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now, the lmde suddenly thinks it scanner is twice its size. it tries to scan the whole, and then forces the scanner to do more, resulting in the mechanics hanging.
i tried reinstalling lmde, tried it to with ubuntu, same problem. in windows, it only works with the software delivered with the scanner, before it was pug&play.
Its not lmde, it will be the scanner or the driver backend.
CanoScan LiDE 50 uses the sane-genesys backend ... usually come with the distro version of sane. You'll need to check that the scanner is being detected correctly. However, it looks a lot like the scanner itself is breaking.
Its not lmde, it will be the scanner or the driver backend.
CanoScan LiDE 50 uses the sane-genesys backend ... usually come with the distro version of sane. You'll need to check that the scanner is being detected correctly. However, it looks a lot like the scanner itself is breaking.
scanner is detected correctly. "Canon LiDE 35/40/50"
the break was pretty suddenly ( after i canceled a color-scan midway ), and in windows it is still working ( with the software from the cd ).
it is still acting weird on linux, suddenly stopping, hanging, trying to exceed physical limits, ect..
scanimage -L (to tell you what the scanner is called, something like "canon:/dev/sg0")
scanimage --calibrate --device-name [device]
You'll have to do this with the calibration image in place.
Some scanners have self-calibration: its a button on the box. Read the documentation that came with the scanner.
scanners are all different, so each backend will have different capabilities. Find out the capabilities of your backend with:
scanimage --help --device-name [device]
Last edited by Simon Bridge; 10-27-2010 at 06:34 AM.
scanimage -L (to tell you what the scanner is called, something like "canon:/dev/sg0")
scanimage --calibrate --device-name [device]
You'll have to do this with the calibration image in place.
Some scanners have self-calibration: its a button on the box. Read the documentation that came with the scanner.
scanners are all different, so each backend will have different capabilities. Find out the capabilities of your backend with:
have you checked your scanner documentation about how to calibrate it?
do you have the calibration sheet?
... scanimage just detected the scanner though.
... are the symptoms worse in windows too?
wel.. simple-scan (GUI interface) says it is not detected.
also got 2 windows on this machine. 1 virtual in vmware player windows xp. and a dual-boot with windows 7.
windows 7 can scan with it. but i get an error from the software when using the virtual windows. it seems like the whole communication to linux is screwed. ( because the signal goes from scanner to linux to virtual windows )
and in linux the same symptoms are back again. he thinks the "Y" of the scanner is twice as long.
scanimage -L gives now "genesys:libusb:003:003" instead of "genesys:libusb:002:003"
Last edited by koenfloris; 10-30-2010 at 04:02 AM.
Have you been able to scan from gnu/linux with this setup before?
Have you tried the scanner with a different computer?
Have you followed the scanner documentation to calibrate the scanner?
Have you been able to scan from gnu/linux with this setup before?
Have you tried the scanner with a different computer?
Have you followed the scanner documentation to calibrate the scanner?
sry for the absence, i was busy doing some school-exams.
anyhow, the scanner still has the same behavour. it did do its job before with ubunu and other linux-distrobutions. it is still functional enough in windows.
i tested it with a pclinuxos netbook and the behavour is the same.
i have read that forum-post, but is is out-dated, and my problem is not that the scanner does nothing. the scanner does something, but not the right thing. look at my first post at the beginning of this thread.
of course, it is a lot of hassle to do a reboot everytime i need to scan, i am at los what to do.
maybe worth to mention: if i select color-scan(300dpi), the scanner tries to scan beyond it's limits( mentioned in the first post ), and if i select "text-scan" ( aka, black and white @ 150dpi ) he already starts hanging at the very beginning of scanning.
simple-scan still thinks the scan is succesfull. but i don't get an usable image.
The link I supplied deals with troubleshooting sane. The process is the same even though the exact symptoms are different.
You have answered some of the questions - sort of:
Q. Have you been able to scan from gnu/linux with this setup before?
Quote:
it did do its job before with ubunu and other linux-distrobutions
... great - so it probably is not a sane problem.
