The fix (upgrading to HWE) doesn't change the Mesa lib version, so while it could be caused by a newer Mesa interacting badly with the older kernel or xorg, I feel like it seems more like to be kernel or xorg.
18.04 is LTS, and this is somewhat of a trap for those doing CI testing of desktop applications, so I'd be happy to help a little more in trying to identify if a fix can be taken back. A bisect seems like it'd be a huge effort however so I'm ruling that out for now. I still reckon if I knew which process picks up the message that xcb_glx_create_context_attribs_arb_checked sends I could take a closer look and find why it rejects the extension value. Happen to know how to track that? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1902853 Title: Failure to create core GL context with llvmpipe when using GLX_ARB_context_flush_control To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libsdl2/+bug/1902853/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
