Unfortunately, I am on Windows 10.1 and can't help much with running these sticks on linux or other OS's. I restart my PC and cgminer at least once every 24 hours, otherwise my sticks will generally start experiencing performance degradation and may even go zombie (similar to the problems a couple of others seem to posting about). I remember a program from back in the day when USB miners were your only option to mine Bitcoin, called "cgwatcher". The program was made solely to restart cgminer at intervals set by the user. Having said that, I would presume the culprit has something to do with cgminer.
The solution to the problem seems to be the same for everyone - either manually restart cgminer and/or run a script to do it automatically for you. Also, running them at higher frequencies only seems to make matters worse, and may cause working sticks to suddenly go bad. As someone else previously stated, I have also noticed that these NewPac sticks run MUCH cooler than the 2PAC sticks (although I use the same powerful fan for cooling regardless).
Now to be a bit hypocritical. After seeing others run these NewPac sticks at such high frequencies, I began running some very closely monitored tests. The results are simply amazing! Using two Plugable USB3.0 7-Port 60 Watt USB Hubs (two sticks in each hub), I was able to achieve a hashrate of over 100Gh/s per stick. In order to make all four sticks run with stability, it took many voltage adjustments to get it right. All x4 sticks ran smoothly until I purposely shut cgminer down to change the frequencies back to stock. Here is a screenshot of my results:
- click on image to enlarge -
The solution to the problem seems to be the same for everyone - either manually restart cgminer and/or run a script to do it automatically for you. Also, running them at higher frequencies only seems to make matters worse, and may cause working sticks to suddenly go bad. As someone else previously stated, I have also noticed that these NewPac sticks run MUCH cooler than the 2PAC sticks (although I use the same powerful fan for cooling regardless).
Now to be a bit hypocritical. After seeing others run these NewPac sticks at such high frequencies, I began running some very closely monitored tests. The results are simply amazing! Using two Plugable USB3.0 7-Port 60 Watt USB Hubs (two sticks in each hub), I was able to achieve a hashrate of over 100Gh/s per stick. In order to make all four sticks run with stability, it took many voltage adjustments to get it right. All x4 sticks ran smoothly until I purposely shut cgminer down to change the frequencies back to stock. Here is a screenshot of my results:
- click on image to enlarge -