Solved drop-down lists transparent, only on 2d monitor

[dojibear]

I have a GeForce GT 520 video card. My main monitor is Acer S242HL. Second monitor is older Samsung SyncMaster 2253LW.

On main monitor drop-down lists (such as Google search gives you as you type) show normal. On second monitor they become transparent after a moment, so as you type each letter you see a flash then it seems to be gone.

Move the same web page back and forth between windows to get the two different behaviors. Strange.

Note if relevant Windows sees the second monitor as "generic PnP monitor".

 

[dojibear]

The solution is to disable (uncheck) hardware acceleration for the monitor with the problem. Exactly where you do that is unclear (it's been a week since I did this -- sorry).