** Description changed: + [Impact] + After patching Mesa with some driver updates, Chromium/Brave started seeing corrupt graphics. This was due to GPU acceleration being enabled in the browser by default now, and the old GPU shader cache is invalid in some ways and the browser is not able to recognize that the driver has changed, since the upstream version string hasn't changed. This is shown for instance with 'glxinfo -B' or under 'chrome:gpu' from the browser. + + The fix is to make the upstream VERSION to have the full packaging + version, this will then be used for the core profile version string as + well. + + + [Test case] + + - run stock jammy, install brave-browser from brave.com, launch brave- + browser, check that 'brave://gpu' shows things are accelerated, then + exit the browser + + - enable proposed, install libgl1-mesa-dri et al + + - launch brave-browser again, verify that gfx are not corrupted and + brave://gpu is showing acceration being used + + with the pulled update, graphics would be severely corrupted + + + [Where things could go wrong] + There could be apps that expect the Mesa version string to only contain a.b.c, and break in some ways when that's no longer the case. + + + -- + After today's Ubuntu 22.04 Mesa upgrades many of our users reported problems viewing graphics when using Google Chrome (Stable). The Mesa upgrades we installed were: [UPGRADE] libegl-mesa0:amd64 22.2.5-0ubuntu0.1~22.04.1 -> 22.2.5-0ubuntu0.1~22.04.2 [UPGRADE] libegl1-mesa:amd64 22.2.5-0ubuntu0.1~22.04.1 -> 22.2.5-0ubuntu0.1~22.04.2 [UPGRADE] libgl1-mesa-dri:amd64 22.2.5-0ubuntu0.1~22.04.1 -> 22.2.5-0ubuntu0.1~22.04.2 [UPGRADE] libgl1-mesa-glx:amd64 22.2.5-0ubuntu0.1~22.04.1 -> 22.2.5-0ubuntu0.1~22.04.2 [UPGRADE] libglapi-mesa:amd64 22.2.5-0ubuntu0.1~22.04.1 -> 22.2.5-0ubuntu0.1~22.04.2 [UPGRADE] libglx-mesa0:amd64 22.2.5-0ubuntu0.1~22.04.1 -> 22.2.5-0ubuntu0.1~22.04.2 [UPGRADE] mesa-vulkan-drivers:amd64 22.2.5-0ubuntu0.1~22.04.1 -> 22.2.5-0ubuntu0.1~22.04.2 We documented the problem in AskUbuntu before we realized it was probably related to Mesa, so wanted to link to that report here: https://askubuntu.com/questions/1469116/since-23-may-2023-ubuntu-22-04-mesa- updates-chrome-wont-display-website-graphi There are several useful pointers and bypasses listed in that AskUbuntu link (one being to remove affected users' GPUCache directories, which does not destroy their profiles and seems to work in many but not all cases). Not sure if this is an issue with Mesa or Chrome or specific machine graphics or an interaction between them.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/2020604 Title: After Mesa upgrades, Chrome won't show graphics To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/2020604/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
