I dug up an old 2core 4gb ram PC and installed linux server on it. Server runs fine, but I wanted to install a GUI for it, if I sometimes would need it. However, it seems to freeze or crash constantly after 5-10 minutes of using, sometimes even before I got a chance to login. This happened on every GUI, not just ubuntu-desktop but with Lubuntu and Xubuntu.
The PC doesn't have dedicated GPU and I reckoned that the processor should be able to run a lightweight GUI, but could that be part of the issue?