I can't really describe the slightly odd behaviour of my terminal window and occasionally also on emacs, but here's a picture of it happening:

Weird stuff

If I press CTRL+L, it disappears. What could cause this? It started happening once I upgraded to Ubuntu 10.10, so I expect something broke there. It's a zsh shell using xterm. The computer in question is an Acer Aspire Timeline 4810T.

  • looks like problem with xorg or video driver. does it happen outside of the terminal?
    – phunehehe
    Oct 18, 2010 at 15:30
  • Yes, in emacs. Though not as often as it does in xterm.
    – Seamus
    Oct 18, 2010 at 15:51
  • @Seamus: it could be a bug anywhere from the font data to the video card through the client font handling library, other client X libraries, the X server, your X video driver. Does the bug show up with other fonts, or at other sizes? Does moving the window, or hiding it and showing it again, or resizing it change anything? Oct 18, 2010 at 17:53
  • 1
    You might more help if you ask on askubuntu.com
    – Lipis
    Oct 19, 2010 at 1:17
  • 1
    Bug reported here: bugs.edge.launchpad.net/ubuntu/+source/xterm/+bug/663469?
    – Seamus
    Oct 20, 2010 at 12:15

1 Answer 1


This is a bug with xorg and a fix exists.

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