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Check if your IKEA chair is compatible with your screen

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Re: Check if your IKEA chair is compatible with your screen

#202

Earlier quoted context omitted.

sometimes when manipulating 3D CAD models, I can get a similar noise from my graphics card / monitor at certain orientations of the model sweeping back and forth as I rotate it I have a feeling that grey #A5A5A5 is row-hammering something

Same here; my PC GPU would make a high-pitched whine in certain conditions, most often encountered in a CAD program when I was rotating things around. I assumed it's the dark-grey coordinate system / grid on lighter-grey background making some kind of digital equivalent of Moiré patterns on the traces in the GPU card, that happen to generate an audible frequency.

It could be the view is rendered on mouse event, which would mean rendering with fluctuating 125/250/500/1000 fps during view movements.

Re: Check if your IKEA chair is compatible with your screen

#203
post #3

Remotely related, my screen makes a noise, somewhere between static and a whine, while displaying certain text files. Minimizing or closing the editor stops the noise, getting the text back on display restores the noise. I suppose it's some sort of resonance phenomenon.

Perhaps a silly question, but does turning it off and back on again also resolve the problem? I can occasionally hear such noises from monitors, and have always thought it was some kind of interaction with the phase of the AC power and some kind of internal physics of the monitor. Generally, turning it off and back on again fixes it for me.

I realize now I have never thought to keep track of a sample which triggers the phenomenon, and I can't really find time to probe for one right now.

I'm not entirely certain, but as I recall it switching it off and back on again is not effective against this issue. I've tried, no doubt, but the only thing noted which seems to have an effect (while the screen is active) is removing the text from display.

Re: Check if your IKEA chair is compatible with your screen

#204
post #96
post #3

Remotely related, my screen makes a noise, somewhere between static and a whine, while displaying certain text files. Minimizing or closing the editor stops the noise, getting the text back on display restores the noise. I suppose it's some sort of resonance phenomenon.

Is this a Samsung G-series (G7/G9)? I returned a G7 that would make a high pitched noise and also dim the entire screen when certain patterns displayed. It also did this very strange 'interlacing' behavior which was apparently a known problem with Samsung monitors. Maybe something similar for you.

In my case it's an LG monitor from the early 2010s (IPS). Now that you mention it, there might be a slight flicker and dimming effect on mine as well when it happens, but if so, not very salient compared to the noise.

Re: Check if your IKEA chair is compatible with your screen

#206
post #121

Earlier quoted context omitted.

Reminds me of woz's apple video on ESD: https://youtu.be/hLOQ7zOWGAA Personally I remember having a pickup truck with a velour seat. During winter I would slide off the seat at a gas station and the first thing I would tough would be the gas pump handle - ZAAAP. Not what you want at a gas station!

That’s why in Europe the gas nozzle doesn’t have the little lock - It requires that you keep pressing it. So that you avoid going back to the car, charging static, coming back to the nozzle and having a spark.

It's really mind blowing learning the reason behind some design "flaws", which clearly aren't flaws

Re: Check if your IKEA chair is compatible with your screen

#208

I once had the problem that running make with too many parallel jobs (-j) would change my keyboard layout. The machine was some laptop mainboard glued to the backside of my monitor, and the USB socket came out at the top of the mainboard. On its way down, the USB cable for the keyboard passed across the whole mainboard. On high load, the mainboard created enough interference to cause the connection to reset, re-hotpl…

My layout resets every time I start chromium or sometimes I when I start terminal. It’s not external keyboard. Any ideas?

Re: Check if your IKEA chair is compatible with your screen

#209

This is nothing new, I solved this and a bunch of other things by wearing a tinfoil hat.

They are still watching you.

They can watch is very boring in there… me me me me mine mine mine i me mine and so on…

Re: Check if your IKEA chair is compatible with your screen

#210

Had the same issue a while back, had a hell of a time figuring out why one of my screens would flicker or shut off momentarily whenever my girlfriend sat down at her desk (which is next to mine). Even initially figuring out that it was the act of her sitting down that caused it took some time, with a lot of jokes about her telepathically messing with my setup in the meantime. Turns out that the gas piston in her chai…

Most off the monitors and chairs in our office had this problem, no one could figure it out for ages
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