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cdrom600 02-02-2007 05:32 PM

Sane/Bluetooth Incompatibility

I've found a problem when using sane (xsane frontend) and a Zonet USB Bluetooth device concurrently. If the Bluetooth USB dongle is plugged in before the scanner, then xsane fails to communicate with the scanner (gives an I/O error when trying to acquire a preview) and sometimes won't find the scanner at all. If the scanner is plugged in before the Bluetooth dongle, everything works correctly.

- I am using Debian etch. If someone tells me how to find what version of libraries I have installed, I will do so and post them here (libusb, sane, libsane, xsane, etc.) They are all the latest available in Debian repositories.
- This seems like it's probably an issue with libusb or a problem on my local computer. If anyone can help me solve this problem on my computer, that would be good; I have no clue where to start.
- The USB BLuetooth adapter is a Zonet ZUB6211C. The scanner is a Canon CanoScan N1220U (USB).
- Both devices are plugged into the front USB ports on my computer. Later, I'll try plugging one into a port on the back of the computer or on my USB add-on PCI card.

I'm posting this to get advice if it's a problem with my computer, or if it's not, to make others aware.

unSpawn 02-06-2007 06:06 AM

Some kernel modules have debugging switches. If these have not, then kernel also has a switch for turning on USB debugging. Enabling verbose logging may help you report the problem. Unfortunately the kernel switch (as far as I know) is set at compile time, so you have to build a kernel from source.

cdrom600 02-23-2007 06:07 PM

I think that plugging the Bluetooth device into the USB PCI card has solved the issue.

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