Quote from: mrgoldy on July 05, 2017, 04:42:49 PM

Quote from: zumpbond2000 on July 05, 2017, 04:38:51 AM

I know this issues was already reported in here, but I haven't seen any answer!
So , I got 2 sticks running on a USB powered hub (48w).

The sticks are running fine at 200mhz, but after some time, the stick number 2 goes zombie!

Has anyone found a solution?

http://farm5.staticflickr.com/4284/34887463404_bda43dddd9_b.jpg

I know mine are very finicky

I have 4 on a superbpag, which is 10W per port
Mine will run at 175MHz for a day with no issues, and then they disable and list as OFF. Then I just restart the .bat and they run again.
voltage is kept the same, frequency doesn't seem to matter. 100 - 175, sometimes they run for 5mins, sometimes over 2 days.

[2017-07-05 12:00:48.203] GSD 0 attempted reset got err:(0) LIBUSB_SUCCESS / LIBUSB_TRANSFER_COMPLETED
[2017-07-05 12:01:57.468] GSD 0: Device failed to respond to restart
[2017-07-05 12:01:57.562] GSD 0 failure, disabling!

Using 32bit XP, laptop

as far as your hub, I would focus on how much per port you can get reliably, not the total power rating of the hub. ZOMBIE may be the cause of too little power per port.
my 175MHz at ~1.45V is around ~7.5-8W per device, and I think I might be pushing it. Mine are also 2nd hand off of eBay, so that could be an issue also.

Well if this is an issue with power of the hub lowering the frequency should fix the problem! I'll try lowering the frequency and check. But it looks like my problem is the same as yours!

I can ran 1 stick on the hub with 300mhz, but I can't run 2 sticks with more than 225mhz