It has to do with Windows shutting off sounds.  They assume that if you put 
your monitor to sleep surely you want all of your sound devices to sleep 
too.That's why I use the power button on the monitor and have no problems that 
way.
Microsoft has no concept of audio other than speakers and headphones.  Been 
trying to get them to put a "leave this audio device alone" checkbox or such.  
No joy and probably never will be since we hams number in the 10's of thousands 
compared to the millions of speaker/headphone people.
Mike W9MDB

 

    On Wednesday, May 27, 2020, 08:47:14 AM CDT, Bill Somerville 
<g4...@classdesign.com> wrote:  
 
  Hi Steve, 
  I am not exactly sure how to stop it happening, but an HDMI monitor going to 
a power saving mode causes USB devices to be re-enumerated. That happens 
without WSJT-X getting any notification, and a selected USB audio device can 
suddenly become a different device. It may be something to do with HDMI 
providing a USB capability. 
  73
 Bill
 G4WJS. 
  On 27/05/2020 01:45, Steve Sacco wrote:
  
 Hi Bill - 
  Yes, it is connected to HDMI. 
  73, Steve NN4X 
   
  On Tue, May 26, 2020 at 6:45 PM Bill Somerville <g4...@classdesign.com> wrote:
  
On 26/05/2020 23:38, Steve Sacco wrote:
 > After holding back on trying out v2.2.0-rc1, I finally installed it.  
 > It was right around Microsoft Patch Tuesday, IIRC, but don't recall 
 > whether it  was prior to applying those latest patches, or not.
 >
 > Ever since, I've noted that whenever my PC turns off my screen (as 
 > part of the power management settings - and note that I have "When 
 > plugged in, PC goes to sleep after Never" set), WSJT-X loses the 
 > output audio setting, although it is still set correctly in the 
 > drop-down box - and transmits through my speakers.
 >
 > If I simply shut down WSJT-X, and start it back up, it immediately 
 > works correctly.  This is 100% repeatable.
 >
 > I presume this is a WSJT-X v2.2.0 issue, and not a Windows 10 problem, 
 > as all other software I'm running seems to be working fine.
 >
 > Please let me know what I can do to assist.
 >
 > 73,
 > Steve
 > NN4X
 > EL98jh
 
 Hi Steve,
 
 is your monitor connected via HDMI?
 
 73
 Bill
 G4WJS.
  
 

 
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