Mac mini losing signal over vga when using adapter.

At my church we are installing 2014 Mac minis in the classrooms and occasionally when we power them up the main display works perfect but the projector which is plugged in through the mini display port to vga adapter the screen will just be blue like it does't have a signal. When I check in system preferences the computer shows both displays plugged in though. Powering off the projector doesn't fix the problem I have to manually unplug and replug in the adapter.

There is no limitation to get 16:9 out of VGA. How far away is the TV? What are you using for a cable? Do you get the result you want from a shorter cable?

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    1 ?? 0:00.08 /sbin/launchd -v
    23 ?? Ss 0:00.00 /sbin/dynamic_pager -F /private/var/vm/swapfile
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    32 ?? Ss 0:00.02 /usr/sbin/KernelEventAgent
    33 ?? Ss 0:00.38 /usr/sbin/mDNSResponder -launchdaemon
    34 ?? Ss 0:00.20 /usr/sbin/netinfod -s local
    35 ?? Ss 0:00.68 /usr/sbin/syslogd
    37 ?? Ss 0:01.31 /usr/sbin/configd
    38 ?? Ss 0:00.06 /usr/sbin/coreaudiod
    39 ?? Ss 0:00.06 /usr/sbin/diskarbitrationd
    40 ?? Ss 0:00.01 /usr/sbin/memberd -x
    41 ?? Ss 0:00.11 /usr/sbin/securityd
    42 ?? Ss 0:00.11 /usr/sbin/notifyd
    45 ?? Ss 0:00.29 /usr/sbin/DirectoryService
    47 ?? Ss 0:00.01 /usr/sbin/distnoted
    49 ?? Ss 0:00.94 /usr/sbin/update
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    57 ?? Ss 0:00.13 /System/Library/CoreServices/coreservicesd
    59 ?? Ss 0:00.73 /System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreGraphic s.framework/Resources/Wind
    60 ?? S 0:00.34 /usr/sbin/blued
    64 ?? Ss 0:00.06 /System/Library/Frameworks/ApplicationServices.framework/Frameworks/ATS.framewo rk/Support/ATSServer
    66 ?? Ss 0:00.11 /System/Library/CoreServices/mcxd.app/Contents/MacOS/mcxd -s
    69 ?? S 0:00.02 /System/Library/CoreServices/SecurityAgent.app/Contents/Resources/authorization host
    70 ?? S 0:00.90 /System/Library/CoreServices/SecurityAgent.app/Contents/MacOS/SecurityAgent
    76 ?? Ss 0:00.00 /usr/libexec/crashreporterd
    114 ?? Us 0:00.30 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework /Versions/A/Support/mds
    132 ?? Ss 0:00.10 ntpd -f /var/run/ntp.drift -p /var/run/ntpd.pid
    146 ?? Ss 0:00.00 nfsiod -n 4
    154 ?? Ss 0:00.00 rpc.statd
    156 ?? Ss 0:00.01 /usr/sbin/portmap
    157 ?? Ss 0:00.01 rpc.lockd
    160 ?? S 0:00.00 rpc.lockd
    173 ?? Ss 0:00.00 mountd
    176 ?? Ss 0:00.00 nfsd-master
    177 ?? S 0:00.00 nfsd-server
    179 ?? S 0:00.00 nfsd-server
    180 ?? S 0:00.00 nfsd-server
    181 ?? S 0:00.00 nfsd-server
    182 ?? S 0:00.00 nfsd-server
    183 ?? S 0:00.00 nfsd-server
    184 ?? Ss 0:00.02 /usr/sbin/automount -f -m /Network -nsl -mnt /private/var/automount
    188 ?? Ss 0:00.01 /usr/sbin/automount -f -m /automount/Servers -fstab -mnt /private/Network/Servers -m /automount/static -s
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    234 ?? S 0:00.19 /usr/sbin/sshd -i
    238 ?? S 0:00.11 /usr/sbin/sshd -i
