After seeing you comment last night I did an apt-get purge of mesa- vulkan drivers and vulkan-utils then ran apt-get autoremove to remove libvulkan1 verified that all vulkan related files were gone then rebooted and reinstalled them.
Mesa upgraded fine to 17.2.2 this morning but the problem remains. $ apt-cache policy mesa-vulkan-drivers mesa-vulkan-drivers: Installed: 17.2.2-0ubuntu1 Candidate: 17.2.2-0ubuntu1 Version table: *** 17.2.2-0ubuntu1 500 500 http://us.archive.ubuntu.com/ubuntu artful/universe amd64 Packages 100 /var/lib/dpkg/status vulkan-smoketest WARNING: radv is not a conformant vulkan implementation, testing use only. WARNING: radv is not a conformant vulkan implementation, testing use only. Segmentation fault from kernel log: Oct 5 10:22:17 Tardis-1 kernel: [ 4445.683796] vulkan- smoketes[4128]: segfault at 0 ip 00007f43321ef924 sp 00007ffdee3530a0 error 6 in libvulkan_radeon.so[7f4332183000+18b000] from syslog: Oct 5 10:22:17 Tardis-1 kernel: [ 4445.683796] vulkan- smoketes[4128]: segfault at 0 ip 00007f43321ef924 sp 00007ffdee3530a0 error 6 in libvulkan_radeon.so[7f4332183000+18b000] -- 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/1720890 Title: vulkan-smoketest segfaults steam vulkan games segfault To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1720890/+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