RPCS3 not is using PS3 Controller even added correct settings

Ubuntu 20.04 64 bits and PS3 controller using wired connection.
Added settings in OS from link below
https://wiki.rpcs3.net/index.php?title=H...figuration
The controller not is displayed in RPCS3 gamepad configuration GUI.
After I had installed qtsixa and thus using evdev. The controller is displayed, but not is possible configure the buttons how if input not is being allowed by system.

Thanks for your reply.