[Bug 1248968] perl-Test-NeedsDisplay-1.07-11.fc24 FTBFS randomly

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1248968



--- Comment #3 from Petr Pisar <ppisar at redhat.com> ---
I cannot reduce it to xvfb-run only with:

$ while (xvfb-run '/bin/true'; xvfb-run '/bin/true'); do :; done

Perhaps because the tests kill xvfb-run before it reaches end.

However putting "wait" just after kill in the xvfb-run helps. I think xvfb-run
should terminate after the Xvfb terminates.

Another workaround is to edit Test::NeedsDisplay to call xfbv-run with "-a".
Not only it fixes the issue with overlapping Xvfb's lock file, it will also
allow to use Test::NeedsDisplay in parallel. Without the option each Xvfb binds
to display :99 which leads to failures.

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