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Re: Blank screen bug




On Tue 10 Oct 2017 at 21:45:29 (+0200), Tim wrote:

> I experience this bug in jessie as well. However, that bug got fixed in
> stretch. The bug I'm now facing is random (short) periods of a
> black/blank screen. Just as anxiousmac nicely summarized said before:

[…]

> I will try this, although I'm not exactly sure how this would help as
> 90% of the time the screen display works fine.
> 
> By now I also have a bit more experience with switching to a virtual
> console when this occurs, but alas, this doesn't seem to influence the
> blank screen in any way.

Hope for the best and prepare for the worst.

This old Dell has a semi-permanent problem resembling this. The screen
works normally for about one second on the POST, and again whenever
you press a key after the screen had blanked. So it's only usable with
a VGA monitor connected. However, the monitor doesn't display the CMOS
screen which limits options.

The rest of the time, the display is trying to work, odd flickers can
be seen as it switches modes, and once X is running it's just possible
to make out a glimmer from windows that have white backgrounds.

I can only think that it's a firmware/hardware bug. A blown capacitor
is the first thing that spring to mind.

Cheers,
David.