summaryrefslogtreecommitdiff
path: root/doc/umax/umax.FAQ
diff options
context:
space:
mode:
authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
commit6e9c41a892ed0e0da326e0278b3221ce3f5713b8 (patch)
tree2e301d871bbeeb44aa57ff9cc070fcf3be484487 /doc/umax/umax.FAQ
Initial import of sane-backends version 1.0.24-1.2
Diffstat (limited to 'doc/umax/umax.FAQ')
-rw-r--r--doc/umax/umax.FAQ147
1 files changed, 147 insertions, 0 deletions
diff --git a/doc/umax/umax.FAQ b/doc/umax/umax.FAQ
new file mode 100644
index 0000000..0901a2c
--- /dev/null
+++ b/doc/umax/umax.FAQ
@@ -0,0 +1,147 @@
+-------------------------------------------------------------------------------
+
+Q: I am using an Astra 2200 Scanner and can do a preview scan but the scanner
+ hangs or produces bad images when I start a final scan.
+
+A: Disable the option "quality calibration". This does not reduce the image
+ quality, the scanner reports it can do a quality calibration but that is
+ not true for the current firmware version.
+
+-------------------------------------------------------------------------------
+
+Q: What scsi controller shall I use for UMAX scsi scanners?
+
+A: The controller cards that come with UMAX scanners are very simple ones
+ and I suggest not to use this cards.
+
+ I like the ncr53c8xx (=symbios-loigc53c8xx = lsi53c8xx) controllers because
+ they are not too expensive and I had very good results with these cards.
+ Especially the ncr53c810 is very interesting for scanning because this
+ are fast scsi controllers which allow long scsi cables.
+
+ The Adaptec 2904 controllers seem to make problems with UMAX scanners on
+ linux.
+
+-------------------------------------------------------------------------------
+
+Q: I want to use the scsi-card that comes with my umax scanner.
+ What card is it and is it supported by my os?
+
+A: There are at least two kind of scsi controller cards that
+ come with UMAX scanners.
+
+ ISA-Card:
+ The ISA-cards that come with the umax scanners are very simple cards.
+ I suggest not to use these cards.
+
+ If you really want to try:
+ the UDS-IS11 ISA-card is a DTC3181E-card based on the NCR5380-chip.
+ On linux you may have the chance to get it work with the recent
+ g_NCR5380-driver. The card does not have IRQ/DMA.
+
+ Try the following option for kernel: dtc3181e=0x280,255
+ or use the following command:
+
+ insmod g_NCR5380 ncr_irq=255 ncr_addr=0x280 dtc3181e=1
+
+ - ncr_irq=255 : no IRQ, no DMA
+ - ncr_irq=254 : autoprobe IRQ
+ - ncr_addr : can be: 0x220 0x240 0x280 0x2A0 0x2C0 0x300 0x320 0x340
+
+ (Thanks to Colin Brough and Hans Schaefer for that tip)
+
+
+ PCI-Card:
+ Some UMAX Scanners come with a PCI SCSI controller card DOMEX DMX3191E.
+ This card shall be compatible to the Advansys ABP940U (Chip: Advansys
+ ASC3030). The card shall work without problems with the Advansys SCSI
+ driver for linux.
+
+ (Thanks to Volker Ossenkopf for that tip)
+
+-------------------------------------------------------------------------------
+
+Q: I use linux with a NCR/Symbios logic SCSI-Controller, sane does not work
+ right.
+
+A: There are two differen drivers in the linux Kernel/modules.
+ Use the BSD-driver ncr53c8xx or sym53c8xx.
+
+-------------------------------------------------------------------------------
+
+Q: I am using an AM53C974 based scsi card with a umax scanner, the system
+ freezes when I start a scan, what can I do?
+
+A: Try the recent driver for the scsi card, take a look at:
+ http://www.garloff.de/kurt/linux/dc390/index.html
+
+-------------------------------------------------------------------------------
+
+Q: Will there be a support for the UMAX-parallel-port-scanners?
+
+A: Since sane-1.0.5 there is a separate sane-umax-pp backend that does
+ support (some) umax parallel port scanners.
+
+-------------------------------------------------------------------------------
+
+Q: Will there be a support for the UMAX-USB-scanners?
+
+A: UMAX published their SCSI-protocol for scanners. However they have not so far
+ published USB protocols. This seems to be because they are using an ASIC that
+ is produced by someone else and they had to subscribe an NDA.
+ Without the protocol documentation it really is hard to write a driver.
+ I will not work on a driver.
+
+ The Astra 2200W does work when connected via SCSI.
+ It could work with SCSI-via-USB-driver and connected via USB, but that
+ is not tested.
+
+-------------------------------------------------------------------------------
+
+Q: I get a black area at the top of the image. What's wrong?
+
+A: This is a problem of some scsi-drivers.
+ Update the driver for your scsi-adapter or update the operating system/kernel.
+
+ For advansys-scsi-cards update to a new kernel which includes at least
+ the driver version 3.1E of the advansys-scsi-driver. Take a look at:
+ http://www.advansys.com/linux.htm
+
+-------------------------------------------------------------------------------
+
+Q: Does SANE and the umax backend work on LinuxPPC / big endian machine ?
+
+A: There are people using the sane-umax on a LinuxPPC (big endian) machine.
+
+ Other people write that they can not scan on a LinuxPPC. It looks like this
+ is a problem with the driver of the scsi card.
+
+ The "MESH" SCSI card is reported to work. The NCR53C94 SCSI card
+ seems not to work.
+
+-------------------------------------------------------------------------------
+
+Q: SANE hangs or crashes when I start a frontend for sane, what can I do?
+
+A: Sometimes the backends that are not used make problems.
+ Edit /usr/(local)/etc/sane.d/dll.conf
+ and comment out everything but the backend you need.
+
+-------------------------------------------------------------------------------
+
+Q: compiling sane aborts with error "virtual memory exhausted"
+ on slackware linux with gcc. What goes wrong?
+
+A: The optimization set by "-O2" makes problems, try which one of the following
+ calls work:
+
+ make CFLAGS="-g -Wall -O1"
+ make CFLAGS="-g -Wall -O"
+ make CFLAGS="-g -Wall"
+
+-------------------------------------------------------------------------------
+
+You find a lot of tips and informations in the internet. E.g. take a look
+at http://www.scantips.com
+
+