Yosemite and Multiple Displays

I just upgraded a late '12 Mac Mini to Yosemite and am now having some considerable difficulty utilizing TWO Video Output options simultaneously. With 10.8.5 I have been using my Thunderbolt port to adapt to VGA, which goes to a Star-Tech KVM and then to a professional 1920x1080 monitor, while at the same time utilizing the HDMI port to connect to an AJA HA5 convertor (which adapts that video signal to SDI).. Everything worked seamlessly before this upgrade. Using exactly the same hardware my current problem is that my Mini(s) now fails to correctly recognize my monitor that is down the line from the Thunderbolt to VGA adaptor. That monitor now only gets recognized at some pathetically useless lower resolution, while the HDMI video Out seems to work just fine. In fact, the HDMI out is what the Mini now prefers. WHY??? I likely am missing something, I know.... The Displays Preference is sheer misery to navigate between the two and I have thus far failed to get the two monitors (well, one is actually an SDI router with multiple monitors down the line... and that is from the HDMI Out, which gets converted) to work the same way twice after a re-start. I spent a few hours feeling helpless today. Tomorrow I will do the VRAM reset that I saw as the only sincere Apple solution on an earlier Discussion Group from November (forgot to do that today), but I am not so hopeful. Anyone?

fyi...
I paid up for the Advanced Docking Station, and found the T400's CD- drive is not compatible.
http://forums.lenovo.com/lnv/b...
Also, I bought this computer because it is quiet. The Advanced Dock is NOISY.
Lenovo support was NOT helpful with these issues.They should disclose incompatibilities and issues like noise upfront. The t400 is marketed as a quiet computer... And how am I to know the drive bays are not compatible? 

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    27 Oct 2014 8:12:29 pm syslogd[17]: Configuration Notice:
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    27 Oct 2014 8:12:29 pm syslogd[17]: Configuration Notice:
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    27 Oct 2014 8:12:29 pm syslogd[17]: Configuration Notice:
    ASL Module "com.apple.ical" claims selected messages.
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    27 Oct 2014 8:12:29 pm syslogd[17]: Configuration Notice:
    ASL Module "com.apple.icloud.FindMyDevice" claims selected messages.
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    27 Oct 2014 8:12:29 pm syslogd[17]: Configuration Notice:
    ASL Module "com.apple.install" claims selected messages.
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    27 Oct 2014 8:12:29 pm syslogd[17]: Configuration Notice:
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    27 Oct 2014 8:12:29 pm kernel[0]: AppleACPICPU: ProcessorId=8 LocalApicId=255 Disabled
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    27 Oct 2014 8:12:29 pm kernel[0]: Copyright (c) 1982, 1986, 1989, 1991, 1993
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    27 Oct 2014 8:12:29 pm kernel[0]: [ PCI configuration end, bridges 12, devices 17 ]
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    27 Oct 2014 8:12:29 pm kernel[0]: mcache: 4 CPU(s), 64 bytes CPU cache line size
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    27 Oct 2014 8:12:29 pm kernel[0]: rooting via boot-uuid from /chosen: 86F7AE8B-06AF-32E7-AF82-3CFDF274A0D2
    27 Oct 2014 8:12:29 pm kernel[0]: Waiting on <dict ID="0"><key>IOProviderClass</key><string ID="1">IOResources</string><key>IOResourceMatch</key><string ID="2">boot-uuid-media</string></dict>
    27 Oct 2014 8:12:29 pm kernel[0]: com.apple.AppleFSCompressionTypeZlib kmod start
    27 Oct 2014 8:12:29 pm kernel[0]: com.apple.AppleFSCompressionTypeDataless kmod start
    27 Oct 2014 8:12:29 pm kernel[0]: com.apple.AppleFSCompressionTypeZlib load succeeded
    27 Oct 2014 8:12:29 pm kernel[0]: com.apple.AppleFSCompressionTypeDataless load succeeded
    27 Oct 2014 8:12:29 pm kernel[0]: AppleIntelCPUPowerManagementClient: ready
    27 Oct 2014 8:12:29 pm kernel[0]: FireWire (OHCI) Lucent ID 5901 built-in now active, GUID 003ee1fffe0c6820; max speed s800.
    27 Oct 2014 8:12:29 pm kernel[0]: Got boot device = IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleIntelPchS eriesAHCI/PRT0@0/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOB lockStorageDriver/ST31000528AS Media/IOGUIDPartitionScheme/Customer@2
    27 Oct 2014 8:12:29 pm kernel[0]: BSD root: disk0s2, major 1, minor 2
    27 Oct 2014 8:12:29 pm kernel[0]: USBMSC Identifier (non-unique): 000000009833 0x5ac 0x8403 0x9833, 2
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    27 Oct 2014 8:12:29 pm kernel[0]: 2.038506: ath_get_caps[4019] tx chainmask mismatch actual 7 sc_chainmak 0
    27 Oct 2014 8:12:29 pm kernel[0]: 2.042249: Atheros: mac 448.3 phy 3205.6 radio 0.0
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    27 Oct 2014 8:12:30 pm kernel[0]: bpfAttach len 64 dlt 12
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    27 Oct 2014 8:12:38 pm discoveryd[48]: Basic Bonjour,Warn Warning: IPv6 listener multicast send failed en1, 49
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    27 Oct 2014 8:12:41 pm WindowServer[112]: Session 257 released (1 references)
    27 Oct 2014 8:12:41 pm kernel[0]: en2: promiscuous mode enable succeeded
    27 Oct 2014 8:12:41 pm kernel[0]: en3: promiscuous mode enable succeeded
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    27 Oct 2014 8:12:41 pm WindowServer[112]: init_page_flip: page flip mode is on
    27 Oct 2014 8:12:41 pm WindowServer[112]: Found 26 modes for display 0x00000000 [26, 0]
    27 Oct 2014 8:12:41 pm WindowServer[112]: Found 1 modes for display 0x00000000 [1, 0]
    27 Oct 2014 8:12:41 pm WindowServer[112]: Found 1 modes for display 0x00000000 [1, 0]
    27 Oct 2014 8:12:41 pm WindowServer[112]: Found 1 modes for display 0x00000000 [1, 0]
    27 Oct 2014 8:12:41 pm WindowServer[112]: Found 1 modes for display 0x00000000 [1, 0]
    27 Oct 2014 8:12:41 pm WindowServer[112]: Found 1 modes for display 0x00000000 [1, 0]
    27 Oct 2014 8:12:41 pm WindowServer[112]: mux_initialize: Couldn't find any matches
    27 Oct 2014 8:12:41 pm WindowServer[112]: Found 26 modes for display 0x00000000 [26, 0]
    27 Oct 2014 8:12:41 pm WindowServer[112]: Found 1 modes for display 0x00000000 [1, 0]
    27 Oct 2014 8:12:41 pm WindowServer[112]: Found 1 modes for display 0x00000000 [1, 0]
    27 Oct 2014 8:12:41 pm WindowServer[112]: Found 1 modes for display 0x00000000 [1, 0]
    27 Oct 2014 8:12:41 pm WindowServer[112]: Found 1 modes for display 0x00000000 [1, 0]
    27 Oct 2014 8:12:41 pm WindowServer[112]: WSMachineUsesNewStyleMirroring: false

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