On Sat, 9 Oct 2004, Manuel Pancorbo Castro wrote:

> (I address this message to linux-usb-users list, but I'm not sure I can do 
> without subscription. So I send copy to main usb-storage developer Matthew 
> Dharm and also to Alan Stern)
> 
> The scenario: Dimension Dell 4500, P-IV 2,4 GHz, Debian-Sarge with 2.6.5 and 
> 2.6.8 kernels. 
> 
> The device: Woxter Slim Disk USB 2.0, 40 Gb
> 
> The system recognizes it inmediatly and I've made two partitions (FAT32, 
> reiserfs) on it, that I can mount/unmount without problem.
> 
> But when I copy big files to any of the (mounted) partitions, the disk
> hangs out and also hangs the process that makes the copy. Eventual
> shutdowns keep also hanged. The red light that signs data flow keeps on.
> 
> I've seen a lot of info about Genesys devices that hangs under this 
> conditions. Woxter seems to use this chip (see "dmesg" output below). The 
> info said that about 2.6.6 kernel  the problem was fixed. But I've tested 
> 2.6.8 and the problem continues. I have even changed the code of 
> driver/usb/storage/scsiglue.c in order to make transfers of 64Kb, instead of 
> 120Kb (as I saw somewhere as fix) but this doesn't work.

The correct fix for Genesys devices was finally found.  It's only in 
kernel versions 2.6.9-rc1 and later.

Alan Stern



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