[sane-devel] UMAX Astra 2200 USB weirdness (Repost)
Tue, 29 Jul 2003 22:32:06 +0200
On Mon, 28 Jul 2003 20:51:15 +0200
Henning Meier-Geinitz <firstname.lastname@example.org> wrote:
> I've no idea about your specific problem but maybe some generic
> comments help:
> On Mon, Jul 28, 2003 at 01:16:05PM -0500, Matthew wrote:
> > From xsane I can "Preview" an image, but when I try to "Scan" an image
> > the interface locks up and I start to see the following in the syslog:
> > Jul 28 10:39:45 scan4 kernel: usb_control/bulk_msg: timeout
> > Jul 28 10:40:25 scan4 last message repeated 2 times
> > Jul 28 10:41:25 scan4 last message repeated 3 times
> Do you have a VIA mainboard chipset?
> Is local APIC enabled? Is ACPI enabled? If yes, try disabling both in
> your kernel.
> > I've tried several combinations of kernel/sane.
> Try using libusb instead of the kernel scanner driver (see man
> sane-usb). If the problem still occurs I guess it's either a SANE or a
> hardware problem.
I have reported problems with Umax Astra 2200SU connected by USB before: when doing resizing after preview, scanning stops after about 95% of the scan. Today, I compiled sane-backends-1.0.12 with libusb-0.1.7. After starting the scanner, I did a 'rmmod scanner' to delete the kernel driver, started xsane and did about 12 scans with resizing/rearranging the scanning area: no stop, no freeze, works perfect.
So, in addition to switch-off 'quality calibration' for usb connection, it is also important to use libusb instead of the kernel driver (kernel 2-4-19).