On Thu, Jun 14, 2018 at 11:56:03PM -0700, Josh Triplett wrote: > reassign 901497 > retitle 901497 Xwayland: hangs spinning on write and SIGALRM > thanks > > After further investigation, I can reproduce this with Mesa 18.0.5-1 as > well, just not as often. > > After encountering this issue, I managed to switch to a text console, > and found that Xwayland was using 100% CPU. strace of the running > Xwayland produced the attached strace, in which Xwayland appears to be > spinning, running a zero-byte writev, and periodically processing a > SIGALRM. Other threads appear to be blocked on futexes.
Forgot to attach the strace, sorry. Will provide one again next time it happens, but it consisted entirely of "write(14, [], 0) = 0" on one thread.
