2012/9/18 Aleksander Morgado <aleksan...@lanedo.com> > Hey Dan and Marius, > > > > >> Power Up = enabled > >> Power Down = disabled > >> > >> So we already have those states in ModemManager via the Enable() method > >> and the modem states. It's just that not all devices actually implement > >> the low-power mode when disabling, partially because we're not always > >> sure of the side-effects. > >> > > > > The problem here isn't that we don't have a safe power-down command; the > > problem is that even if we have it, we don't use it just after plugging > > in the modem: > > initialized -> locked -> disabled > > > > But for that 'disabled' state we didn't run the power-down command even > > if we have it, so the radio interface may be powered on there. That's > > the thing to fix by running the disabling sequence just after > > initialization. If there is no default power down command, then we would > > run the disabling sequence but without any power down command, so no big > > deal. > > > > The attached patch runs just a new power-down step during the modem > initialization, to ensure it starts in low power mode. Adding a new step > to run power-down instead of running the whole disabling sequence seemed > a better option, as the disabling sequence really assumes we were > previously enabled. Note that this patch just re-uses the power-down > implementation given in each plugin, which we previously used only > during the disabling sequence. > > Given that it's quite a big change, can you guys try it with some of the > modems that we know have given issues before with these things? Thinking > on Sierra modems specifically here. I've got a Wavecom modem which also > had issues with CFUN (e.g. rebooting on CFUN=1 if it was already in > CFUN=1), but won't be able to test it until Friday. >
Tested my ZTE MF820D and seems to work nice. Would this be possible to backport to MM_06? Btw, is this expected?: model: '+CGMM: "MF820D"' -- Marius
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