I've tried to connect the external WD My Passport directly to Raspberry Pi 2.0, but experienced some issues.
max_usb_current=0 HDD is running (but with some strange ticks) but is not detected. In case when I set
max_usb_current=1 HDD is working OK. But I see some strange artifacts on display. Small ~20px*20px square filled with RGB radial gradient (same as during NOOBS boot) appears in upper right corner. I've noticed that it appears only when HDD read operation occurs and is on top of anything. Does anybody know how to fix it?
I'm using 12W (2.4A) Apple iPad power supply. It happens on any Raspberry Pi distros (OSMC and Raspbian). Only Logitech wireless keyboard adapter is connected to USB port beside HDD.
P.S. When I'm using Y cable and connected HDD to extra power source issue disappears no matter whether
max_usb_current set to 1 or 0.