Screensaver
Sooooo relaxing, but unfortunately if you leave your screensaver on for too long, your fish may boil due to global warming.

Screensavers causing massive global pollution: Telstra

Alex Kidman
04 June 2008, 10:50 AM


Lose the animated logo, save the planet. At least, that's the theory, according to Australia's new eco-warrior, Telstra.


Midnight, is, according to ancient lore, the witching hour. It's when ghouls, ghosts and computer viruses are at their most potent; a time of ill feelings and odd superstitions. And, as it transpires, if you were a Telstra employee working a bit of overtime last Monday, also the time you may have found your screen going black.

No warding of ghoulies or goblins here, however -- it's part of a company initiative to go green, by eliminating a standardised Telstra screensaver -- replete with company-affirming messages -- and replacing it with a black screen.

According to a Telstra release, at midnight on Monday, corporate screensavers were removed from all Windows XP employee laptops and desktop computers, and replaced with a black, power-saving screensaver. Which at least confirms which side of the Windows Vista fence that Telstra sits on.

The release notes that "Originally, screensavers were designed to conserve older computer screens that would be damaged by leaving the same areas illuminated for long periods. However modern screens don't require these measures. Over time screensavers have been used predominantly for entertainment and communication."

This begs the obvious, environmentally friendly question (at least for the desktop machines) -- why not just switch the screens off entirely, and save even more power.?

Still, every bit does count, and when you're a company of Telstra's size, you get a lot of bits to count, and energy to save. Telstra estimates the removal of screensavers from 36,000 computers will result in a cut of around 646 tonnes of CO2 annually -- the equivalent, Telstra claims, of removing 140 cars from Australian roads for a year.

When you consider -- on a global scale -- how many company and personal computers have animated logos, Sports Illustrated models, swirling patterns or away-from-my-desk messages, the potential to save on pollution by switching off screensavers is actually quite immense.

Telstra's Property Director Mr Vito Chiodo is quoted as saying that "Screensavers use as much energy as a full screen of work and also require considerable processing energy. This change enables us to maintain our existing computer security levels, while still reducing our energy use through a black screen". We'd never thought of screensavers as a specific security risk, and have to wonder how interactive Telstra's previous screensaver was if it was using considerable processing energy. (We have a seen a game of "Whack-a-Sol" online that was done in Flash and very interactive, however, we doubt this would have been the officially sanctioned screensaver.)

One interesting green plaudit that Telstra claims is that it's Australia's biggest user of solar power, with 10,693 solar powered sites nationally. These include everything from exchanges all the way down to pay phones. The release didn't note if the payphones were actually functional and not covered in grafitti, or jammed up with chewing gum, however it might explain why your phone goes a bit funny at night time if you're covered by a solar exchange.

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Potoroo (User):

"wonder how interactive Telstra's previous screensaver was if it was using considerable processing energy"

Obviously today's computers are so powerful a mere screen saver shouldn't consume exorbitant amounts of power, but I'm reminded of the days when NT Server was first released. It seems every man and his dog immediately turned on the OpenGL 3D Pipes screensaver, which admittedly was highly impressive back then. Unfortunately it consumed nearly 100% of the available CPU when it ran. I found it enormously gratifying to be able to walk onto a customer site whose server had ground to a halt, turn any OpenGL screensaver off, and go and have a cup of tea while the customer went into raptures because his server was responding again. If only every call was so easy.

04 June 2008, 1:27 PM (3 years ago)report abuse Send to a friend reply

Cookie (New user):

Oh,boy! Must be doing something right , myself !?! Been using a 'black screen' screen-saver , from Day 1. And I've been using computers , now, for over 10 years. I just set the Power Time , for 15 minutes , and if I am not using computer by then , the monitor goes into 'Stand-by' mode. A 'nudge' of the mouse , even a tremour , and the screen's awake, again.
Never did like using screen-savers, to begin with.
In a 'work enviroment' , 15 minutes (well) is too long.
Wonder what Telstra will say , if a person is 'away' from their computers....for that long ?
I've heard...of Telstra using GPS 'tracker units'....in their Repair crewes vehicles....to 'monitor' their Productivity Level,Hmmmmmm !?!
What will they (Telstra) do next ?????
Ask their employees, to bring in a 'potty'.....to save on their 'toilet-breaks'?

04 June 2008, 3:58 PM (3 years ago)report abuse Send to a friend reply

Tin (Regular user):

So do Telstra ask employees to turn their computers off at night, or are they the kind of place that says to leave them on (so they can roll out changes like this power saving one)?

04 June 2008, 6:01 PM (3 years ago)report abuse Send to a friend reply

David Johnston (New user):

What?!?! I hope that they mean "stand by", or that they are all still using CRTs. Because if they are switching LCDs to black then they are *increasing* the power they use.

LCDs are a *subtractive* technology, beginning with the white light from the backlight, be it fluorescent or LED, colours are filtered from the spectrum leaving only that colour which is to be displayed. Thus to produce black, all of the LCD filters are *on* in a maximum state to subtract all of the colours from the white spectrum--hence using *more* power. CRTs and plasmas use less power when displaying black, but since nearly everybody uses an LCD display with their computer, power saving efforts like this (and the "Black Google") produce the opposite effect.

To add to this, anyone with an LCD display should be using a screen saver that goes to white, not to black. LCDs that display black for long periods of time, not only use more power, but may also suffer from "persistence", a temporary condition that lowers the contrast of the display. In any case the power management system of your computer should switch off the entire display--backlight and LCD filters.

04 June 2008, 6:34 PM (3 years ago)report abuse Send to a friend reply

Raindog (User):

646 tonnes of CO2, is about the average emission from a single Phill Burgess rant of ideology.

If Telstra were truly serious about saving the planet ant wanted to do their bit to reduce emissions then they would not be stifling every effort to distribute affordable broadband throughout the Nation.

The energy saved annually by enabling just one telecommuter in the outer burbs or regional centres would show this Telstra screen-saver palaver to be the sad and ill conceived PR exercise it really is.

The only thing green at Telstra is Sol's envious desire to pocket other peoples money!

Update: It appears Telstra never sleeps when it comes to ways to save the planet, and they are on the verge of conquering perpetual motion. It must have been worth the use of all those forest product to alert me via glossy brochure of their new environmentally friendly "battery operated battery chargers", and the stockpile of disposable batteries going into landfill must be a tiny price to pay to keep those nextG handsets on air and ready to receive announcements of further Telsta planet savers.



04 June 2008, 8:07 PM (3 years ago)report abuse Send to a friend reply

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