Re: nmcli radio off connected to ModemManager power state low

[Carlo Lobrano <c lobrano gmail com>]

> ​The problem is that if the modem is totally powered off with a CFUN=0,

​> ​

then how do we power it back on? CFUN=4, where the modem is still

​> ​

alive but with radio off is already more than enough in most cases.

> Why do you need the modem to be totally off?

In power low I could expect that the modem goes in some kind of power saving configuration but still connected to the network, it really depends on the modem capabilities, and​ when rfkill is not available, the modem is only set in power low, which may not be the same as radio off.​

​I totally understand the problem though, modems that use CFUN=0 to power off are not​ listening to any command to put them ON again.

I will look better to rfkill, but I still see a possible misunderstanding between power low intended as radio off and power low intended as power saving.​

​Carlo

​

On 13 March 2016 at 12:26, Aleksander Morgado <aleksander aleksander es> wrote:

On Sun, Mar 13, 2016 at 10:28 AM, Carlo Lobrano <c lobrano gmail com> wrote:
>
> thank you, it is more clear now. I will check in my system for rfkill.
> One more question, do you think it will be feasible for NM to check whether
> rfkill is available and, if not, to set the modem in power off in place of
> just disabling it?

The problem is that if the modem is totally powered off with a CFUN=0,
then how do we power it back on? CFUN=4, where the modem is still
alive but with radio off is already more than enough in most cases.
Why do you need the modem to be totally off?

--
Aleksander
https://aleksander.es