Comments below. On Sat, 15 Dec 2001, stef wrote:
> On Fri, Dec 14, 2001 at 02:00:19PM -0600, s...@bob-n.com wrote: > > > > I have a umax astra 1220P parallel port scanner. Kernell info: > > > > Linux trc2.bob-n.com 2.4.16 #3 Thu Dec 13 21:14:10 CST 2001 i686 unknown > > > > Running on rehat 7.2, kernel upgraded from www.kernel.org > > > > I've got sane 1.06, with the umax_pp patch umax1220p-2.5. > > > > > > When I probe the scanner I get: > > > > # /usr/local/src/sane-backends-1.0.6/tools/umax_pp -p -t 1 > > [sanei_debug] Setting debug level of umax_pp_low to 1. > > [umax_pp_low] Using /proc info > > [umax_pp_low] Using /dev/parport0 ... > > UMAX 1220P scanning program version 2.5 starting ... > > Probing scanner .... > > [umax_pp_low] Found 0x18 expected 0x00 (umax_pp_low.c:4331) > > [umax_pp_low] UMAX Astra 1220/1600/2000 P ASIC detected (mode=7) > > [umax_pp_low] Unexpected value for for register 0x0D, expected 0x00 or > > 0x40, got 0x18 ! (umax_pp_low.c:4402) > > [umax_pp_low] EPPRegisterRead, found 0xFF expected 0x00 > > (umax_pp_low.c:4493) > > [umax_pp_low] *** It appears that EPP data transfer doesn't work *** > > [umax_pp_low] *** Please read SETTING EPP section in sane-umax_pp.5 *** > > > > I've already set the parallel port to EPP 1.7 in the BIOS. > > > > Anyone have any ideas on this? > > Failure to use EPP mode is the most common issue with the umax_pp > backend. > It yet unclear to me if the problem comes from the ppdev device, the backend > itself, > or both. > > I'm afraid that the problem comes from the warning regarding 'register > 0x0D', > which means that the backend couldn't set properly the epat C7 chip. I think > i'll > have to have a look at some kernel drivers that use this chip to understand > what > really happens. > > In one case, changing motherboard cured the problem. Did this already. results as above > In another, giving > explicitly the parport parameters in modules.conf (instead of 'auto' values) > also > cured it. Did this also, already, results as above. > > One thing that may be worth trying, is to build the backend with no > ppdev > support (by undefining HAVE_LINUX_PPDEV_H in include/sane/config.h). The > backend will > fall back to direct I/O and so will have to be run with root's priviledges. > OK, I'll give this a shot. > > Regards, > Stef > > > > > > One SPECIFIC question: wil this work with any db25 to db25 cable that > > carries all the pins or do I need some special cable (ieee 1284?)? > > > > - Bob Niederman > > > > > > > > > > > > > > > > _______________________________________________ > > Sane-devel mailing list > > sane-de...@www.mostang.com > > http://www.mostang.com/mailman/listinfo/sane-devel > _______________________________________________ > Sane-devel mailing list > sane-de...@www.mostang.com > http://www.mostang.com/mailman/listinfo/sane-devel >
