[sane-devel] Canon LiDE 20 vertical lines
On Sun, Aug 14, 2005 at 11:03:30PM +0200, Julien BLACHE wrote: I don't like the accusations you're making. This is not $RANDOM_DISTRO here with $RANDOM_MAINTAINER applying $RANDOM_PATCHES. The packages, as installed on my machine were, broken. The source I rolled by hand for pre-.13 were not. There was a brief period when the shipped package worked. I'm accusing nobody of anything other than 'at some point things broke'. Oh, I suppose I've also stated ...and it doesn't surprise me for various reasons that don't involve anyone's personal failings. There is a development/support model problem (not a huge one, but one that is breaking previously orking software) and I am frustrated by that. I want working things to stay working. The *hardware* hasn't changed any. Until then, shut up. And I mean it. If you had quality problems with 1.0.14 or 1.0.15 Debian packages, you should have reported that back then. Fine, I'll shut up then. It's my time and I'm uninterested in waving dicks. I wrote the code and that original code still works great for me. The rest of you can figure it out on your own. My scanner works. Terribly sorry for the offense. Monty
[sane-devel] Canon LiDE 20 vertical lines
Hi Monty, On Friday 05 August 2005 17:12, Monty wrote: On Fri, Aug 05, 2005 at 10:10:04AM +0200, Udo L?tkemeier wrote: Hi Gerhard, On Fri, 05.08.2005 07:59 +0200, Gerhard Jaeger wrote: these are the lines that should not appear :( I've done some tests here with a LiDE30 and there were no lines, then I connected the N670 (which should be the same device as the LiDE20) and I see also these damned lines - I don't know currently where the problem is - I have to do some more testing. I hope, you find the problem/error and can solve it in the next releases. Please let me and the LiDE20/N670 user know here, when the problem is located or solved. I have a LiDE20 and was the person who originally 'completed' the driver support. Vertical lines are indeed a fine calibration problem and after I fixed the original nonfunctional code, fine calibration has been broken again several times. Apparently it has been broken yet again; I got tired of it breaking all the time and nailed my package system to hold the installed version at 1.0.13, which I knew to work properly. I really appreciate your work and was happy that someone fixed this issue at least for the LiDE20, but I could not accept this: broken several times... - If the code is broken before a new SANE version will be released, I'd like to have some feedback not any complaints AFTER code-freeze, that's the way the show works. Honestly, I don't have the time to fix this for the third time Is there any kind of regression testing going on? I know it's hard to maintain a driver for diverse, low-end hardware families, OTOH, this is getting a little ridiculous. LiDE fine cal is broken more often than it's working. Having one driver trying to serve fifty different models across a family of ten related chips is unworkable when changes to any one model break ten others that can't even be tested because the author doesn't own the hardware to do the testing. That's indeed more or less impossible. I own the N670 which should be more or less the same as the LiDE20, but I could not test every single device before a release takes place - I need feedback from others. I'll put up the last LiDE20 driver (which works: I'm still using it) I contributed as soon as the machine it's on is on the Net again (just moved to a new house, IT there is in disarray). So you're still working with SANE-1.0.13? Is 1.0.14 also broken? In the end the differences to 1.0.13 are not that large. I'll submit a patch probably this evening and you're welcome to cross-check. What about the pictures from 1.0.13? Aren't those too dark? As I already said criticism is a good thing, as long as it is constructive! Ciao, Gerhard
[sane-devel] Canon LiDE 20 vertical lines
