-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Somebody in the thread at some point said: | Andy Green wrote: |> I agree there's no need for it, but is it true it won't consume anything |> at all when uninitialized? It's still hooked up to 1.8V and 3.3V with |> no real off switch, so it will consume the odd picojoule or hundred or |> more entirely at the whim of the firmware. | | Okay, and a few electrons will probably tunnel through some quantum | walls to ground out of sheer spite as well ;-) | | But not loading the modules should be the next best thing to | physically removing the WLAN board, in terms of not burning power.
I'd think so too but we don't actually know it --> | I'm doing some power consumption measurements of the various states | to make sure that nothing "leaks", so I hope I can put numbers to | the various levels of activation and tell whether it makes sense to | optimize by, say, holding the module in reset or not loading the | SDIO stack. (I don't expect either to make much of a difference, but | we'll see.) That'd be worthwhile, great. I think someone looked at this in .tw about a year ago but I never really read about what they found. | Right now, my main problem is that I get a base consumption in | suspend with a "naked" userspace of about 145mA at 4.0V, with | noise/drift in the 1-2mA range. I can bring it down to ~100mA by | killing regulators and such, but there's still something big there | that shouldn't be. I just hope it's not the Glamo somehow escaping | suspend ... Glamo is also permanently powered anyway, but it doesn't take 145 mA :-) I would guess it is either WLAN or GSM, maybe pop the SIM if it is still in there. Balaji had auditing regulators that were still up on his list. - -Andy -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iEYEARECAAYFAklvi20ACgkQOjLpvpq7dMqJxgCggeEfdV02v1PczbYsT93t+NsB EjgAnj9KQc8U8UO28QTtTbXHiKi/wM5q =Nl1L -----END PGP SIGNATURE-----
