[issue35240] Travis CI: xvfb-run: error: Xvfb failed to start

[STINNER Victor]

New submission from STINNER Victor <vstinner at redhat.com>:

Travis CI fails randomly with "xvfb-run: error: Xvfb failed to start". Example:
https://travis-ci.org/python/cpython/jobs/454776965

whereas the full test suite succeeded.

----------
messages: 329881
nosy: vstinner
priority: normal
severity: normal
status: open
title: Travis CI: xvfb-run: error: Xvfb failed to start

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue35240>
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