5K iMac Boot Camp'd into Windows 10. Connected a Thunderbolt Display as a second screen. How do I control brightness for this secondary screen? It's a bit bright at the moment.
iMac Line (2012 and Later)
That's interesting: the C:\Windows\System32\runas.exe /trustlevel:0x20000 AppleControlPanel.exe command brought up a brightness control that *only* controls the secondary Thunderbolt Display. Was that the intention? If I pin that to my taskbar and close and try to re-launch if from taskbar, it comes up with that "You may not have privileges to change the startup disk" message again, unless I go into the shortcut properties and add "C:\Windows\System32\runas.exe /trustlevel:0x20000 AppleControlPanel.exe" and "run as Administrator."
Can you check the binaries used in each of these Services? Click on Properties to see the details.
AppleMobileDeviceService.exe
\system32\AppleOSSMgr.exe
\system32\AppleTimeSrv.exe
AppleMobileDeviceService.exe
\system32\AppleOSSMgr.exe
\system32\AppleTimeSrv.exe
From what I can see, the Services window seems to have only options for starting and stopping services, not creating them.
You will need to edit the corresponding Registry Entries.
control brightness on Thunderbolt Display connected to 5k iMac?
