> To emulate rfkill functionality, just write directly to the ec, for ex > to turn on wwan and wifi: > ./ec_access -w 0x3a -v 0x60 > Usecase?Example: I have a wwan card, but I mostly use it for GPS. I can save some power by turning it off without rebooting, while keeping wifi on with:
I'd like to see some real figures on power saved between idle wwan and disabled wwan, I really doubt it's anything noticeable
The hardware button is not safe enough : register 0x3A hasthe H/W Override bitto "enable to control wireless devices even if the global WAN disable switch is ON". Disabling the USB ports through the RCBA registers (nice idea!) would prevent such an override.
Also, it would save more power on the wwan that the hardware button : the wwan module is not fully desactivated since it replies to AT commands
Several persons do not fully trust a wwan module. Physically removing it is the solution suggested. Disabling the usb port would be a simpler solution for those than do not want to physically open their laptop yet do not trust the hardware button due to the override bit.
wwan module is powered unconditionally. So if you don't trust it - remove it. Also none of disables discussed here is irreversible if you're concerned about rogue software.
It seems to have several usecase.
None of them looks valid
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Charles Devereaux -
Vladimir 'φ-coder/phcoder' Serbinenko