It is sad but true: More than two years later in netpbm (2:10.0-15.3) of Ubuntu 16.04.1 LTS the bug is still not fixed :-(
Fortunately, there is another tool set (ImageMagick) which has a working conversion tool (convert). So one can convert xwd output to file.png by executing: xwd -root -display :0 | convert xwd:- file.png I attached file "test.xwd" which shows the bug of xwdtopnm ** Attachment added: "This XWD Screen dump of my display shows xwdtopnm bug" https://bugs.launchpad.net/ubuntu/+source/netpbm-free/+bug/1379480/+attachment/4806300/+files/test.xwd -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to netpbm-free in Ubuntu. https://bugs.launchpad.net/bugs/1379480 Title: xwdtopnm generates bad pnm files Status in netpbm-free package in Ubuntu: New Bug description: I'm trying to capture the screen to a png file, with the following command: xwd -root -display :0 | xwdtopnm | pnmtopng > file.png The output file is a valid png file, but it's a garbled picture. By doing the following diagnostic steps, xwdtopnm was determined to be the problem: xwd -root -display :0 > test.xwd ; gimp test.xwd ===> picture looks good xwdtopnm < test.xwd > test.pnm ; gimp test.pnm ===> gimp reports "PNM Image Message: Unsupported maximum value." pnmtopng < test.pnm > test.png ; gimp test.png ===> gimp loads a garbled picture file test.xwd ===> file.xwd: XWD X Window Dump image data, "xwdump", 3840x1080x24 pnmtoxwd < test.pnm > test2.xwd ; gimp test2.xwd ===> gimp loads a garbled picture Hopefully you can fix the glitch in xwdtopnm easily! Thanks! ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: netpbm 2:10.0-15 ProcVersionSignature: Ubuntu 3.8.0-44.66~precise1-generic 3.8.13.25 Uname: Linux 3.8.0-44-generic x86_64 ApportVersion: 2.0.1-0ubuntu17.7 Architecture: amd64 Date: Thu Oct 9 11:51:37 2014 MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) SHELL=/bin/bash SourcePackage: netpbm-free UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/netpbm-free/+bug/1379480/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
