Might be totally unrelated, but I've seen the same jailbird stripes pattern,
on my old Dell Dimension XPS R400 (a Pentium II, circa 1998, recently
revived).
Turned out it was something to do with the power management. My monitor is
supposed to be power management friendly, but not with Linux (at least not
Mandrake, the only distro I've tried). I turned it off in the BIOS and on the
built-in monitor menu, but it was still being activated by Linux. Then I
discovered System -> Configuration -> KDE -> Power Control -> Display Power
Control, and turned it off from there.
Now there's no problem as long as someone is logged in (I usually just lock
the screen and turn off the monitor power when I leave). But it still gives
me the stripes if I leave it sitting at the X login prompt. But if I click
around till I hit the login window (not hard since it's always in the same
spot), that window will come back, with stripes still in the background.
IIRC, it was hanging completely until I disabled the BIOS power management.
But that was 2 months ago, which is ancient history for my tired old brain
cells, so I could be wrong. I remember having to hard reset several times
after the first install. Something to look at anyway.
-- Ron Hunter-Duvar
So it can be the monitor indeed... Thanks for the info, I'll try another one. The monitor doesn't detect if my mac turns it off to save energy (it displays "No signal" and then turns on standby, so no problem with that on Mac OS). Maybe linux doesn't like that.
-Leen
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