This is to help my future self.
startx won’t load after updating Debian. I’ll often get no error messages in the logs, or the unhelpful message
failed to set IOPL for I/O (which is a red herring). There are many reasons why
startx might fail, so this issue is particularly difficult to search for.
I usually ask Harry for help.
Here’s what we did this time:
- Boot into recovery mode
- reinstall Gnome
Maybe this will help me next time.