I realise this is probably unrelated to the bug then, I think my
problem lies within the Intel graphics driver somewhere in the kernel.
But for the benefit of anyone searching, I have found a workaround for
my version of the problem...
For me it only freezes on suspend if X is showing at the time. If it's on any
of the virtual terminals, it's fine. So I created /etc/pm/sleep.d/5_crashfix
containing:
#! /bin/sh
case $1 in
suspend|suspend_hybrid|hibernate)
/bin/chvt 1
;;
resume|thaw)
/bin/chvt 7
;;
esac
Then chmod +x to the 5_crashfix file.
This changes to VT1 on suspend, and changes back to X on resume, which
bypasses the bug.
Unfortunately I don't know "what I'm doing" well enough to try and
report anything upstream, I think it's too vague for them to do anything
useful with.
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https://bugs.launchpad.net/bugs/1299790
Title:
[Apple Inc. MacBookAir4,1] suspend/resume failure [non-free: wl]
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