[yast2] can not open so I can do nothing

[hui]

This comment might help you to set your locale.:

Dual gpu, intel and nvidia, and external monitor

To list all available (installed) locales, simply type localectl list-locales in a terminal. Then you can set the one you want from this list. As example english US: sudo localectl set-locale LANG=en_US.UTF-8 Or for italien IT: sudo localectl set-locale LANG=it_IT.UTF-8 To check, if the change was properly applied, type locale in a terminal.

Also dependend on your used desktop environment, there are also possibilities to set the locale. E.g for Plasma you can use systemsettings.

The YaST stack got removed from Leap 16.0. See also the Leap 16.0 release notes.

To setup your repos and for software management, Myrlyn is the successor of the YaST Software and YaST Repositories module.

For general system management, Cockpit is the successor of many YaST modules.