Hi, On Wednesday 03 August 2005 11:29, Udo L?tkemeier wrote: Hi Gerhard, On Tue, 02.08.2005 09:12 +0200, Gerhard Jaeger wrote: it's definitly not a SANE bug - it's a problem in fine calibration - if the position of the fine-calibration strip is not excactly set, you might get those stripes - some backends tryy to find it automagically, some set them directly. For the plustek-backend, you might want to test with various values for posShadingY (to set in the options section in plustek.conf), try values from 10 to 50... and make sure to use the latest CVS snapshot - enable debug and try a scan, i.e.: export SANE_DEBUG_PLUSTEK=19 ; xsane - send us the output. thanks for your answer. Now, i have test posShadingY with various values from 10 to 50. The value 40 have a little bit reduce the vertical lines in the scans, but this option don't remove the extreme lines in my scans. Option 40 have from values 10 to 50 best the best result. Output(very long) from export SANE_DEBUG_PLUSTEK=19 ; xsane: ;) http://www.udo-luetkemeier.de/temp/xsane.log The picture from this scan(please zoom in): http://www.udo-luetkemeier.de/temp/scan_with_sane-cvs.jpeg This scan was made with following version: sane-backends-2005-08-02.tar.gz Then, I have this detected: When I make with xsane a empty scan, I can better see the vertical lines. The following picture was the result of a scan with these settings in xsane: XSane mode Save, Color, Full color range, testscan.jpeg, Step +1, Type JPEG, resolution 300 dpi, gamma 0.30, brightness -100.0, contrast 100.0 With these stettings, you can best see the lines without a picture/document. http://www.udo-luetkemeier.de/temp/testscan.jpeg Are the lines in testscan.jpeg normal or are this lines also _the_ lines of my other scans? these are the lines that should not appear :( I've done some tests here with a LiDE30 and there were no lines, then I connected the N670 (which should be the same device as the LiDE20) and I see also these damned lines - I don't know currently where the problem is - I have to do some more testing. Ciao, Gerhard
[sane-devel] Canon LiDE 20 vertical lines
Hi Gerhard, On Fri, 05.08.2005 07:59 +0200, Gerhard Jaeger wrote: these are the lines that should not appear :( I've done some tests here with a LiDE30 and there were no lines, then I connected the N670 (which should be the same device as the LiDE20) and I see also these damned lines - I don't know currently where the problem is - I have to do some more testing. I hope, you find the problem/error and can solve it in the next releases. Please let me and the LiDE20/N670 user know here, when the problem is located or solved. With best regards, Udo L?tkemeier -- Udo L?tkemeier http://www.udo-luetkemeier.de GPG Key-ID: 0xB234C956 Public key available on my website. Key fingerprint = 6827 CC47 6ADE 124B B81A 32E3 00BB FF25 B234 C956
[sane-devel] Canon LiDE 20 vertical lines
On Fri, Aug 05, 2005 at 10:10:04AM +0200, Udo L?tkemeier wrote: Hi Gerhard, On Fri, 05.08.2005 07:59 +0200, Gerhard Jaeger wrote: these are the lines that should not appear :( I've done some tests here with a LiDE30 and there were no lines, then I connected the N670 (which should be the same device as the LiDE20) and I see also these damned lines - I don't know currently where the problem is - I have to do some more testing. I hope, you find the problem/error and can solve it in the next releases. Please let me and the LiDE20/N670 user know here, when the problem is located or solved. I have a LiDE20 and was the person who originally 'completed' the driver support. Vertical lines are indeed a fine calibration problem and after I fixed the original nonfunctional code, fine calibration has been broken again several times. Apparently it has been broken yet again; I got tired of it breaking all the time and nailed my package system to hold the installed version at 1.0.13, which I knew to work properly. Honestly, I don't have the time to fix this for the third time Is there any kind of regression testing going on? I know it's hard to maintain a driver for diverse, low-end hardware families, OTOH, this is getting a little ridiculous. LiDE fine cal is broken more often than it's working. Having one driver trying to serve fifty different models across a family of ten related chips is unworkable when changes to any one model break ten others that can't even be tested because the author doesn't own the hardware to do the testing. I'll put up the last LiDE20 driver (which works: I'm still using it) I contributed as soon as the machine it's on is on the Net again (just moved to a new house, IT there is in disarray). Monty
[sane-devel] Canon LiDE 20 vertical lines
