Старый добрый switcheroo не включает дискретную видеокарту amd radeon hd 5470
[root@localhost sudonasa]# echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
[root@localhost sudonasa]# sudo cat /sys/kernel/debug/vgaswitcheroo/switch
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :DynOff:0000:01:00.0
2:DIS-Audio: :Off:0000:01:00.1
[root@localhost sudonasa]# echo ON > /sys/kernel/debug/vgaswitcheroo/switch
[root@localhost sudonasa]# sudo cat /sys/kernel/debug/vgaswitcheroo/switch
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :DynOff:0000:01:00.0
2:DIS-Audio: :Off:0000:01:00.1
[root@localhost sudonasa]#