Testing with 4.14-rc5 I can enter hybrid-sleep with low memory usage but
the system hangs after blanking the screen and displaying "Snapshotting
system". In this case there are no log entries for the failure, ie the
journal is truncated after initiating hybrid-sleep and then
disconnecting the wifi (on NetworkManager receiving a suspend signal).
It seems plausible that this is the same failure mode but with different
log entries because of timing/memory differences, so I am marking the
issue kernel-bug-exists-upstream. At any rate *some* kernel-bug-exists-
upstream.
Not relevant to this issue, I think:
- the default 16.04.3 apparmor settings disabled /sbin/dhclient and
/usr/sbin/cups-browsed with kernel 4.14rc5 - I renamed /etc/apparmor.*
and rebooted
- the system log showed repeated timeout crashes in inteldrm like that
attached below.
** Tags added: kernel-bug-exists-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1724265
Title:
Unexpected memory allocation failure in hibernation snapshot (swsusp)
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