Q. Have you tried the scanner with a different computer?
Quote:
i tested it with a pclinuxos netbook and the behavour is the same.
... great so it probably isn't an interface problem - try a different cable.
VMs sometimes have trouble connecting with external devices, if the netbook does not use such a weird setup, then
Q. Have you tried running simple-scan as root?
Quote:
simple-scan still thinks the scan is succesfull. but i don't get an usable image.
... does not quite answer the question - one of the things that can mess up is a change in permissions.
What do you mean by "useable image"? You do get some image?
You have been supplying conflicting information about what the scanner does - it fails in windows, it works in windows but only with the supplied drivers, it is "functional enough" in windows ... I can't do anything with this information!
Remaining to be answered:
Have you followed the scanner documentation to calibrate the scanner?
What does
sane-find-scanner
do?
... at the back of my mind is that your win7 will be newer than the rest. Can you recall if you started having this problem after you first (successfully?) tried to scan under win7? (Sometimes windows can leave a device in a state that makes it unusable in other OSs.)
The link I supplied deals with troubleshooting sane. The process is the same even though the exact symptoms are different.
You have answered some of the questions - sort of:
Q. Have you been able to scan from gnu/linux with this setup before?
... great - so it probably is not a sane problem.
Q. Have you tried the scanner with a different computer?
... great so it probably isn't an interface problem - try a different cable.
VMs sometimes have trouble connecting with external devices, if the netbook does not use such a weird setup, then
Q. Have you tried running simple-scan as root?
... does not quite answer the question - one of the things that can mess up is a change in permissions.
What do you mean by "useable image"? You do get some image?
You have been supplying conflicting information about what the scanner does - it fails in windows, it works in windows but only with the supplied drivers, it is "functional enough" in windows ... I can't do anything with this information!
Remaining to be answered:
Have you followed the scanner documentation to calibrate the scanner?
What does
sane-find-scanner
do?
... at the back of my mind is that your win7 will be newer than the rest. Can you recall if you started having this problem after you first (successfully?) tried to scan under win7? (Sometimes windows can leave a device in a state that makes it unusable in other OSs.)
sry for the conflicting information. i did not realise it was that confusing.
i will answer the questions that where unclear. i wasn't sure about what the problem could be, maybe that's why is subconsciously gave unclear answers.
an update: i have done an OS-hop to pclinuxos kde version. the default in pclinuxxos is xsane, so i am using that now.
the mechanics keep hanging while scanning, when i run xsane is root, it is the same. in windows, it still is able to scan with the software. without the software, it won't work.
the image i get is, i image with the lines the scan-device was on. the scan-sensor is on the same place, but the computer thinks it is moving. resulting in an image with horizontal lines. ( how do i upload pictures here? )
i don't scan in linux anymore because i am afraid the forcing wil break the scanner even more.
the problems started after i canceled an color-scan(from simple-scan), but i indeed suspect windows had been messing with the scanner. i am not sure, it is to long ago to remember.
sry for being so unclear, and thx for making me realize it.
i don't have any scanner documentation, i can look it up, but i suspect is is "windows only".
Code:
[koen@localhost ~]$ sane-find-scanner
# sane-find-scanner will now attempt to detect your scanner. If the
# result is different from what you expected, first make sure your
# scanner is powered up and properly connected to your computer.
# No SCSI scanners found. If you expected something different, make sure that
# you have loaded a kernel SCSI driver for your SCSI adapter.
found USB scanner (vendor=0x04a9 [Canon], product=0x2213 [CanoScan], chip=GL842) at libusb:002:011
# Your USB scanner was (probably) detected. It may or may not be supported by
# SANE. Try scanimage -L and read the backend's manpage.
# Not checking for parallel port scanners.
# Most Scanners connected to the parallel port or other proprietary ports
# can't be detected by this program.
# You may want to run this program as root to find all devices. Once you
# found the scanner devices, be sure to adjust access permissions as
# necessary.
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