[Mbm-devel] F5521gw wake on wireless

[Jean P. <jea...@fr...>]

Dear all,
I am currently working on a project using wake on wireless features of
the Ericsson F5521gw modem under Linux OS.
I have patched NetworkManager, adding a 'CanWakeUp' property on
interfaces which prevent NetworkManager to disconnect an interface when
sleeping if this property is True.
I also set the 'wakeup' property of the given modem in sysfs to
'enabled'. 
Modem needs to be powered on through 3.3Vaux pin of the mini PCIe bus
when in ACPI S3 mode.

Does anyone now how to ensure modem is powered on ? Are there existing
mechanism on Linux kernel for controlling this ?
The modem is in Lenovo Thinkpad T420 which is supposed to support this
feature but BIOS does not give any information about this.


Thank you very much for your answer.

Regards,
Jean