Xubuntu 19.10 on Lenovo T495

Here are the steps I use to setup Xubuntu 19.10 on a Lenovo T495 properly.

Installation

• Drive Partitions:
• /: 48GB
• swap: 4GB
• /home: Remaining space

Problems & Solutions

Problem 1: Pixelated Graphics Artifacts

Solution:

1. Start Settings Editor (of Xfce4)
2. Find
• Channel: xfwm4
• Property: general -> vblank_mode
3. Set the value from auto to xpresent

Reference: https://bugzilla.redhat.com/show_bug.cgi?id=1739863

Problem 2: Deactivate Bluetooth on System Startup

Sometimes it's not desirable to on the Bluetooth whenever the system boots up. To deactivate it on system startup:

1. Create /etc/rc.local and put the following line.
   echo disable > /proc/acpi/ibm/bluetooth
2. Make /etc/rc.local to be executable:
   $ sudo chmod 755 /etc/rc.local

Problem 3: VirtualBox with Secure Boot

References:

• https://stegard.net/2016/10/virtualbox-secure-boot-ubuntu-fail/
• https://askubuntu.com/questions/1051166/virtualbox-with-secureboot

Problem 4: UFRII Printer Driver for Canon imageCLASS MF244dw

Both Ubuntu and Canon imageCLASS MF244dw printers support IPP Everywhere protocol, so Ubuntu automatically adds the printer if it discovers it in the network.
You can also use the Canon proprietary printer driver UFR II (stands for "Ultra Fast Rendering II") for faster printer times. To do this:

1. Download the latest UFRII driver (select Linux 64bit) from: https://www.usa.canon.com/internet/portal/us/home/support/details/printers/black-and-white-laser/imageclass-mf244dw/imageclass-mf244dw
2. Uncompress the installation file and run sudo ./install.sh
• When asked about "Do you want to register the printer now? (y/n)", answer n.
3. Run "Printers" and add the detected "Canon MF240 UFRII LT ..."
• The UFR II LT driver will be chosen automatically

Miscellaneous

Disable WiFi on Ethernet Connection

1. Refer to: https://www.richud.com/wiki/Ubuntu_disable_wifi_on_ethernet_connection
2. Change the 4th line from eth*) to eth*|usb*|en*)