https://bugzilla.kernel.org/show_bug.cgi?id=113861
--- Comment #9 from centuryplague@yandex.com --- (In reply to Alex Deucher from comment #7)
Probably the same issue as reported here: https://lists.freedesktop.org/archives/dri-devel/2016-March/102379.html Does reverting dbb17a21c131eca94eb31136eee9a7fe5aff00d9 fix it?
Went a bit out my way to test this faster. I can now confirm reverting this commit on a 4.4.4-based kernel (arch linux-grsec 4.4.4.201603032158-1-grsec) allows startx to start again on my (non-standard) system. I don't know about the other guy.
Thanks I will report on the arch bug. Will this be in 4.4.5?