I have a two monitor setup, but I like my laptop screen turned off (via Display).
When disconnecting the VGA cable, the screen is blank. I put the following command into ~/hacks/turn_on_laptop_screen.sh.
xrandr --output eDP1 --mode 1366x768This will enable the laptop screen. Find out the name of the display via xrandr -q.
Now, I opened Keyboard / Application Shortcuts, added my script and put it on the Numlock button. When confronted with a black screen, I simply press this button and have a screen.
This blog post explains how: http://tuxdiary.com/2015/07/05/fix-stream-setup-failed-error-with-blueman/
Quoted:
Edit /etc/bluetooth/audio.conf and uncomment the following line:
AutoConnect=trueRun the following command to install latest packages forblueman and related modules:
$ sudo add-apt-repository ppa:blueman/ppa
$ sudo apt-get update
$ sudo apt-get upgrade bluemanYou will need to install the pulseaudio bluetooth module if it’s not installed already:
$ sudo apt-get install pulseaudio-module-bluetooth
Check if the following lines are added in /etc/pulse/default.pa:
.ifexists module-bluetooth-discover.so
load-module module-bluetooth-discover
.endif
I also had to enable my box.
Volume Control / Configuration
Here, I had to set the Profile to “High Fidelity Playback (A2DP)” for my BT speaker box.
In Volume Control, you can now select the BT speaker as Output Device.
Then pair your speaker using the wizard. This has to be done only once, it will reconnect automatically (even after suspend).
Note: Currently, when rebooting, I have to load the module using pactl load-module module-bluetooth-discover, which sucks.
To allow changing the volume with the media keys, go into Volume Control / Output Device and click the weird green round button in your box section (Set as fallback).
With my Xubuntu, I use an Apple keyboard. Here, Command and Alt are swapped. To change it back to your "Windows" layout, do this.
sudo vi /etc/modprobe.d/hid_apple.conf
Enter
options hid_apple swap_opt_cmd=1