rodolfo@rodolfo-Aspire-A515-41G:~$ sudo apt install gamemode -y
[sudo] password for rodolfo:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  libgamemode0 libgamemodeauto0
The following NEW packages will be installed:
  gamemode libgamemode0 libgamemodeauto0
0 upgraded, 3 newly installed, 0 to remove and 6 not upgraded.
Need to get 65,7 kB of archives.
After this operation, 239 kB of additional disk space will be used.
Get:1 http://ppa.launchpad.net/samoilov-lex/gamemode/ubuntu bionic/main amd64 libgamemode0 amd64 1.4.0-6~bionic [8.828 B]
Get:2 http://ppa.launchpad.net/samoilov-lex/gamemode/ubuntu bionic/main amd64 libgamemodeauto0 amd64 1.4.0-6~bionic [5.884 B]
Get:3 http://ppa.launchpad.net/samoilov-lex/gamemode/ubuntu bionic/main amd64 gamemode amd64 1.4.0-6~bionic [50,9 kB]
Fetched 65,7 kB in 3s (26,2 kB/s)
Selecting previously unselected package libgamemode0.
(Reading database ... 397644 files and directories currently installed.)
Preparing to unpack .../libgamemode0_1.4.0-6~bionic_amd64.deb ...
Unpacking libgamemode0 (1.4.0-6~bionic) ...
Selecting previously unselected package libgamemodeauto0.
Preparing to unpack .../libgamemodeauto0_1.4.0-6~bionic_amd64.deb ...
Unpacking libgamemodeauto0 (1.4.0-6~bionic) ...
Selecting previously unselected package gamemode.
Preparing to unpack .../gamemode_1.4.0-6~bionic_amd64.deb ...
Unpacking gamemode (1.4.0-6~bionic) ...
Setting up libgamemodeauto0 (1.4.0-6~bionic) ...
Setting up libgamemode0 (1.4.0-6~bionic) ...
Setting up gamemode (1.4.0-6~bionic) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...