I had similar (but not exactly the same) issues with my 1650 and SMP, the workaround for me was to set noapic at the boot prompt to turn off APIC interrup routing. Now the scanner is working fine - athough my loaded performance on my SMP box now suffers due to one processor handling all interrupts.
Although I was told by some that this is a mobo problem with it's APIC implementation, I haven't quite fully subscribed to that philosophy. I've been running my box for almost two years full SMP with APIC turned on, numerous devices, and this is the first time I've ever had a APIC issue. The one thing that is new is the use of the USB modules. -JSP On Mon, Dec 03, 2001 at 03:19:01PM +1100, John Sheahan wrote to To [EMAIL PROTECTED]: > Gday > > My hp 4100c scanner recently died. I replaced it with an epson 1650 > photo based on a little research. > > the new unit works fine on my uniprocessor athlon / a7m266 mb with > 2.4.15 (patched for umount) + xsane > > but does not function at all on my main box, a SMP 2x733 PIII > on MS6321 mb (via chipset) running 2.4.12ac5 , 2.4.16 or 2.4.17pre2. > > bucketloads of kernel: usb_control/bulk_msg: timeout > followed by > kernel: scanner.c: read_scanner(0): excessive NAK's received > > messages in syslog, unit just hangs in there > > whith scanimage -d epson:/dev/usb/scanner0 > > no difference between uhci and usb-uhci > > any suggestions as to how I can debug this issue. > > regards, john > > > _______________________________________________ > [EMAIL PROTECTED] > To unsubscribe, use the last form field at: > https://lists.sourceforge.net/lists/listinfo/linux-usb-users _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
