I tried this, but it didn't help for me. I don't have wired LAN in use
(eth0 is not connected), so I also tried to adapt change for wlan0, but
ethtool doesn't give any info for wlan0 and setting wol mode doesn't
work:
$ sudo ethtool wlan0
Settings for wlan0:
No data available
Based on network man
I have same issue with Macbook 4,1 (Early 2008).
I noticed same symptom as Martin (activated -> unmanaged after resume)
and looking network manager code (do_sleep_wake() in nm-manager.c) it
seems to be related to wake on lan stuff.
So, I modified nm_platform_link_get_wake_on_lan() to always retur
