On 03/12/2012 11:56 PM, George R Goffe wrote:
Did this configuration ever work well for you in the past and did the problem change with any kind of kernel upgrade or reconfiguration of the drives or cabling? Unfortunately I've seen this problem way too many times, especially with multiport Jmicron controlers such as the one that you have. I've occasonally been able to solve it by changing or reseating the cabling. Also make sure the drives are firmly seated in the docking station. On some systems no matter what I do, if I do simultaneous IO to more than one USB drive I get errors like this (I know you say it is not IO related). In some cases it works better to use only a single drive per controller and plug a second drive into a port on a different usb controller if your system has more than 1. If it doesn't work in one dock socket, try the other. Some of the controllers in these multiport USB peripherals just don't work well with linux drivers or with the usb controller on a particular computer. I wish I had a better answer for you, but I think this is a pretty common problem with this type of commodity hardware. I have some systems where it seems to work just fine and others where no matter what I do it won't work. Nataraj |
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