Having spent time using my shiny new Dell in a professional setting, I am now discovering the downsides of the fabulous 4k screen when running Ubuntu.

• Ubuntu 15.04 is sort of ready for HiDpi, but there are some glaring problems that require attention, from the incredible shrinking popups to minuscule mouse pointers in some contexts.
• Worth a special mention are the scroll bars and some of the LibreOffice controls, both of which are tiny by default. The former is fixable by reverting to “classic” mode but I have not been able to solve the latter yet.
• Checkboxes are no fun either. They remain tiny, despite my best efforts.
• Most Java apps have issues with UI scaling. The toolbars in particular are a pain.
• Hooking up a projector for a presentation will mess things up after disconnecting it. See any of the above, plus some additional problems having to do with drastically resized app windows.

Don’t get me wrong; I don’t regret buying the Dell. I just wish Linux would catch up more quickly.