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NetworkManager inactive after suspend/resume
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Joined: 05 Jul 2013
Posts: 3
Location: Toronto, ON

PostPosted: Mon Jul 08, 2013 11:27 am    Post subject: NetworkManager inactive after suspend/resume Reply with quote

Subject says it all. If I suspend my laptop, nm-applet disappears from my systray and I lose my connection to the network. /etc/init.d/NetworkManager status says "inactive". /etc/init.d/NetworkManager restart brings nm-applet back to my systray and it connects to my network, but it's quite annoying to have to escalate privileges like that to restore a service that apparently I can shut down as a user.

I'm not the only one to experience this, but none of the suggestions in that thread helped. Any help you could provide would be greatly appreciated.
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Joined: 01 Jul 2004
Posts: 7413
Location: almost Mile High in the USA

PostPosted: Thu Jul 18, 2013 11:06 pm    Post subject: Reply with quote

Curious as to what Ethernet adapter you're using? And hardware (motherboard, etc.)? What kernel?

My only guess is that the driver does not suspend/resume that device properly.

My machines generally suspend/resume network interfaces fine... but most of the time it's the wifi that's the interface I'm using.

As far as I know: hardware ethernet drivers that have worked for me (S3 suspend):
sky2 (foxconn), tg3 (dell), atl1c (eeepc), most r8169 (hp, gigabyte). All these are onboard adapters.

I haven't tested my other ethernets, mostly because they aren't in machines that support S3. However I have tested some that do survive S4 hibernate:
e100, 3c59x (both PCI adaptors)

Only thing I can think of at the moment relates to the wifi on my eeepc, which ASPM of PCIe of wifi to make it show up again... I forget the details...
Intel Core i7 2700K@ 4.1GHz/HD3000 graphics/8GB DDR3/180GB SSD
What am I supposed watching?
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Joined: 26 Dec 2004
Posts: 3256

PostPosted: Fri Jul 19, 2013 5:46 am    Post subject: Reply with quote

You can bring the network down during suspend and start it back up on resume. That will take care of networkmanager.

The other option is to send a hibernate command to networkmanager on suspend and a resume command when you resume. This has to be done as root and the commands are dbus commands. Like this
dbus-send --system --dest=org.freedesktop.NetworkManager /org/freedesktop/NetworkManager org.freedesktop.NetworkManager.sleep

dbus-send --system --dest=org.freedesktop.NetworkManager /org/freedesktop/NetworkManager org.freedesktop.NetworkManager.wake

emerge --quiet redefined | E17 vids: I, II | Now using kde5 | e is unstable :-/
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Joined: 28 May 2003
Posts: 646
Location: granada, spain

PostPosted: Sat Jun 14, 2014 1:54 pm    Post subject: Reply with quote

i've this problem after switching from sys-power/upower to sys-power/upower-pm-utils and the above dbus command has no effect.
what works is issuing a networkmanager restart after resume by placing a script into /etc/pm/sleep.d, but since this is just a hack, i'm wondering if there is any more orthodox way (eg. tuning some parameter) to solve this issue...
thank you.
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