Red Hat Bugzilla – Bug 244155
xsane is unable to scan only shows a black box
Last modified: 2007-11-30 17:12:07 EST
Description of problem:
i started xsane to scan some documents. first, acquired preview showed the doc
ok, while scanning it produced in viewer a black box.
itried playing with settings (preferences) and the result was that the preview
no longer showed the doc, but instead the same black box. i've searched with yum
and found some packages containing the string "sane" and i've installed
starting xsane again makes no difference.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
preview and viewer_after_scan shows only a black box (wich can be saved in
preview shows the document and so does the viewer_after_scan.
on the same computer, the scanner worked on fc6, and still works on another
machine wich runs centos 5.0
scanimage -L says:
device `plustek:libusb:001:005' is a Canon N670U/N676U/LiDE20 USB flatbed scanner
rpm -q xsane
rpm -q sane-backends
Linux 2.6.21-1.3194.fc7 #1 SMP Wed May 23 22:35:01 EDT 2007 i686 i686 i386 GNU/Linux
Please get the latest FC6 kernel:
Install it ("rpm -ivh --oldpackage ..."), reboot into that kernel and report
back whether this makes a difference.
If the latest kernel of FC6 doesn't work, please try the first FC6 kernel as well:
sorry, but i am on f7, as you can see above. fc6 was fine.
I am aware that you are on F7, that's why I listed the URLs to the package
files. Please do try the FC6 kernel on F7 and report back whether this makes a
ok, here's what i've done: installed 2952 and rebooted with the "new" kernel.
xsane worked perfectly on preview.
then i rebooted on the latest f7 kernel and everything was black.
then rebooted again on 2952 and did some actual scanning. everyting worked.
rebooted again on f7 (2.6.21-1.3194.fc7) and pressed "scan" instead of "preview"
it worked. i scanned again, worked again. i closed xsane, started, scan, worked.
pressed "preview" and was all black, then "scan" all black, restart xsane,
"scan" all black. restarted computer into 3194 again, xsane, scan, all black.
and it stayed black.
maybe it worth mentioning that, the very first time i started xsane on f7, the
preview was fine, then the scan was black, then everything stayed black.
I'll change the component to kernel so the kernel maintainers can evaluate
whether the regression introduced is a) a bug in the kernel or b) a legitimate
change that reveals an up to now hidden bug in userspace.
thank you very much!
*** This bug has been marked as a duplicate of 243953 ***