Comment 4 for bug 564617

Rarely, the screen doesn't stay blank : I can see the ubuntu logo, and then it shows a weird screen of grey lines (see attached photo)
It happened only twice, and without changing anything to the configuration, boot options or BIOS

Also, the first time I started this computer this morning, it reached the ubuntu desktop, but froze just after (no ctrl-alt-F1 available or anything).

I have to insist on the fact that I don't have any of these behaviors on karmic, or in lucid alpha 3, or in fedora 12. I don't think it is caused by a damaged hardware.