I have nvidia-settings and nvidia-prime installed, but the 'PRIME Profiles' tab is missing.
How can I fix it to be able to switch between my GPUs?
Update:
~$ lspci -k | grep -EA2 'VGA|3D'
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
Subsystem: Hewlett-Packard Company 4th Gen Core Processor Integrated Graphics Controller
Kernel driver in use: i915
--
01:00.0 3D controller: NVIDIA Corporation GK208M [GeForce GT 740M] (rev a1)
Subsystem: Hewlett-Packard Company GK208M [GeForce GT 740M]
Kernel driver in use: nouveau

lspci -k | grep -EA2 'VGA|3D'terminal command. – Pilot6 Jul 31 '16 at 11:16- Not sure if the things are connected, but after my first reboot with 'PRIME Profiles' tab present, logging in took longer and a message about an internal error appeared. (ExecutablePath:
– 0lesya Jul 31 '16 at 19:42/usr/lib/unity-settings-daemon/unity-settings-daemon). When I rebooted again to check if it's a constant issue, I had no such problem.