Thanks to @launch-faygate's analysis in this bug, I came to a workaround on Ubuntu 18.04, and nufraw.
First, note that `nufraw` has also this option: nufraw --out-type=jpg --lensfun=none mypic.DNG ... however, it still causes the same "Procedure 'file-nufraw-load' returned no return values". So I decided to try the old version of liblensfun0 (0.2.8), which luckily is still online: --- wget http://mirrors.kernel.org/ubuntu/pool/universe/l/lensfun/liblensfun0_0.2.8-1_amd64.deb dpkg --contents liblensfun0_0.2.8-1_amd64.deb mkdir liblensfun0_0.2.8-1 cd liblensfun0_0.2.8-1 dpkg -x ../liblensfun0_0.2.8-1_amd64.deb . readlink -f usr/lib/liblensfun.so.0.2.8 --- Once you get the absolute path to liblensfun.so.0.2.8, note that used like this: --- LD_PRELOAD=/path/to/liblensfun0_0.2.8-1/usr/lib/liblensfun.so.0.2.8 nufraw --out-type=jpg --lensfun=none mypic.DNG --- ... when you click the Gimp button, Gimp will open, there will be no report of error - but no image imported inside Gimp either! However, this works: --- LD_PRELOAD=/path/to/liblensfun0_0.2.8-1/usr/lib/liblensfun.so.0.2.8 gimp mypic.DNG --- This will auto-open `nufraw` for importing the .DNG image, and once you click the "check" button, the image will finally be imported into Gimp. -- You received this bug notification because you are a member of Ubuntu Studio Bugs, which is subscribed to ufraw in Ubuntu. Matching subscriptions: Ubuntu Studio Bugs https://bugs.launchpad.net/bugs/1791138 Title: Cannot edit RAW files in GIMP under Lubuntu 18.04 Status in ufraw package in Ubuntu: Confirmed Bug description: Since Lubuntu 18.04 I've had problems editing RAW files (.pef) with GIMP. When opening a RAW file, gimp-ufraw displays/edits the image OK. But but when I press "OK" I get a GIMP error message:- Opening '/home/steve/Pictures/RAW/DAWN1384.pef' failed: Procedure 'file-ufraw-load' returned no return values This worked fine on earlier versions of Lubuntu. Current versions:- GIMP: v2.8.22-1 gimp-ufraw: 0.22-3 uname -a output: 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 16:00:05 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux lsb_release -rd Description: Ubuntu 18.04.1 LTS Release: 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ufraw/+bug/1791138/+subscriptions -- Mailing list: https://launchpad.net/~ubuntustudio-bugs Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntustudio-bugs More help : https://help.launchpad.net/ListHelp
