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Re: systemd process(es) consuming CPU when laptop lid closed



On 10/15/2017 10:31 AM, Michael Biebl wrote:
> Am 14.10.2017 um 21:48 schrieb Glen B:
>>    295 root      20   0    7448   4432   3992 R 41.2  0.9   0:54.81 systemd-logind
>>    298 message+  20   0    6260   3636   3268 S 17.6  0.7   0:17.12 dbus-daemon
> That looks like there is a huge amount of dbus messages sent.
> Can you run dbus-monitor --system (as root) to see what those messages are?

That's an interesting command, lots of information was spat out. Here's 
an excerpt of what was put out:

----
  uint32 0
error time=1508114297.985967 sender=:1.0 -> destination=:1.1 
error_name=org.freedesktop.systemd1.UnitMasked reply_serial=26352
    string "Unit suspend.target is masked."
signal time=1508114297.986032 sender=:1.0 -> destination=(null 
destination) serial=52814 path=/org/freedesktop/systemd1; 
interface=org.freedesktop.systemd1.Manager; member=UnitNew
    string "suspend.target"
    object path "/org/freedesktop/systemd1/unit/suspend_2etarget"
signal time=1508114297.986058 sender=:1.0 -> destination=(null 
destination) serial=52815 path=/org/freedesktop/systemd1; 
interface=org.freedesktop.systemd1.Manager; member=UnitRemoved
    string "suspend.target"
    object path "/org/freedesktop/systemd1/unit/suspend_2etarget"
signal time=1508114297.991185 sender=:1.1 -> destination=(null 
destination) serial=26353 path=/org/freedesktop/login1; 
interface=org.freedesktop.login1.Manager; member=PrepareForSleep
    boolean true
method call time=1508114297.992516 sender=:1.1 -> 
destination=org.freedesktop.systemd1 serial=26354 
path=/org/freedesktop/systemd1; 
interface=org.freedesktop.systemd1.Manager; member=StartUnit
    string "suspend.target"
    string "replace-irreversibly"
method call time=1508114297.993237 sender=:1.0 -> 
destination=org.freedesktop.DBus serial=52816 
path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; 
member=GetConnectionUnixUser
    string ":1.1"
method return time=1508114297.993292 sender=org.freedesktop.DBus -> 
destination=:1.0 serial=13188 reply_serial=52816
----

If I'm understanding this correctly, it looks like it's trying to 
suspend but is somehow getting confused...

On 10/15/2017 4:52 PM, rhkramer@gmail.com wrote:
> <Top posting intentionally>
>
> There was a recent thread where the symptom, in one sense, was somewhat
> similar--on a two CPU system, one CPU was using 100% of one CPU with the lid
> closed.  IIUC, the problem was due to lightdm-gt (or some sub-program).
>
> Here are the headers from the last message in that thread:
>
> Re: Debian 9.2 amd64 Xfce lock screen -> 100 %CPU by lightdm-gt+
> From: David Christensen <dpchrist@holgerdanske.com> (resent from debian-
> user@lists.debian.org)
>    To: debian-user@lists.debian.org
>    Date: Thu Oct 12 12:41:46 2017
>
> Maybe it is worth looking at that thread.
I took a look at the thread you referred to, but I'm afraid we're 
looking at different issues... I don't have any desktop-GUI-related 
things installed (at least, I'm not supposed to).

Thank you both for your responses!

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