Hi Gerhard, On Tue, 02.08.2005 09:12 +0200, Gerhard Jaeger wrote: it's definitly not a SANE bug - it's a problem in fine calibration - if the position of the fine-calibration strip is not excactly set, you might get those stripes - some backends tryy to find it automagically, some set them directly. For the plustek-backend, you might want to test with various values for posShadingY (to set in the options section in plustek.conf), try values from 10 to 50... and make sure to use the latest CVS snapshot - enable debug and try a scan, i.e.: export SANE_DEBUG_PLUSTEK=19 ; xsane - send us the output. thanks for your answer. Now, i have test posShadingY with various values from 10 to 50. The value 40 have a little bit reduce the vertical lines in the scans, but this option don't remove the extreme lines in my scans. Option 40 have from values 10 to 50 best the best result. Output(very long) from export SANE_DEBUG_PLUSTEK=19 ; xsane: http://www.udo-luetkemeier.de/temp/xsane.log The picture from this scan(please zoom in): http://www.udo-luetkemeier.de/temp/scan_with_sane-cvs.jpeg This scan was made with following version: sane-backends-2005-08-02.tar.gz Then, I have this detected: When I make with xsane a empty scan, I can better see the vertical lines. The following picture was the result of a scan with these settings in xsane: XSane mode Save, Color, Full color range, testscan.jpeg, Step +1, Type JPEG, resolution 300 dpi, gamma 0.30, brightness -100.0, contrast 100.0 With these stettings, you can best see the lines without a picture/document. http://www.udo-luetkemeier.de/temp/testscan.jpeg Are the lines in testscan.jpeg normal or are this lines also _the_ lines of my other scans? With best regards, Udo L?tkemeier -- Udo L?tkemeier http://www.udo-luetkemeier.de GPG Key-ID: 0xB234C956 Public key available on my website. Key fingerprint = 6827 CC47 6ADE 124B B81A 32E3 00BB FF25 B234 C956
[sane-devel] Canon LiDE 20 vertical lines
Hi, On Monday 01 August 2005 16:18, Gian Domeni Calgeer wrote: Hmm... This seems to be a common problem, maybe a bug in sane (see http://lists.alioth.debian.org/pipermail/sane-devel/2005-July/014006.html, http://lists.alioth.debian.org/pipermail/sane-devel/2005-July/014018.html, http://lists.alioth.debian.org/pipermail/sane-devel/2005-July/014019.html, http://lists.alioth.debian.org/pipermail/sane-devel/2005-July/014020.html) Am Montag, 1. August 2005 01.43 schrieb Udo L?tkemeier: Hello, i have bought a new Canon LiDE 20. I have me decide for these Scanner, because these is list on the website from the sane-project with status complete. Also have another LiDE 20 user from the ELUG(Essener Linux User Group) send me demo-scans. These scans have also a good quality. [SNIPSNAP] it's definitly not a SANE bug - it's a problem in fine calibration - if the position of the fine-calibration strip is not excactly set, you might get those stripes - some backends tryy to find it automagically, some set them directly. For the plustek-backend, you might want to test with various values for posShadingY (to set in the options section in plustek.conf), try values from 10 to 50... and make sure to use the latest CVS snapshot - enable debug and try a scan, i.e.: export SANE_DEBUG_PLUSTEK=19 ; xsane - send us the output. Ciao, Gerhard
[sane-devel] Canon LiDE 20 vertical lines
Hello, i have bought a new Canon LiDE 20. I have me decide for these Scanner, because these is list on the website from the sane-project with status complete. Also have another LiDE 20 user from the ELUG(Essener Linux User Group) send me demo-scans. These scans have also a good quality. Yesterday, i have install the Scanner on Debian etch(testing) with follow sane version: $ scanimage --version scanimage (sane-backends) 1.0.15; backend version 1.0.15 The Scanner runs also, only the quality is under Linux bad. The pictures have dark vertical lines through the scans. :-( I have make test scans, that you can see these vertical lines. Please follow the links to the testscans below. The lines are not on the glass plate of the scanner and not on the original photos. Yesterday, i have try adjust the settings in xsane. These adjust was of no avail. :-( Now, i have these scanner install on windows. There are no vertical lines in the scans. See the links to my testscans below. I have yesterday also tested the latest snapshot of sane-backends. With these, there was the same dark vertical