Hey Stewart, Thank you, I'd like to borrow your ColorHug and I'll contact you off the list about it. Not matching color profile of a dual screen setup have been bane of my existence, for any dual screen setup I managed to experience, I've seen not-so-slightly matching color temperature that I could never adjust. I assumed that I've been getting screens from different batches and there's nothing I could do about that; also my knowledge of color profiles is really dated -- I thought it was something really expensive, finicky and doesn't work for Linux. Alex. On 2018-02-27 05:01 PM, Stewart Russell via talk wrote:
On 27 February 2018 at 16:08, Alex Volkov via talk <talk@gtalug.org <mailto:talk@gtalug.org>> wrote:
What is the procedure for calibration? is there a way to do it in Linux? Do I need a special device for that?
Yes, you need a device, but the procedure is simple. I can lend you my ColorHug, a display calibrator that runs *only* under Linux. Takes about 20 minutes to do a full calibration per screen. It spits out an ICC profile that (should) be automatically picked up by your display manager. Picky types recalibrate frequently. I do it annually, at best.
Most displays come set way too cold, so whites are blue-white out the box. Your display will look a bit pink for a while until you're used to it, but you should notice you can see a bunch more brightness levels. If you're running a dual-monitor setup, make sure you calibrate them both - having one eye-searing cold blue and the other warmer looks terrible.
Stewart
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