Editing Lenovo ThinkPad P1 (section)

=== After Booting into Ubuntu... ===

Another important thing you'll need to do on kernels 5.7 and above is to disable <code>psmouse.inter_touch</code> to prevent the issue where the trackpad won't let the computer suspend (go into sleep mode).

'''Keep this in mind, you'll need to come back here if you are upgrading to kernel 5.7 (or whenever you perform an update) or if you're having issues suspending.'''

To do this, first press Ctrl+Alt+T to open a terminal, type <code>uname -a</code>, then press ENTER. You should see something like <code>Linux x.y-z</code> where x is the major version number, y is the minor version number. You can ignore z. If you see <code>Linux 5.7-z</code> or <code>Linux 5.8-z</code> or something else where x=5 and y>=7, you need to do this.

Now, edit <code>/etc/default/grub</code> in a text editor as the root user.

(To do this, type in <code>sudo nano /etc/default/grub</code>, press ENTER, and then type in your password. You should see different text appear on the screen.)

Under <code>GRUB_CMDLINE_LINUX_DEFAULT</code>, before <code>quiet splash</code>, '''inside of the double quotes''', type in either:

1. If you have to disable the touchpad (kernel >= 5.7): <code>modprobe.blacklist=nouveau psmouse.synaptics_intertouch=0</code> and save the file (Ctrl+X, Y, ENTER).

2. If you don't have to disable the touchpad (kernel < 5.7): <code>modprobe.blacklist=nouveau</code> and save the file (Ctrl+X, Y, ENTER).

In that same terminal (or in a new terminal), type in <code>sudo update-grub</code> and wait for the process to complete.

Now you no longer have to type in that <code>modprobe.blacklist=nouveau</code> thing (and the <code>psmouse.synaptics_intertouch=0</code> thing if having suspend issues) every time you boot!

Enjoy using Ubuntu/Linux!