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Re: Wheezy: monitor signal lost when leaving X

Siard (shiems146@kpnplanet.nl on 2011-05-19 19:48 +0200):
> Hi,
> I upgraded Squeeze to Wheezy.
> After logging out of X (no matter which desktop or window manager) the
> screen goes black, the monitor signal gets lost, its green light turns
> to yellow. The only way to get out of this situation is by pressing
> the reset button.
What graphics card/video driver are you using? Does it also happen if
you press ctrl-alt-f1 while logged in in X? Can you access the machine
via the network?

> So I tried a new installation of Wheezy, using the debootstrap method
> as described in www.debian.org/releases/stable/i386/apds03.html.en .
> But again, the same phenomenon.
> Any idea what the problem could be?
I've had similar problems with my Ati r300-based card. It came down to
incorrect refresh rates because of EDID (monitor probing) failures. On
another machine (with Intel 915 chipset) I can't use kernel modesetting
at all because the monitor lies about the resolutions it supports.
There are kernel command line options to force a certain console
mode/resolution, but they vary per driver.

> Since mouse + keyboard did not work in X, I deleted /run, which fixed
> that. Could this have something to do with it?
Not likely. Also, look in the archives for a better solution (it has
been posted somewhere in the last week), or search the Internet for


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