[systemd-devel] systemctl suspend

Mantas Mikulėnas grawity at gmail.com
Wed Nov 11 22:04:09 PST 2015

On Wed, Nov 11, 2015 at 11:13 PM, Steve Abner <pheonix.sja at att.net> wrote:

> I have an issue of the console not turning back on. I have a new build,
> linux 4.2, amd64, systemd, kdbus
> on a mac mini. The first try was hybrib-sleep, failed so tried suspend.
> From journalctl there seems to be
> no related errors, one:

> systemd-networkd[289]: wlan0: DHCPv4 address via
> systemd-network[289]: segfault at 6e00000063 ip 00007f913210409a sp
> 00007fff38450b98 error 4 in libc-2.22.so[7f9132083000+19a000]
>  or with audit enabled
> audit[269]: ANOM_ABEND auid=4294967295 uid=76 gid=76 ses=4294967295
> subj=kernel pid=269 comm="systemd-network"
> exe="/lib/systemd/systemd-networkd"
> systemd-network[269]: segfault at 6e00000063 ip 00007f4d2bcb909a sp
> 00007ffedf852108 error 4 in libc-2.22.so[7f4d2bc38000+19a000]

That's an unrelated bug in networkd.

>  Once awaken from sleep, out journal to file, reboot. This regains
> console. Turning console monitor off/on
> has no effect. Also there is no dev/pts/ptmx as this is terminal only,
> working out bugs before adding

/dev/pts/ptmx *is* about terminals; it has nothing to do with graphics nor
display managers. But its primary location is just */dev/ptmx* – not all
systems have it under /dev/pts/.

> display_manager. Maybe something in lunix config is not set to work with
> systemd suspend? I know of
> modules or builds not informing about dependencies, 4-5 days of builds to
> get wifi working because of it.
>   Thanx

systemd *does not have* its own suspend mechanism, it uses only what the
kernel itself provides.

Run `echo mem > /sys/power/state`; if that doesn't work, then you have a
kernel problem.

Mantas Mikulėnas <grawity at gmail.com>
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