Comment 326 for bug 85488

@Michael, I tried gutsy, but it doesn't run on my notebook.

@SilverLoz, Try one of the newer kernel, if your comfortable compiling a new one.

@All, Seems even more confusion on how to disable it, based in the posts above.

What I can confirm is:
Ubuntu: Feisty (7.04)
Scanners:
   CanonScan N1240U
   Acer 640BT
Kernel:
    2.6.20-16-generic (Ubunu standard Feisty kernel)
    2.6.20 (Ubuntu source)
    2.6.22 (kernel.org source)
Results:

The Caconscan would scan black pages, with no activity on the scanner itself with CONFIG_USB_SUSPEND set.
The Caconscan would scan black pages, with activity on the scanner itself with CONFIG_USB_SUSPEND not set.

I never tried the Acer with CONFIG_USB_SUSPEND set, but it does scan with it disabled, however, the lamp is always on and I cannot turn the scanner off.

I haven't tried any of the "autosuspend=0" suggestions, because of the uncertainty regarding proper config.

Conclusion:

1. Disable CONFIG_USB_SUSPEND until more stable and documented if having a scanner operational is important
2. CONFIG_USB_SUSPEND is not the issue, at least not with Canon scanners. Something else is wrong here, but it is being overshadowed by the CONFIG_USB_SUSPEND issue.

Re-compiling the kernel is easy, what is not easy is how to resolve the 2nd issue. I don't have any clue where to begin, and project pages on sane and plustek looks fairly quite, unless I'm looking in the wrong place.

Any ideas?