[Bug 401096] Re: Weird "buffering" of scanned pages with scanimage frontend
[Expired for gscan2pdf (Ubuntu) because there has been no activity for 60 days.] ** Changed in: gscan2pdf (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/401096 Title: Weird "buffering" of scanned pages with scanimage frontend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gscan2pdf/+bug/401096/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 401096] Re: Weird "buffering" of scanned pages with scanimage frontend
** Changed in: gscan2pdf (Ubuntu) Status: Triaged => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/401096 Title: Weird "buffering" of scanned pages with scanimage frontend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gscan2pdf/+bug/401096/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 401096] Re: Weird buffering of scanned pages with scanimage frontend
In that last .deb, I put some more debug information, so if you can please start gscan2pdf with the --debug option and post the output after trying to scan with the scanimage frontend, then I've got a chance to see what is happening. I can't reproduce the problem here, so otherwise I'm working blind. -- Weird buffering of scanned pages with scanimage frontend https://bugs.launchpad.net/bugs/401096 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 401096] Re: Weird buffering of scanned pages with scanimage frontend
Please start gscan2pdf with --debug and post the output after trying to scan with the scanimage frontend. The debug output should report real file size and according to the PNM header. -- Weird buffering of scanned pages with scanimage frontend https://bugs.launchpad.net/bugs/401096 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 401096] Re: Weird buffering of scanned pages with scanimage frontend
On Wed, Aug 05, 2009 at 08:50:12PM -, Jeffrey Ratcliffe wrote: Please test this RC of the upcoming version, which waits for the PNM to get to the size reported by the header before importing it. ** Attachment added: gscan2pdf_0.9.30~rc1-1_all.deb http://launchpadlibrarian.net/29941461/gscan2pdf_0.9.30%7Erc1-1_all.deb Sorry for taking so long to get back around to this. This is the first time I've had an opportunity to scan something at home in a while due to travel. I installed this package, switched back to the scanimage frontend, and tried to scan a one-page document. I get the progress dialog with Scanning page 1 and the scanner scans a page, but the progress dialog stays there and never closes. After waiting a couple of minutes, I have no option but to cancel it. Using the libsane-perl frontend still works fine. -- - mdz ** Changed in: gscan2pdf (Ubuntu) Status: New = Triaged ** Changed in: gscan2pdf (Ubuntu) Importance: Undecided = Medium -- Weird buffering of scanned pages with scanimage frontend https://bugs.launchpad.net/bugs/401096 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 401096] Re: Weird buffering of scanned pages with scanimage frontend
Please test this RC of the upcoming version, which waits for the PNM to get to the size reported by the header before importing it. ** Attachment added: gscan2pdf_0.9.30~rc1-1_all.deb http://launchpadlibrarian.net/29941461/gscan2pdf_0.9.30%7Erc1-1_all.deb -- Weird buffering of scanned pages with scanimage frontend https://bugs.launchpad.net/bugs/401096 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 401096] Re: Weird buffering of scanned pages with scanimage frontend
It seems to me that gscan2pdf is trying to read the image before it has been fully written. scanimage was modified in 1.0.20 to buffer the image, and to write it only when complete. Please try the attached patch, which flushes the filesystem buffers immediately before importing the image. If this doesn't work, the only other idea I have is to hack the import code to monitor the image as it is written and only import it when the file size matches the PNM header. But this will be quite a bit of work. ** Attachment added: patch http://launchpadlibrarian.net/29654012/patch -- Weird buffering of scanned pages with scanimage frontend https://bugs.launchpad.net/bugs/401096 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 401096] Re: Weird buffering of scanned pages with scanimage frontend
On Wed, Jul 29, 2009 at 06:30:51AM -, Jeffrey Ratcliffe wrote: It seems to me that gscan2pdf is trying to read the image before it has been fully written. scanimage was modified in 1.0.20 to buffer the image, and to write it only when complete. Please try the attached patch, which flushes the filesystem buffers immediately before importing the image. I'll try this the next time I'm at the scanner. If this doesn't work, the only other idea I have is to hack the import code to monitor the image as it is written and only import it when the file size matches the PNM header. But this will be quite a bit of work. How about having scanimage write the image to a pipe, so we can detect EOF, rather than to a temporary file? -- - mdz -- Weird buffering of scanned pages with scanimage frontend https://bugs.launchpad.net/bugs/401096 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 401096] Re: Weird buffering of scanned pages with scanimage frontend
2009/7/29 Matt Zimmerman m...@ubuntu.com: How about having scanimage write the image to a pipe, so we can detect EOF, rather than to a temporary file? Unfortunately this is not possible. We have to use --batch mode in scanimage to be able to use the ADF - as my HP OfficeJet 5510, at least, is incapable of just scanning 1 page from the ADF - it always scans all that are in the feeder. --batch mode implies writing to files. -- Weird buffering of scanned pages with scanimage frontend https://bugs.launchpad.net/bugs/401096 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
