I am having some problems attempting to use a USB 2.0 drive enclosure (SanMax HD-337-U2) under linux. More specifically, the external drive is recognized fine, it's contents able to be listed fine. However, when I attempt to copy data from the drive, it will copy a screen or so of files and then hang for an extremely long time. This may continue a few times -- copy some files and then hang -- until the device apparently times out.
Your descriptors showed this is a GeneSys device. For reasons unclear to any of us, that's what those devices do when they talk to Linux. All the evidence is that those adapters are at fault, and they just stop talking to Linux ... sometimes even locking up hard enough that a USB reset doesn't recover them (power cycling works).
My advice for now is to get a different drive enclosure, one that doesn't use GeneSys chips. Unless you can do some low-level USB debugging, and create a patch that'll prevent those problems.
- Dave
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