Comment # 7 on bug 108037 from Öyvind Saether

Looks like this is still a problem with 4.19.0-rc6-ChaeKyung-April. Happened
when turning monitors off and leaving for hours and coming back & turning them
on again.

If that what's required to make sure this triggers then bisecting will take
ages. Last time I tried I got a irrelevant result which is probably because it
doesn't happen if I turn them off and very soon turn them on again. Also didn't
seem to happen with 4.19.0-rc5 but I didn't try turning them on and leaving for
a few hours and turning them on when I got the impression that one works fine.
Perhaps it doesn't.