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1. Mike Gerwitz (mikegerwitz@social.mikegerwitz.com)'s status on Sunday, 03-Dec-2017 14:06:42 EST Mike Gerwitz
   #X200 users: has anyone noticed a very loud high-frequency noise coming from the inverter when the monitor brightness is below max? It's not CPU frequency scaling noise---I hear that too. I'm unfortunately rather sensitive to high-frequency noises. I'm having trouble determining if this is a common issue with X200s.
   
   If so, has anyone tried replacing the inverter, and had success in resolving the issue? I don't want to spend the money if it's not going to work. But I want to figure out something. Even if that involves hardware hacking.
   
   On the upside, I do have #GuixSD running and everything's going pretty well!
   1. lnxw48a1 (lnxw48a1@nu.federati.net)'s status on Sunday, 03-Dec-2017 14:18:47 EST lnxw48a1

      in reply to
      @mikegerwitz Probably not this, but with the old NTSC TVs I used to hear a high pitch whenever the screen went dark, such as leading into a commercial. As I got older, my hearing declined, so that the noise was barely noticeable anymore.
   2. Bob Jonkman (bobjonkman@gs.jonkman.ca)'s status on Sunday, 03-Dec-2017 17:49:01 EST Bob Jonkman

      in reply to
      The monitor on my laptop (HP ProBook 6560b) is dying, and the squealing has been getting worse. Now there are two burned-out lamps (LEDs? Fluoroscents?) at the right side; I can sometimes force them on by cycling the power to the screen (using the Fn+F4 hotkey to cycle between monitor settings). When the bad lamps come on again the squealing is louder. I think it may be capacitor plague.
      1. Mike Gerwitz (mikegerwitz@social.mikegerwitz.com)'s status on Monday, 04-Dec-2017 20:43:22 EST Mike Gerwitz

         in reply to
         @bobjonkman Interesting. That makes me wonder if the best way to resolve this issue is to replace both the inverter _and_ the panel itself.
         
         But I don't really want to spend that money when I just bought the X200.
   3. Kei Kebreau (kkebreau@quitter.se)'s status on Monday, 04-Dec-2017 18:41:08 EST Kei Kebreau

      in reply to
      @mikegerwitz Yes, my X200 does the same thing!
      1. Mike Gerwitz (mikegerwitz@social.mikegerwitz.com)'s status on Monday, 04-Dec-2017 20:42:26 EST Mike Gerwitz

         in reply to
         @kkebreau Ah well I'm both sorry to hear that and relieved to hear that. :) Thanks for replying.
         
         @cwebber you have an X200 right? Do you experience any high-pitched noise when reducing the screen brightness?