Hi all, I have just received my new DTP-94, and started playing around with it. I'm using ubuntu dapper on AMD64. I also managed to compile the source after tweaking the Jamfiles, but the resulting dispcal always failed: pablo@svalbart:~/src/argyll-0.60-jam/spectro$ ./dispcal -r dispcal: Error - Unable to open the display pablo@svalbart:~/src/argyll-0.60-jam/spectro$ After that, I have downloaded the linux binaries from the argyllcms website. (including patch2 update). They seem to work fine, until I get a "dispcal: Error - Conjgrad failed" error while running: pablo@svalbart:~/tmp/argyll-bin/bin$ sudo ./dispcal -t 6500 -e -y l -v -c 1 FSC-S19_argyll.cal I tried twice and it always got the error after a short computation. The stdout logfile is attached (failed_stdout.txt) Then I looked at this list and saw that this error has been seen before, and decided to create a log file using the -D option as well. Now the interesting thing is: This time it didn't crash! pablo@svalbart:~/tmp/argyll-bin/bin$ sudo ./dispcal -D -t 6500 -e -y l -v -c 1 FSC-S19_argyll.cal 2>stderr.log The respective logs (successful_run_stdout.txt and successful_run_stderr.txt) are also attached. During the successful run, I just started dispcal and jumped straigt to the calibration, 6). In the previous runs I had adjusted the display using options 1 to 5 (sequentially). So dispcal seems to break somehow if the options 1-5 are used before option 6, the final calibration. The workaround is to quit dispcal after adjusting the monitor, restart dispcal and then just do the calibration. ciao Pablo