The USB problems all over again... The closer we get to a 2.4 kernel release the less likely it is that the EPSON scanners will work with USB in 2.4. I am desperately looking for somebody who can fix this problem. It seems to be caused by UHCI, at least I have only receveived problem reports from people running UHCI interfaces. If anybody is using an EPSON USB scanner with an OHCI interface, please let me know.
Unfortunately on the USB development list there was not too much feedback whenever somebody brought up this problem. The really odd thing is that it only seems to happen with EPSON scanners, every other scanner seems to work. The same goes for for all other bulk devices. But the fact that it worked with 2.3.39 is enough reason to believe that it's not related to my code or to the scanner.
I'm still wainting for the Perfection 610 scanner that's being supplied by EPSON. They confirmed my shipping address and my phone number two days ago, so I'm hoping the scanner is on it's way by now.
On a different, but related subject: I received the colorimeter that I bought on EBay. Unfortunately (or to be honest as I expected) it does not work and will not work with Linux. The company is not releasing any information about the communication protocol and my first experiments don't look promising: The device seems to send raw data to the Windows software, which is then calculating the colorimetric values. So without knowing the protocol and the exact specification of the sensor it's not possible to impement a Linux solution. BTW, the device is a ColorSavvy ColorMouseToo!.