If monitors are powered down, can't get a connection
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In our school's computer lab the the monitors will go into power save mode. When this happens, I can see the computers in Veyon Master but when I try to take control all I see is a black screen and the remote connection won't work, it just gets stuck with a black screen.
It would really help if, when a remote control is started, for Veyon to wake up the monitor so the remote session works. Kids bring their own keyboards and mice to class (for covid), so it is a pain to wake up the monitors manually when there are no mice or keyboards attached.
I don't know if this makes any difference, there is only one monitor but it is plugged into a Quadro p1000 graphics card and not the intel integrated graphics port, maybe with the monitor off the Veyon client is choosing the incorrect display device?
Thanks for any advice!
Stewart
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In our school's computer lab the the monitors will go into power save mode. When this happens, I can see the computers in Veyon Master but when I try to take control all I see is a black screen and the remote connection won't work, it just gets stuck with a black screen.
It would really help if, when a remote control is started, for Veyon to wake up the monitor so the remote session works. Kids bring their own keyboards and mice to class (for covid), so it is a pain to wake up the monitors manually when there are no mice or keyboards attached.
I don't know if this makes any difference, there is only one monitor but it is plugged into a Quadro p1000 graphics card and not the intel integrated graphics port, maybe with the monitor off the Veyon client is choosing the incorrect display device?
Thanks for any advice!
Stewart
This can be done with PowerShell.
Create the batch file wakemon.bat with the commands below.
= = = = = = = = = = = = = = = = = = = = = = = =
@ECHO OFFpowershell -NoProfile -NoLogo -Command "(Add-Type '[DllImport("user32.dll")]public static extern int SendMessage(int hWnd, int hMsg, int wParam, int lParam);' -Name a -Pas)::SendMessage(-1,0x0112,0xF170,-1)"
powershell -NoProfile -NoLogo -Command "$x=Add-Type '[DllImport("kernel32.dll")]public static extern void SetThreadExecutionState(uint esFlags);' -name System -namespace Win32 -passThru; $x::SetThreadExecutionState([uint32]"0x03"); Sleep 5; $x::SetThreadExecutionState([uint32]"0x40");"
:END
= = = = = = = = = = = = = = = = = = = = = = = =Copy wakemon.bat to each computer's C:\Windows folder.
Use Veyon's 'Run program' feature to wake the monitors of your selected computers by entering C:\Windows\wakemon.bat.
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This can be done with PowerShell.
Create the batch file wakemon.bat with the commands below.
= = = = = = = = = = = = = = = = = = = = = = = =
@ECHO OFFpowershell -NoProfile -NoLogo -Command "(Add-Type '[DllImport("user32.dll")]public static extern int SendMessage(int hWnd, int hMsg, int wParam, int lParam);' -Name a -Pas)::SendMessage(-1,0x0112,0xF170,-1)"
powershell -NoProfile -NoLogo -Command "$x=Add-Type '[DllImport("kernel32.dll")]public static extern void SetThreadExecutionState(uint esFlags);' -name System -namespace Win32 -passThru; $x::SetThreadExecutionState([uint32]"0x03"); Sleep 5; $x::SetThreadExecutionState([uint32]"0x40");"
:END
= = = = = = = = = = = = = = = = = = = = = = = =Copy wakemon.bat to each computer's C:\Windows folder.
Use Veyon's 'Run program' feature to wake the monitors of your selected computers by entering C:\Windows\wakemon.bat.
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