Re: [libusb] Invalid Maxpacket 64 bits

[Alan S. <st...@ro...>]

On Tue, 29 Jul 2014, Colin Jermain wrote:

> Hi,
> 
> I'm trying to connect to a USB device on openSUSE 12.2 (kernel 
> 3.4.63-2.44, 32-bit) and getting a error about "invalid maxpacket 64". 

Those are merely warnings, not errors.  If the device works okay, you 
can ignore them.

> This seems similar to a previous post on the mailing list 
> <http://sourceforge.net/p/libusb/mailman/message/22229329/>, where the 
> device was supposed to register 512 for high-speed mode. Its a Ametek 
> Signal Recovery 7270 and never gets a /dev/ttyUSB connection assigned, 
> but seems to find the ehci_hcd driver. The system messages are listed below.
> 
> Any ideas how to fix this?

The only way to fix it is to update the firmware on the device.

Alan Stern