<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/3.26.0"> </HEAD> <BODY> Hi Greg, To try and address your original problem: Do you get any errors displayed when your screen scrambles? Try dropping to a terminal by pressing Ctrl-Alt-F1 Log in Type in tail -n50 /var/log/Xorg.0.log Look for any lines that start (EE) These lines and the ones directly before and after should give enough information to diagnose what the issue is. Alternatively, an easier way might be to start up using the live CD, mount the file system of your hard drive and open the file /var/log/Xorg.0.log You can probably then copy and paste the log to this list. Guy. On Sun, 2009-05-17 at 08:29 +0100, Greg Herdman wrote: <BLOCKQUOTE TYPE=CITE> <PRE> Hi Everyone, I'm really new to the Ubuntu scene; got involved about 6 months ago. Everything has been working fine until a recent update session. An incomplete update was signalled (I 'd just installed ClamTk and PiTiVi a day or so earlier. At first the screen dropped into 'basic' low-res mode. I managed to reset it using the appropriate desktop apppication (forgot it's name!) but the resolution wasn't quite as previously, so I tried to tweak it. Result - totally scrambled screen such that the desktop is unusable. I've been making basic use of Live mode from the installation CD, which works well with everything looking fine. I can access the harddrive, save and retrieve files, read and write removable media and also print. The downsides of Live user mode, however, are substantial, particularly in terms of speed, so I need to get back to my original settings. DSo, my question - I've noted a recent thread that seems to imply that I could reinstall over my current installation which would leave all my files within 'home' intact. Is this so? I'm using Ubuntu 8.04LTS (Hardy Heron) on a desktop. Any ideas - much appreciated. Greg </PRE> </BLOCKQUOTE> </BODY> </HTML>