ubuntu

There was error connecting bluetooth headphones in Ubuntu (xfce) 16.04 : "Connection Failed: blueman.bluez.errors.DBusFailedError: Protocol not available".

One of the solutions is installing bluetooth module for pulseaudio

1) sudo apt-get install pulseaudio-module-bluetooth
2) pactl load-module module-bluetooth-discover

or

sudo service pulseaudio restart

or

pkill pulseaudio

3) Remove device from the list and try to pair it again.

[timestamp] [core:notice] [pid 20056] AH00060: seg fault or similar nasty error detected in the parent process

File transfer was not working from laptop to smartphone and vice versa. Devices connected to each other without problems.

There is a plugin TransferService in Plugins section. When I've tried to wnable it the message with error was shown:

There was error running Half-Life on Source engine in Ubuntu 14.04 error was thrown.
Unable to load interface VGUI_Surface030 from vguimatsurface.so

There are much and more manuals in net about this stuff. But noone of them help me with this problem. I can't boot from usb flash on table.
First of all, you must enable usb boot. To enter “System Restore” you need to hold Shift key and click on Reboot option.
“Diag” → “Advanced options” → “UEFI Firmware Settings”.