Comment 4 for bug 117138

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GlenB (glenbirkbeck) wrote :

I have the same problem with an external USB2 Iomega hard disk under feisty. Bulk copying from an NFS share on a different machine causes it to fail in the same way, especially when copying lots of small files.

My setup is AMD based, quite old, based on an AMI BIOS. Onboard USB is v1.1, so this is via a USB2 PCI card (VIA based I think)

It seems to be the same problem reports here - https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/61235 - something to do with caching or some kind of buffer overflow.

Doing a It seems to be the same problem reports here - https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/61235

Using the command "sudo modprobe -r ehci_hcd" before connecting the drive seems to resolve the error but I am not sure about how it has affected speed. I havent one any time trials, but left it copying data yesterday and it took about 12 hours to do 60GB of data, which, by my (dubious) reckoning, works out around 11Mb per sec