Re: KM266/VT8235, USB2.0 and problems

[Greg KH <greg@kroah.com>]

On Sun, Jan 04, 2004 at 11:30:51PM -0600, lk@rekl.yi.org wrote:
> Hi.  I've noticed that intermittently in the past with some devices, and 
> now every time with my new USB2.0 thumb drive (aka pen drive, aka flash 
> memory thing) that there are errors with the USB on my motherboard.  It's 
> a M7VIG-PRO, which has a KM266/VT8235 chipset.
> 
> Using kernel 2.6.0, I can only access my flash drive several times before 
> getting an error about not being able to access the device.  The dmesg 
> output is below.  When I try on my laptop, which has an EHCI USB2.0 
> controller, the device works flawlessly.  There are no errors, etc.
> 
> I am using a USB keyboard and a USB mouse.  Both work fine.
> 
> I've tried several combinations of connecting the device, with and without 
> the "noapic" kernel option while booting.  I've connected the device to 
> the motherboard's USB sockets (ie the ones soldered to the board, not via 
> wires to the case), through a USB2.0 hub, etc.  I get the same result 
> every time.
> 
> I've included the relevant parts of "dmesg" and "dmidecode".  Please cc: 
> me on responses, since I'm not subscribed, and let me know what to try 
> next.

Do the errors go away if you stop using devfs?

thanks,

greg k-h