Would it be possible for you to do a kernel bisection?
First, find the last good -rc kernel and the first bad -rc kernel from
http://kernel.ubuntu.com/~kernel-ppa/mainline/
Then,
$ sudo apt build-dep linux
$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
$ cd linux
$
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Tags added: kernel-fixed-upstream
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https://bugs.launchpad.net/bugs/1785464
Title:
Computer fails to wake up
Installed 4.18-rc8, will let you know...
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https://bugs.launchpad.net/bugs/1785464
Title:
Computer fails to wake up from sleep, about 10% of attempts
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Did this issue start happening after an update/upgrade? Was there a
prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.18