In nvidia-settings
chosen "Intel (Повер Савинг Mode)". Output of sudo prime-select intel
is:
Info: the current alternatives in use are: ['nvidia-358-prime', 'nvidia-358-prime']
Info: the intel profile is already in use
But output from sudo cat /proc/acpi/bbswitch
is
0000:01:00.0 ON
Ubuntu 15.10 x64, nvidia-358
from ppa:graphics-drivers/ppa
.
Хорошо, я переключился назад на nvidia-355, решенная проблема.