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Comment LCD Flicker test (Score 1) 532

I've been using CRT monitors since 1993. I can stare at them all day long as the refresh rate is 75 Hz or higher. At 60 Hz, my eyes get tired out pretty quickly.

As for LCD monitors, I bought one years ago for home use and had to sell it off on Ebay months later when I realized it was giving me eye strain (the effect is noticeable after a few minutes... strain at the temples). For the next 7 years, I avoided LCD monitors when possible, eventually becoming the last person in a 100+ person office to use still CRTs (since I didn't want to give them up at work or home). Even kept using CRT TVs. My theory at the time was fluorescent back lighting was the culprit, since fluorescent lights gave me similar eye strain. To my horror, I got a LED backlit LCD monitor at work and still got the same headaches/eyestrain.

Then one day I realized I was looking at my cell phone screen all the time with zero eyestrain (HTC Incredible, original version as when first released). I was puzzled, until I read that this particular model uses AMOLED display, which is different than normal TFT displays, since the pixels themselves provide the brightness.

Next, I searched to find a test which could stimulate my eye strain pretty quickly. Behold, the test: http://www.lagom.nl/lcd-test/inversion.php
This test creates eye straining flicker for me on regular LCD displays, but not on CRT and AMOLED displays. Hooray. Given this test, I've found some LCD laptop displays to be more bearable than others. For example, Apple Macbook Air (circa 2012) does pretty well on most of the Inversion Walk tests, but not all. My Dell Latitude E6430 (2013) does even better. So good, that I can use that laptop most of the day with its built in LCD screen. Hopefully I'll eventually find a LCD desktop monitor that does well with the Inversion Walk tests. In the meantime, I dream of color e-ink with fast response times, or an affordable AMOLED monitor.

On a side note: older compact fluorescent bulbs gave me similar eye strain. Seems the newest generation of bulbs are bearable, so hopefully I don't have to hoard 60 W incandescents if/when they are banned.

Earth

The Inexact Science of Carbon Neutrality 302

snydeq writes "Sustainable IT's Ted Samson raises questions regarding the purchasing of carbon offsets, a practice growing in popularity among tech companies such as Dell, Yahoo, and Google in an attempt to achieve 'carbon neutrality.' Essentially financial instruments, carbon offsets enable companies to invest money in sustainable endeavors in an attempt to counteract the carbon footprint they incur conducting their business. But as a recent article in the Wall Street Journal shows, measuring the value of these carbon offsets is tricky business, as some recipients of offsets say the results of their sustainable efforts would be achieved regardless of any one company's investment. 'The question of whether carbon offsets hold value just scratches the surface of the overall carbon-neutrality question,' Samson writes. 'For the time being, there isn't even a consistent approach to measuring an organization's carbon footprint in the first place. And if you don't know how much CO2 you're responsible for, how do you know how much offsetting is necessary to become neutral?'"

Comment freenx / nxserver (Score 5, Informative) 288

For persistent GUI sessions, I generally use nx/nxserver/freenx:
http://freenx.berlios.de/

For console sessions, nothing beats "screen". I use the command "screen -m -R" to create and/or reconnect to an existing session.

I used to like VNC, but I got tired of how difficult it was to set up. On Windows boxes, I stick to Remote Desktop Connection.

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