external hard drive weirdness

Kerry Hoath kerry at gotss.net
Mon Jun 24 22:07:40 EDT 2013


On 25/06/2013 11:46 AM, Adam Myrow wrote:
> I recently purchased a Seagate Backup+ 1TB USB external hard drive.  
> It works perfectly if I connect it after Linux is booted, but if it is 
> plugged in when the computer first boots, it never gets recognized. 
> Linux produces an error containing "device descriptor read/all, error 
> -110."  I've searched Google for this error, but haven't found 
> anything about it.  The drive also is not seen by Windows unless it is 
> plugged in after the boot starts.  Before I assume the drive is 
> defective, I wanted to check if anybody else has ran into this.
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It is a problem with the way your USB chipset decides to power stuff up.
You could reset the USB hub the device is on under software control then 
plug it in or plug it after boot.

USB cards with a different driver might also make a difference. I have a 
couple of these expantion drives i'll test one out on a Linux box see if 
I see the same behaviour.

Regards, Kerry.



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