** Changed in: network-manager (Ubuntu)
Status: Confirmed => Fix Committed
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https://bugs.launchpad.net/bugs/1781597
Title:
[SRU] WoWLAN settings are not supported
Status in network-manager package in Ubuntu:
Fix Committed
Status in network-manager source package in Bionic:
Triaged
Bug description:
[Impact]
WoWLAN lets us wake up the system by sending wake packages over the
wifi connection. This is something requested by some OEM projects, for
bionic server images.
NM 1.12 supports configuring this feature, so this can be achieved by
backporting that support to 1.10 (bionic version). These are the MPs
for cosmic and bionic:
https://code.launchpad.net/~alfonsosanchezbeato/network-manager/+git/network-manager/+merge/349468
https://code.launchpad.net/~alfonsosanchezbeato/network-manager/+git/network-manager/+merge/349465
[Test Case]
First, the wifi card must support WoWLAN. This can be checked by
running
$ iw phy
and searching for "WoWLAN support:" in the output. If it is supported,
with the patch applied a connection configured with wowlan can be
created with:
$ sudo nmcli d wifi connect <ssid> password <password>
$ sudo nmcli c modify <ssid> 802-11-wireless.wake-on-wlan 8
$ sudo nmcli c down <ssid>
$ sudo nmcli c up <ssid>
We can check with 'iw' that WoWLAN is active for the connection:
$ iw phy phy0 wowlan show
WoWLAN is enabled:
* wake up on magic packet
In this case we have configured the connection to wake up the system
when a 'magic' packet is received. We can then suspend the system with
$ sudo systemctl suspend
And we should be able to wake the system from another device with the
command
$ sudo etherwake -i <wifi_iface> <destination_MAC_address>
[Regression Potential]
Although the patch is not especially small, it is a backport of
changes that have been merged upstream, with very little modifications
to make it compile in 1.10. It is also a rather isolated feature that
should not conflict with existing ones. The feature will be activated
only if configured from the command line, so the risk of regressions
should be small. Note also that the patch will be removed as soon as
Ubuntu moves to NM 1.12.
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