Bug#787279: d-i screen blanking (more info)
On 11 May 2016 at 09:09, Philip Hands <phil@hands.com> wrote:
> Philipp Kern <pkern@debian.org> writes:
>
> Do modern screens still actaully suffer from burn-in?
>
To my knowledge only screens with a phosphorus layer do, and the only
modern (and recently no longer manufactured) ones are plasma TVs...and
those eventually suffer loss of contrast or faded black level because
they burn the whole screen so that the background region has the same
black point as the burnt-in region.
In my opinion, older LCDs with CCFL backlighting are the issue,
because their life is measured in on/off cycles. CCFL screens were
still being manufactured in 2008. Here's a decent, but old (with dead
links) article on the topic:
https://gblargg.wordpress.com/2009/09/30/ccfl-lcd-backlight-lifespan/
https://www.google.com/search?q=CCFL%20life%20on%20off%20cycle%20lcd&rct=j
> Do we realistically expect to do significant damage to the screen (or
> the environment) by very occasionally leaving a screen on for 12/24 hours?
I don't think so, especially if LED backlit LCDs are the norm... In
an ideal world where hardware standards were truly and ubiquitously
implemented we could use DDCcontrol to dim any connected screen. This
would solve burn-in for CRT/plasma/phosphorus layer screens, this
would maximize the useful life of CCFL backlit LCDs, and this would
benefit the planet in a small way. ;-)
Honestly, I wish DDCcontrol got more love, because in theory all
decent commonly-available x86 hardware made post-1999 should support
it--LVDS connected displays excepted.
Cheers,
Nicholas
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