Hello,
I've been running a ML2 for about 2 days, pretty much at stock settings (upped freq to 620) on a macbook pro usb3 port.
It has been running stable for that time, but suddenly the hashrate dropped to 2.1 - 2.5 MH, it used to be stable at 3 - 3.2 MH.
Am I missing something right here? My setup didn't change (no other devices attached).
For stable 3 MH you will need more than 500 mA. Can macbook pro usb port suplly current more than that?
I have no idea, I can only tell what I saw these last 2 days.
This is what system info says
Current Available (mA): 500
Current Required (mA): 100
Extra Operating Current (mA): 0
Apple docs:
Apple computers equipped with USB 3 provide up to 900 mA (milliamps) at 5 V (Volts) to most Apple USB peripherals as well as all third-party USB peripherals that comply with USB specifications.
https://support.apple.com/en-us/HT204377According to docs, it can provide from 500 mA up to 1100 mA, depends how much attached device is in some way compatible with oem apple devices. Try to lower clock speed @540... Dropping hasrate is usually all about lack of juice from usb port...
EDIT: 620 is not available clock speed listed on first page.