In xfce you may be able to access it through Settings-Print Settings(system-config-printer)- Unlock with password-right click-choose “Properties” and see if it is available Under Ink/Toner Levels. As another poster has pointed out it may be brand/model specific. In my case, this information is not available. I would give ink from the AUR a try and see how it goes. On my (Brother) printer I had to scroll through the LCD screen and it was under Print settings which printed a summary which listed the information.
