On Tue, Aug 07, 2007 at 10:26:15PM +0200, Niels wrote:
> Hi,
>
> I'm having problems with a new 500 GB USB disk. It works, but sometimes I
> get these in dmesg:
>
>
> usb 1-3: reset high speed USB device using ehci_hcd and address 2
> usb 5-1: USB disconnect, address 2
> drivers/usb/class/usblp.c: usblp0: removed
> sd 0:0:0:0: Device not ready: <6>: Sense Key : 0x2 [current]
> : ASC=0x4 ASCQ=0x2
> end_request: I/O error, dev sda, sector 254148215
> sd 0:0:0:0: Device not ready: <6>: Sense Key : 0x2 [current]
> : ASC=0x4 ASCQ=0x2
> end_request: I/O error, dev sda, sector 252434023
> EXT3-fs error (device sda1): ext3_find_entry: reading directory #15761836
> offset 0
>
>
> There's also a printer connected. This is on a pci/usb2 card. When the above
> happens, I get I/O errors. When I mount the drive next, there are errors
> and often missing files. Quite annoying!
>
> Kernel is 2.6.21
>
> What's going on?
You have a low voltage issue, or a bad cable. The device is
electronically disconnecting itself. Try using a externally-powered
hub, or a new cable.
thanks,
greg k-h
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