This fix the problem: >With that out of the way, did forcing your system to use OpenJDK 8
By the way, using the default OpenJDK 8 installation the problem was present, after that I have forced the use of OpenJDK 8 the problem was fixed! -- You received this bug notification because you are a member of OpenJDK, which is subscribed to openjdk-9 in Ubuntu. https://bugs.launchpad.net/bugs/1579781 Title: librxtx-java fails to open /dev/ttyACM0 port! Status in openjdk-9 package in Ubuntu: Incomplete Bug description: In order to use librxtx-java to communicate with an arduino I have to use 1081 alternatives (OpenJDK 8 is 1081). In order to obtain this result I have installed galternatives and I have set for each j* voice the 1081 choice (in each place where it was present). ProblemType: Package DistroRelease: Ubuntu 16.04 Package: openjdk-9-jdk (not installed) ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 Date: Mon May 9 14:44:03 2016 ErrorMessage: tentata sovrascrittura di "/usr/lib/jvm/java-9-openjdk-amd64/include/linux/jawt_md.h" presente anche nel pacchetto openjdk-9-jdk-headless:amd64 9~b114-0ubuntu1 InstallationDate: Installed on 2016-04-28 (11 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) RelatedPackageVersions: dpkg 1.18.4ubuntu1 apt 1.2.10ubuntu1 SourcePackage: openjdk-9 Title: package openjdk-9-jdk (not installed) failed to install/upgrade: tentata sovrascrittura di "/usr/lib/jvm/java-9-openjdk-amd64/include/linux/jawt_md.h" presente anche nel pacchetto openjdk-9-jdk-headless:amd64 9~b114-0ubuntu1 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openjdk-9/+bug/1579781/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~openjdk Post to : openjdk@lists.launchpad.net Unsubscribe : https://launchpad.net/~openjdk More help : https://help.launchpad.net/ListHelp
