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Ask Slashdot: Does LED Backlight PWM Drive You Crazy?

mikey573 LCD Flicker test (532 comments)

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.

about a year and a half ago

Persistent Terminals For a Dedicated Computing Box?

mikey573 freenx / nxserver (288 comments)

For persistent GUI sessions, I generally use nx/nxserver/freenx:

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.

more than 6 years ago



mikey573 mikey573 writes  |  more than 8 years ago

mikey573 writes "10 years ago today I founded the Videogame Music Archive on a small little corner of Geocities. Along the way, other staff members joined the fun, and the site has grown year after year. Our hit counter died a while ago, but according to Google Adsense, we had over 25 million page impressions over the past year! We're older than Google (8 years old), Wikipedia (5 years old), and even Slashdot (9 years old). Our dynamic community of volunteer staff, sequencers, forum patrons, and general visitors have kept us going strong! To show our appreciation, we are conducting our largest giveaway to date: one lucky winner can get the Top 10 Albums at GameMusic.com!"


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