After a fresh installation of LXDE on Ubuntu 18.04, the tap gesture did not work for the touchpad of my Lenovo Y510P.
Installing Synaptics as helped to solve the problem:
sudo apt install xserver-xorg-input-synaptics
xserver-xorg-input-libinput was installed, and I did not manage to configure the tap gesture using this driver, properly.
I found this solution on askubuntu.com.
This article describes steps for creating a bootable USB drive to install Windows Vista, 7, or 8 on Ubuntu. I only tested the procedure for Windows Vista. You first need the tool unetbootin and an ISO image of the desired version of Windows (e.g. by ripping the installation DVD):
sudo apt-get install unetbootin
Then follow these steps:
- Afterwards, first format the USB drive as FAT32 because unetbootin has problems with recognizing NTFS-formatted driveds in its current version.
- Run unetbootin. It should recognize the USB drive. Leave the program open.
- Format the USB drive as NTFS (with boot flat enabled) and mount it somewhere (e.g. at /mnt).
- Go back to unetbootin and start creating the bootable USB drive by clicking OK.
For formatting, you may use the graphical tools GParted, KDE Partition Manager (command: partitionmanager) or the command-line tool fdisk.
-  Source of this solution from askubuntu.com
When being at my workplace at home, I like to use an external monitor instead of the laptop display (Acer TravelMate 5730G). I did not always want to open up the display control in Kubuntu in order to change between between primary (laptop) and secondary (external monitor) device. I came up with two small scripts which perform the switching in both directions. One is shown below, the other one is analogous.
xrandr --output LVDS --crtc 0 --auto --output VGA-0 --auto
xrandr --output LVDS --crtc 0 --auto --output VGA-0 --off
This effectively switches on both displays and then disables VGA-0. You can find out about your connectors’ names by running xrandr without arguments or xrandr –verbose which also gives you the CRTC number (supported controllers) which needs to be set manually sometimes (see line CRTCS in the verbose output).
However, recently I noticed there is a more reliable tool called disper which has been developped for facilitating the monitor management with Nvidia graphics cards. Yet, it also works perfectly for my ATI mobile Radeon HD 3650 graphics chip.
The package can be installed from the regular Ubuntu repositories:
sudo apt-get install disper
Afterwards you may easily switch monitors with one short command as the help (disper –help) suggests:
-l, --list list the attached displays
-s, --single only enable the primary display
-S, --secondary only enable the secondary display
The primary (secondary) display is the first (second) display returned by –list. On my machine, neither cloning (–clone) nor extending the display (–extend) work properly, unfortunately.
-  Short intro on disper in the ubuntuusers Wiki (German)