kopia lustrzana https://gitlab.com/sane-project/backends
148 wiersze
5.5 KiB
Plaintext
148 wiersze
5.5 KiB
Plaintext
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Q: I am using an Astra 2200 Scanner and can do a preview scan but the scanner
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hangs or produces bad images when I start a final scan.
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A: Disable the option "quality calibration". This does not reduce the image
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quality, the scanner reports it can do a quality calibration but that is
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not true for the current firmware version.
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Q: What scsi controller shall I use for UMAX scsi scanners?
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A: The controller cards that come with UMAX scanners are very simple ones
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and I suggest not to use this cards.
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I like the ncr53c8xx (=symbios-loigc53c8xx = lsi53c8xx) controllers because
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they are not too expensive and I had very good results with these cards.
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Especially the ncr53c810 is very interesting for scanning because this
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are fast scsi controllers which allow long scsi cables.
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The Adaptec 2904 controllers seem to make problems with UMAX scanners on
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linux.
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Q: I want to use the scsi-card that comes with my umax scanner.
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What card is it and is it supported by my os?
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A: There are at least two kind of scsi controller cards that
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come with UMAX scanners.
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ISA-Card:
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The ISA-cards that come with the umax scanners are very simple cards.
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I suggest not to use these cards.
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If you really want to try:
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the UDS-IS11 ISA-card is a DTC3181E-card based on the NCR5380-chip.
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On linux you may have the chance to get it work with the recent
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g_NCR5380-driver. The card does not have IRQ/DMA.
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Try the following option for kernel: dtc3181e=0x280,255
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or use the following command:
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insmod g_NCR5380 ncr_irq=255 ncr_addr=0x280 dtc3181e=1
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- ncr_irq=255 : no IRQ, no DMA
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- ncr_irq=254 : autoprobe IRQ
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- ncr_addr : can be: 0x220 0x240 0x280 0x2A0 0x2C0 0x300 0x320 0x340
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(Thanks to Colin Brough and Hans Schaefer for that tip)
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PCI-Card:
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Some UMAX Scanners come with a PCI SCSI controller card DOMEX DMX3191E.
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This card shall be compatible to the Advansys ABP940U (Chip: Advansys
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ASC3030). The card shall work without problems with the Advansys SCSI
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driver for linux.
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(Thanks to Volker Ossenkopf for that tip)
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Q: I use linux with a NCR/Symbios logic SCSI-Controller, sane does not work
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right.
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A: There are two differen drivers in the linux Kernel/modules.
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Use the BSD-driver ncr53c8xx or sym53c8xx.
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Q: I am using an AM53C974 based scsi card with a umax scanner, the system
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freezes when I start a scan, what can I do?
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A: Try the recent driver for the scsi card, take a look at:
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http://www.garloff.de/kurt/linux/dc390/index.html
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Q: Will there be a support for the UMAX-parallel-port-scanners?
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A: Since sane-1.0.5 there is a separate sane-umax-pp backend that does
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support (some) umax parallel port scanners.
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Q: Will there be a support for the UMAX-USB-scanners?
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A: UMAX published their SCSI-protocol for scanners. However they have not so far
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published USB protocols. This seems to be because they are using an ASIC that
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is produced by someone else and they had to subscribe an NDA.
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Without the protocol documentation it really is hard to write a driver.
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I will not work on a driver.
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The Astra 2200W does work when connected via SCSI.
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It could work with SCSI-via-USB-driver and connected via USB, but that
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is not tested.
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Q: I get a black area at the top of the image. What's wrong?
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A: This is a problem of some scsi-drivers.
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Update the driver for your scsi-adapter or update the operating system/kernel.
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For advansys-scsi-cards update to a new kernel which includes at least
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the driver version 3.1E of the advansys-scsi-driver. Take a look at:
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http://www.advansys.com/linux.htm
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Q: Does SANE and the umax backend work on LinuxPPC / big endian machine ?
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A: There are people using the sane-umax on a LinuxPPC (big endian) machine.
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Other people write that they can not scan on a LinuxPPC. It looks like this
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is a problem with the driver of the scsi card.
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The "MESH" SCSI card is reported to work. The NCR53C94 SCSI card
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seems not to work.
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Q: SANE hangs or crashes when I start a frontend for sane, what can I do?
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A: Sometimes the backends that are not used make problems.
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Edit /usr/(local)/etc/sane.d/dll.conf
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and comment out everything but the backend you need.
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Q: compiling sane aborts with error "virtual memory exhausted"
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on slackware linux with gcc. What goes wrong?
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A: The optimization set by "-O2" makes problems, try which one of the following
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calls work:
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make CFLAGS="-g -Wall -O1"
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make CFLAGS="-g -Wall -O"
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make CFLAGS="-g -Wall"
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You find a lot of tips and informations in the internet. E.g. take a look
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at http://www.scantips.com
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