Hi, we are trying to support all possible distro/WM combinations. ALTLinux is not currently in our supported distros list. See this article for more information:
https://www.nomachine.com/AR11K00740
That said, if you’re willing to help we can provide you with debug version of our library that is responsible for devices forwarding so that we could gather more debugging info. Please let us know, and we’ll give you more detailed instructions.