Hi! this is exactly my problem! i think it is a bug in the scanner.o driver because i can perfectly scan negatives at 1600 dpi under Windows2000 emulated under WMVare (so using huci driver). My kernel is 2.4.17
On Monday 11 February 2002 12:11, Sergey Smirnov wrote: > I tried with both drivers: > uhci and usb-uhci. > I use USB Controller: Intel Corp. 82371AB PIIX4 USB (rev 01) > > Karl Heinz Kremer wrote: > > One more question: What USB host controller are you using (OHCI or UHCI), > > and which driver? There are two for UHCI: uhci and usb-uhci. Somebody > > just reported performance issues with the uhci driver. If this is > > what you are using, you may want to try the other one. > > > > Karl Heinz > > > > On Thu, Feb 07, 2002 at 03:57:09PM +0300, Sergey Smirnov wrote: > >> Karl, > >>I'm using Debian unstable with kernel 2.4.18-pre8, sane 1.0.7(epson > >> backend 0.2.19, xsane 0.84 > >>I have increased timeout up to 160 > >>#define RD_NAK_TIMEOUT (160*HZ) > >>I also tried with SANE_DEBUG_EPSON=64 > >>... > >>[epson] receive buf, expected = 4, got = 4 > >>[epson] receive buf, expected = 45, got = 45 > >>[epson] SANE_START: color: 19 > >>[epson] SANE_START: resolution (x, y): (1600, 1600) > >>[epson] SANE_START: area[dots] (x-offset, y-offset), (x-range, y-range): > >>(765, 9900), (1488, > >>2273) > >>[epson] SANE_START: data format: 16 > >>[epson] SANE_START: halftone: 0 > >>[epson] SANE_START: brightness: 0 > >>[epson] SANE_START: gamma: 2 > >>[epson] SANE_START: zoom[percentage] (x, y): (100, 100) > >>[epson] SANE_START: color correction: 128 > >>[epson] SANE_START: outline emphasis: 0 > >>[epson] SANE_START: read mode: 0 > >>[epson] SANE_START: mirror image: 0 > >>[epson] SANE_START: (new B6 or B7 command ESC s): 0 > >>[epson] SANE_START: (new B6 or B7 command ESC t): 128 > >>[epson] SANE_START: line counter: 3 > >>[epson] SANE_START: extension control: 1 > >>[epson] SANE_START: (new B6 or B7 command ESC N): 1 > >>[epson] send buf, size = 2 > >>[epson] sane_get_parameters() > >>[epson] Preview = 0 > >>[epson] Resolution = 1600 > >>[epson] get para 0x80fbe80 0x80fc528 tlx 12.143967 tly 157.164154 brx > >>35.803833 bry 193.255493 [mm] > >>[epson] sane_read: begin > >>[epson] sane_read: begin scan1 > >>[epson] error in receive - status = 5 > >>[epson] receive buf, expected = 6, got = -1 > >>... > >>Thank's. > >> > >>>Sergey, > >>> > >>>which Linux distribution are you using? What kernel and > >>>Sane version? > >>> > >>>You probably have some messages on your console about > >>>USB timeouts after this happens. The reason is very likely > >>>that your kernel is too old and does not have the increased > >>>timeout for USB scanner transmissions. > >>> > >>>Please see my page at http://www.khk.net/sane/faq.html for > >>>more information. > >>> > >>>Karl Heinz > >>> > >>>Sergey Smirnov <s...@leaves.ru> said: > >>>> Hi, > >>>>I have problem with Epson Perfection 1650. > >>>>I can't scan negative film with resolution more than 1200. > >>>>I/o error and only power off reset scanner. > >>>>-- > >>>>Sergey Smirnov > >>>>_______________________________________________ > >>>>Sane-devel mailing list > >>>>sane-de...@www.mostang.com > >>>>http://www.mostang.com/mailman/listinfo/sane-devel > >> > >>-- > >>Sergey Smirnov
