Reducing power consumption of Rubik Pi

Other OS Support Other OS-related topics
1

The idle power draw of the RubikPI (as measured at the USB-C input) is about 1.7w with nothing plugged in other than the serial terminal, whereas for the SoM it is just 400mw as measured by polling the following:

/sys/class/power_supply/qcom-battmgr-bat/voltage_now
/sys/class/power_supply/qcom-battmgr-bat/current_now

The 400mw is close to the number for the QCS6490 reported by Qualcomm, so 1.3w is being consumed elsewhere. Could you please let me know if there is an easy way to reduce the power draw? I don’t need ethernet or HDMI, so maybe these could be switched off?

2

May I kindly confirm which software version you are currently using—Linux, Debian, or Android?

3

I’m using Qualcomm Linux 1.5

4

Should you wish to disable ethernet and hdmi out, you may remove the vreg_usb_eth_1p8 and vreg_lt9611_3p3 nodes from the source code.