I'm using LXDE. Is there a utility, menu item or other GUI-ish way to rotate the display on my monitor (e.g. by 90 degrees)? lxrandr doesn't seem to offer me that option.My system is Debian Stretch 64bit, it's some kind of Intel Graphics on-board chip, and the monitor is a Dell U2312. It works on Windows.
How can I rotate my display using some GUI tool, in LXDE?
gui;lxde;display settings
You can use arandr, a GUI front end for xrandr. This also is capable of rotating the screen. It is in the Debian repositories. Arandr's web page also mentions alternative GUI tools, no idea how up to date that is. 