what the hell is this ?? i get this on some miner:Apr 29 18:24:05 raspberrypi user.warn kernel: [1077388.375790] w1_slave_driver 28-000005cc638d: Read failed CRC check
Apr 29 18:28:48 raspberrypi user.warn kernel: [1077672.145775] w1_slave_driver 28-000005cc638d: Read failed CRC check
Apr 29 18:29:02 raspberrypi user.warn kernel: [1077685.525716] w1_slave_driver 28-000005cc638d: Read failed CRC check
Apr 29 18:29:15 raspberrypi user.warn kernel: [1077698.905789] w1_slave_driver 28-000005cc638d: Read failed CRC check
Apr 29 18:29:28 raspberrypi user.warn kernel: [1077712.318571] w1_slave_driver 28-000005cc638d: Read failed CRC check
Apr 29 18:29:42 raspberrypi user.warn kernel: [1077725.735686] w1_slave_driver 28-000005cc638d: Read failed CRC check
Apr 29 18:29:55 raspberrypi user.warn kernel: [1077739.135701] w1_slave_driver 28-000005cc638d: Read failed CRC check
Apr 29 18:35:24 raspberrypi user.warn kernel: [1078067.485718] w1_slave_driver 28-000005cc638d: Read failed CRC check
I get these messages as well, but has no noticeable impact on performance...
dont know but....
it looks like the errors you would get on a hard drive, up on unpacking a file that has some damage to it...
i'm not so technicel to analyse this error -> but 2 minners shut down -> and i have to restart the cgminer by hand....
its not good, i cant sit 24/7 i front of the miner's... grml.... is there an solution ?
If i am right...
The errors can mean 2 things...
1, you have a bad sector on your disk, on your raspberrypi, disk: w1_slave_driver 28-000005cc638d
If this is the case, the solution is normal to run scandisk on your drive, let it block out or sort the bad sectors, re-install any damage data when done (this is for HDD disk only, not SSD disk)...
2, you only have damage files on your raspberrypi, disk: w1_slave_driver 28-000005cc638d
If this is the case, the normal solution is to re-install all data to disk to make sure all corrupted files are restored...
Both are, for most part, do to the disk get bump/shocks on handling, transport or other moving it around (or age, but its all suppose to be new stuff, so...) (Also heavy magnetic fields can do this, but that's very unlikely)
This is no problem on a normal computer, running normal OS (like windows or linux)...
But on your miner.... might be a problem, if you did not back up the disk on the raspberrypi device before use (not the miner but your control device or what ever you whona call it),
I have no miner OR raspberrypi device so i cant see what software or hardware they provide or what disk partition installations they might have made....
(knowing bitmine.ch's normal work, my guess is their is no partition installation on it and it just a raw OS on a single partition, that means you need new softwae from other location then the disk it selvf, aka; backup/re-instal disks or other medium)
Their was a firmware update at some point, you might be lucky to be able to reinstall using that some how...
But its also only if i am right in my view of the problem;) but i am 90 % sure that that's is the problem
Also if i am right, it is the raspberrypi's disk their is the problem, NOT the miner, 2 other fixes to this, cut be, to replace the device completely or to run your miner by a computer, not the raspberrypi's device you bought as extra device...
I know that its crappy solutions, but unless you have the software to re-install the disk on the raspberrypi device, it can be a big problem doing any thing else about it;)
Sorry