    277 ?? SNs 0:00.17 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework /Versions/A/Support/mdimpo
    282 ?? Ss 0:00.01 /usr/sbin/lookupd
    239 p0 Ss 0:00.05 -bash
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    </pre>
    TV connected (look for PIDs 53 and 54 at end of the list):
    <pre>
    PID TT STAT TIME COMMAND
    1 ?? 0:00.05 /sbin/launchd
    23 ?? Ss 0:00.00 /sbin/dynamic_pager -F /private/var/vm/swapfile
    27 ?? Ss 0:01.35 kextd
    32 ?? Ss 0:00.02 /usr/sbin/KernelEventAgent
    33 ?? Ss 0:00.30 /usr/sbin/mDNSResponder -launchdaemon
    34 ?? Ss 0:00.13 /usr/sbin/netinfod -s local
    35 ?? Ss 0:00.71 /usr/sbin/syslogd
    37 ?? Ss 0:00.49 /usr/sbin/configd
    38 ?? Ss 0:00.07 /usr/sbin/coreaudiod
    39 ?? Ss 0:00.06 /usr/sbin/diskarbitrationd
    40 ?? Ss 0:00.01 /usr/sbin/memberd -x
    41 ?? Ss 0:00.14 /usr/sbin/securityd
    42 ?? Ss 0:00.07 /usr/sbin/notifyd
    44 ?? Ss 0:00.17 /usr/sbin/DirectoryService
    45 ?? Ss 0:00.01 /usr/sbin/distnoted
    50 ?? Ss 0:08.36 /usr/sbin/update
    59 ?? Ss 4:43.49 /System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreGraphic s.framework/Resources/Wind
    60 ?? S 0:00.33 /usr/sbin/blued
    61 ?? Ss 0:00.14 /System/Library/CoreServices/coreservicesd
    65 ?? Ss 0:00.07 /usr/sbin/lookupd
    79 ?? Ss 0:00.88 ntpd -f /var/run/ntp.drift -p /var/run/ntpd.pid
    93 ?? Ss 0:00.00 nfsiod -n 4
    101 ?? Ss 0:00.00 rpc.statd
    102 ?? Ss 0:00.01 /usr/sbin/portmap
    104 ?? Ss 0:00.01 rpc.lockd
    109 ?? Ss 0:00.06 slpd -f /etc/slpsa.conf
    110 ?? S 0:00.00 rpc.lockd
    115 ?? Ss 0:00.00 /usr/libexec/crashreporterd
    135 ?? Ss 0:00.05 /System/Library/Frameworks/ApplicationServices.framework/Frameworks/ATS.framewo rk/Support/ATSServer
    158 ?? Ss 0:00.12 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework /Versions/A/Support/mds
    164 ?? Ss 0:00.00 mountd
    167 ?? Ss 0:00.00 nfsd-master
    168 ?? S 0:00.00 nfsd-server
    169 ?? S 0:00.00 nfsd-server
    170 ?? S 0:00.00 nfsd-server
    172 ?? S 0:00.00 nfsd-server
    173 ?? S 0:00.00 nfsd-server
    174 ?? S 0:00.00 nfsd-server
    175 ?? Ss 0:00.02 /usr/sbin/automount -f -m /Network -nsl -mnt /private/var/automount
    179 ?? Ss 0:00.01 /usr/sbin/automount -f -m /automount/Servers -fstab -mnt /private/Network/Servers -m /automount/static -s
    196 ?? S 0:00.20 /usr/sbin/sshd -i
    200 ?? S 0:00.06 /usr/sbin/sshd -i
    205 ?? SNs 0:00.14 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework /Versions/A/Support/mdimpo
    201 p0 Ss 0:00.03 -bash
    209 p0 R+ 0:00.00 ps -axw
    2 ?? Ss+ 0:00.03 sh /etc/rc
    53 ?? S+ 0:00.02 /usr/libexec/WaitingForLoginWindow
    54 ?? S+ 0:00.04 /usr/libexec/WaitingForLoginWindow
    </pre>
    Mac Mini   Mac OS X (10.4.8)  

    A PRRAM reset did the trick.
    http://docs.info.apple.com/article.html?artnum=2238
    This Mac mini is a refurbished one, so probably had some old settings from being connected to something different before.
    The TV now is recognized properly as 'Philips FTV'.
    Marc

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