lines. How can I remove the dark vertical lines in the scans on linux? Why are these lines not at the demo-scans of the other LiDE 20 user from the ELUG on Linux? Where do the dark vertical lines come from and why are they not on windows? Testscans(please zoom in, that you can better see the lines): - Testscans with dark vertical lines on Linux: http://www.udo-luetkemeier.de/temp/Schnee-Linux.jpg http://www.udo-luetkemeier.de/temp/Berge-Linux.jpg - Testscans without dark vertical lines on Windows: http://www.udo-luetkemeier.de/temp/Schnee-Win.jpg http://www.udo-luetkemeier.de/temp/Berge-Win.jpg - Testscan without dark vertical lines from another LiDE 20 user from the ELUG on Linux: http://www.udo-luetkemeier.de/temp/out0003.jpg System information: OS: Debian GNU/Linux etch(testing) CPU: Intel P4 2.8 GHz RAM: 1024 MB $ uname -r 2.6.8-2-686-smp sane version: $ scanimage --version scanimage (sane-backends) 1.0.15; backend version 1.0.15 Scanner: $ scanimage -L device `plustek:libusb:005:008' is a Canon N670U/N676U/LiDE20 USB flatbed scanner $ sane-find-scanner [...] found USB scanner (vendor=0x04a9 [Canon], product=0x220d [CanoScan], chip=LM9832/3) at libusb:005:008 [...] With best regards, Udo L?tkemeier -- Udo L?tkemeier http://www.udo-luetkemeier.de GPG Key-ID: 0xB234C956 Public key available on my website. Key fingerprint = 6827 CC47 6ADE 124B B81A 32E3 00BB FF25 B234 C956
[sane-devel] Canon LiDE 20 vertical lines
Hmm... This seems to be a common problem, maybe a bug in sane (see http://lists.alioth.debian.org/pipermail/sane-devel/2005-July/014006.html, http://lists.alioth.debian.org/pipermail/sane-devel/2005-July/014018.html, http://lists.alioth.debian.org/pipermail/sane-devel/2005-July/014019.html, http://lists.alioth.debian.org/pipermail/sane-devel/2005-July/014020.html) Am Montag, 1. August 2005 01.43 schrieb Udo L?tkemeier: Hello, i have bought a new Canon LiDE 20. I have me decide for these Scanner, because these is list on the website from the sane-project with status complete. Also have another LiDE 20 user from the ELUG(Essener Linux User Group) send me demo-scans. These scans have also a good quality. Yesterday, i have install the Scanner on Debian etch(testing) with follow sane version: $ scanimage --version scanimage (sane-backends) 1.0.15; backend version 1.0.15 The Scanner runs also, only the quality is under Linux bad. The pictures have dark vertical lines through the scans. :-( I have make test scans, that you can see these vertical lines. Please follow the links to the testscans below. The lines are not on the glass plate of the scanner and not on the original photos. Yesterday, i have try adjust the settings in xsane. These adjust was of no avail. :-( Now, i have these scanner install on windows. There are no vertical lines in the scans. See the links to my testscans below. I have yesterday also tested the latest snapshot of sane-backends. With these, there was the same dark vertical lines. How can I remove the dark vertical lines in the scans on linux? Why are these lines not at the demo-scans of the other LiDE 20 user from the ELUG on Linux? Where do the dark vertical lines come from and why are they not on windows? Testscans(please zoom in, that you can better see the lines): - Testscans with dark vertical lines on Linux: http://www.udo-luetkemeier.de/temp/Schnee-Linux.jpg http://www.udo-luetkemeier.de/temp/Berge-Linux.jpg - Testscans without dark vertical lines on Windows: http://www.udo-luetkemeier.de/temp/Schnee-Win.jpg http://www.udo-luetkemeier.de/temp/Berge-Win.jpg - Testscan without dark vertical lines from another LiDE 20 user from the ELUG on Linux: http://www.udo-luetkemeier.de/temp/out0003.jpg System information: OS: Debian GNU/Linux etch(testing) CPU: Intel P4 2.8 GHz RAM: 1024 MB $ uname -r 2.6.8-2-686-smp sane version: $ scanimage --version scanimage (sane-backends) 1.0.15; backend version 1.0.15 Scanner: $ scanimage -L device `plustek:libusb:005:008' is a Canon N670U/N676U/LiDE20 USB flatbed scanner $ sane-find-scanner [...] found USB scanner (vendor=0x04a9 [Canon], product=0x220d [CanoScan], chip=LM9832/3) at libusb:005:008 [...] With best regards, Udo L?tkemeier -- Udo L?tkemeier http://www.udo-luetkemeier.de GPG Key-ID: 0xB234C956 Public key available on my website. Key fingerprint = 6827 CC47 6ADE 124B B81A 32E3 00BB FF25 B234 C956
