https://bugs.freedesktop.org/show_bug.cgi?id=99195 --- Comment #9 from mirh --- It wouldn't hurt if you could confirm whether downgrading to mesa 12 actually makes the issue disappear or not. For as much, imo, locks are more likely to do with something in kernel. Stretch has 4.9.. Perhaps you could try one of the latest 4.12rcs I guess? -- You are receiving this mail because: You are the assignee for the bug.