Block erupter issues

[plunderisley]

I got 12 block Erupters that I bought back in Aug. they were working fine till a few weeks ago. I can't figure out what's wrong with them. I had them plugged into a Raspberry Pi running cgminer.
When I try to run it now, I get a error ffffff or error 000000. If I put in each miner individually they work just fine (tested each of them for a hr+ and no issues).
I tried a different PC with the same usb hubs and same issue
I tried the same PC with a new hub and same issue

Any thoughts on what could be going on? If it was the miners, then they wouldn't be hashing. If it was the usb hub, then replacing it would of fixed the issue. If it was the program then a new pc or usb would fix it....

[madcratebuilder]

I got 12 block Erupters that I bought back in Aug. they were working fine till a few weeks ago. I can't figure out what's wrong with them. I had them plugged into a Raspberry Pi running cgminer.
When I try to run it now, I get a error ffffff or error 000000. If I put in each miner individually they work just fine (tested each of them for a hr+ and no issues).
I tried a different PC with the same usb hubs and same issue

The psu for the hub could be dieing.  I've had two or three slowly die and it generates all kinds of problems.  You must have .5 amp at each port.

I tried the same PC with a new hub and same issue
Any thoughts on what could be going on? If it was the miners, then they wouldn't be hashing. If it was the usb hub, then replacing it would of fixed the issue. If it was the program then a new pc or usb would fix it....

The new hub had sufficient power for each stick?
Burn a new .img on a new sd card for the Pi, cards have a limited lifespan.

I gave up on the damn wall warts and the problems and heat they generate.  I hacked a psu to use the 5v rail to power most of my hubs, little more noise and lot less heat.

[soy]

I got 12 block Erupters that I bought back in Aug. they were working fine till a few weeks ago. I can't figure out what's wrong with them. I had them plugged into a Raspberry Pi running cgminer.
When I try to run it now, I get a error ffffff or error 000000. If I put in each miner individually they work just fine (tested each of them for a hr+ and no issues).
I tried a different PC with the same usb hubs and same issue

The psu for the hub could be dieing.  I've had two or three slowly die and it generates all kinds of problems.  You must have .5 amp at each port.

I tried the same PC with a new hub and same issue
Any thoughts on what could be going on? If it was the miners, then they wouldn't be hashing. If it was the usb hub, then replacing it would of fixed the issue. If it was the program then a new pc or usb would fix it....

The new hub had sufficient power for each stick?
Burn a new .img on a new sd card for the Pi, cards have a limited lifespan.

I gave up on the damn wall warts and the problems and heat they generate.  I hacked a psu to use the 5v rail to power most of my hubs, little more noise and lot less heat.

Every once in a while you might do a "df" on the RPi running cgminer.  I found my card filling up with stuff in a donations folder hash.

[plunderisley]

I tried a new install of Raspbian and no luck.
I tried it on my laptop (running Debian) and I can get max 2 block erupters per usb port. Logical thought is the usb hubs are bad, but I just replaced them with brand new ones.

[-ck]

I tried a new install of Raspbian and no luck.
I tried it on my laptop (running Debian) and I can get max 2 block erupters per usb port. Logical thought is the usb hubs are bad, but I just replaced them with brand new ones.

Then it's probably the new ones at fault. They probably don't deliver the power of your old one(s).

[Ruzka]

I still think your hubs are to blame. Are the new ones the same as the old ones?

[plunderisley]

I still think your hubs are to blame. Are the new ones the same as the old ones?

Yup. Same ones.