.1 i386 Mesa Off-screen rendering extension ii libwayland-egl1-mesa:amd64 19.0.8-0ubuntu0~18.04.1 amd64 transitional dummy package ii mesa-utils 8.4.0-1 amd64 Miscellaneous Mesa GL utilities ii mesa-utils-extra 8.4.0-1 amd64 Miscellaneous Mesa utilies (opengles, egl) ii mesa-va-drivers:amd64 19.0.8-0ubuntu0~18.04.1 amd64 Mesa VA-API video acceleration drivers ii mesa-vdpau-drivers:amd64 19.0.8-0ubuntu0~18.04.1 amd64 Mesa VDPAU video acceleration drivers coeur-noir@asgard:~$ SuperTuxKart version is : coeur-noir@asgard:~$ dpkg -l | grep supertu ii supertuxkart 1.0~ubuntu18.04.1 amd64 3D kart racing game ii supertuxkart-data 1.0~ubuntu18.04.1 all 3D kart racing game (data) coeur-noir@asgard:~$ IMPORTANT NOTE #1 : I don't have this « flickering problem » on the same computer when booting ubuntu unity 16.04 !!! There, is the same SuperTuxKart version but mesa packages are : coeurnoir@Asgard:~$ dpkg -l | grep mesa ii libegl1-mesa:amd64 18.0.5-0ubuntu0~16.04.1 amd64 free implementation of the EGL API -- runtime ii libegl1-mesa:i386 18.0.5-0ubuntu0~16.04.1 i386 free implementation of the EGL API -- runtime ii libegl1-mesa-drivers:amd64 12.0.6-0ubuntu0.16.04.1 amd64 transitional dummy package ii libgl1-mesa-dri:amd64 18.0.5-0ubuntu0~16.04.1 amd64 free implementation of the OpenGL API -- DRI modules ii libgl1-mesa-dri:i386 18.0.5-0ubuntu0~16.04.1 i386 free implementation of the OpenGL API -- DRI modules ii libgl1-mesa-glx:amd64 18.0.5-0ubuntu0~16.04.1 amd64 free implementation of the OpenGL API -- GLX runtime ii libgl1-mesa-glx:i386 18.0.5-0ubuntu0~16.04.1 i386 free implementation of the OpenGL API -- GLX runtime ii libglapi-mesa:amd64 18.0.5-0ubuntu0~16.04.1 amd64 free implementation of the GL API -- shared library ii libglapi-mesa:i386 18.0.5-0ubuntu0~16.04.1 i386 free implementation of the GL API -- shared library ii libgles1-mesa 18.0.5-0ubuntu0~16.04.1 all transitional dummy package ii libgles2-mesa:amd64 18.0.5-0ubuntu0~16.04.1 amd64 free implementation of the OpenGL|ES 2.x API -- runtime ii libglu1-mesa:amd64 9.0.0-2.1 amd64 Mesa OpenGL utility library (GLU) ii libglu1-mesa:i386 9.0.0-2.1 i386 Mesa OpenGL utility library (GLU) ii libosmesa6:amd64 18.0.5-0ubuntu0~16.04.1 amd64 Mesa Off-screen rendering extension ii libosmesa6:i386 18.0.5-0ubuntu0~16.04.1 i386 Mesa Off-screen rendering extension ii libwayland-egl1-mesa:amd64 18.0.5-0ubuntu0~16.04.1 amd64 implementation of the Wayland EGL platform -- runtime ii libwayland-egl1-mesa:i386 18.0.5-0ubuntu0~16.04.1 i386 implementation of the Wayland EGL platform -- runtime ii mesa-utils 8.3.0-1 amd64 Miscellaneous Mesa GL utilities ii mesa-va-drivers:amd64 18.0.5-0ubuntu0~16.04.1 amd64 Mesa VA-API video acceleration drivers ii mesa-vdpau-drivers:amd64 18.0.5-0ubuntu0~16.04.1 amd64 Mesa VDPAU video acceleration drivers coeurnoir@Asgard:~$ IMPORTANT NOTE #2 : I have also tried newer version of mesa through padoka's ppa ( https://launchpad.net/~paulo-miguel-dias/+archive/ubuntu/pkppa?field.series_filter=bionic ) on 18.04 but it did not change anything. For reference, links to forums where I've asked for help : ⋅ https://discourse.ubuntubudgie.org/t/supertuxkart-in-18-04-flickering-shadows-with-intel-i915/ ⋅ https://github.com/supertuxkart/stk-code/issues/4022 ⋅ ( french ) https://forum.ubuntu-fr.org/viewtopic.php?pid=22142775#p22142775 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1841953/+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