Please refer the tech specs for Lighroom here : System requirements for Adobe Lightroom for Mac and Windows OS
On Ubuntu it's not been tested and incompatible.
You may want to fill the wish form for the said OS : Feature Request/Bug Report Form
Mrinmay, thanks for you answer. My need is to log in Lightroom (I'm run Lightroom in Ubuntu and work well in this moment in shareware for 30 days) but Lightroom asks me the serial number, I dont have serial number, I have adobe suscription. Is for this reason than I ask for the Lightroom installer with the possibility of log in with my user and not to register the serial number. Is possible this? Bye