I'm trying to see if an old HP Compaq nc6000 can be revived and setup with Debian, but the screen looks like this:
ScreenAs you can see, it's a regular pattern of lines, which makes me think this is some kind of weird artifact, rather than a broken graphics driver, but I know nothing.
An installation program is running normally at the moment, and the weird screen is not preventing me from seeing and responding to commands in the very simple display (3 colours only).
What might be causing this pattern?