Running Ubuntu 20.04.1 LTS on an iMac 27 Retina

This document was written for a late 2012 Retina 27" iMac that I moved to linux due to a hardware instability with Mac OS.

Mouse

Mousewheel

https://dev.to/bbavouzet/ubuntu-20-04-mouse-scroll-wheel-speed-536o

Install imwheel

sudo apt install imwheel

Install the mousewheel.sh file

Then

chmod +x mousewheel.sh
./mousewheel.sh

Finally add imwheel in ubuntu startup application.

Here is another take on Magic Mouse setup on Linux.

http://sneclacson.blogspot.com/2016/09/using-apple-magic-mouse-with-ubuntu-1604.html

Sound

in /etc/modprobe.d/alsa-base.conf

Add 'options snd-hda-intel model=imac27_122' to the end of the file.

reboot or

sudo alsa force-reload

then run the mixer

alsamixer

Unmute the Headphone jack and set the sound levels.

iSight

https://help.ubuntu.com/community/MactelSupportTeam/AppleiSight?action=show&redirect=AppleiSight

Remap Keyboar for Mac Keyboard

From the Ubuntu Forums - https://askubuntu.com/questions/131900/how-do-i-switch-the-command-key-and-control-key-on-a-macbook-pro

Install Tweak Tool (This is the name of the app in your app list.)

sudo apt install gnome-tweak-tool

Launch Tweak Tool

1. First swap the dashboard hotkey to the right side and then under "Additional Layout Options" you can use "Ctrl position/ Swap Left Win with Left Ctrl" to good effect.

2. You can use "Ctrl position/ Swap Left Win with Left Ctrl" to good effect.

Mapping Super (Command/Windows) key to clt.

For Ubuntu Bungie I had to remap the super key.

Binding Super to Ctrl What about binding your left Windows/Logo/Super key to act as another Ctrl key?

You can achieve that with the following xmodmap commands:

remove mod4 = Super_L
keysym Super_L = Control_L
add Control = Control_L

Assuming you saved the above lines as super_as_ctrl.xmodmap you can test out the effect by executing

xmodmap super_as_ctrl.xmodmap

To make the change permanent (surviving re-login/reboot) rename the file to .Xmodmap in your home folder.

GTK3 Theme and icons

Icons Cupertino-BigSur.tar.xz

https://www.gnome-look.org/p/1102582/startdownload?file_id=1594922295&file_name=Cupertino-BigSur.tar.xz&file_type=application/x-xz&file_size=35608344

Theme

https://www.gnome-look.org/p/1275087/startdownload?file_id=1595596874&file_name=Mojave-dark.tar.xz&file_type=application/x-xz&file_size=561024