Mid-2010 macbook pro mini display port to hdmi works only intermittently

Question

I have a 13-inch mid-2010 MacBook Pro running OS X 10.10.2.  HDMI out from mini displayport to my Dynex TV only intermittently works.  The times that I have gotten it to work involves a combination of restarting the computer, unplugging the TV and plugging it back in, then plugging in the MDP adapter.  Now when I plug it in, the MacBook screen flashes black like it is trying to detect the external display, but no picture on the TV.  Any help would be appreciated.

Answer 1

Here is the console log output when I plug in the adapter:
1/31/15 10:36:47.582 PM WindowServer[443]: Received display connect changed for display 0x3f003d
1/31/15 10:36:47.582 PM WindowServer[443]: Found 1 modes for display 0x003f003d [1, 0]
1/31/15 10:36:47.594 PM WindowServer[443]: Display 0x042732c0: GL mask 0x1; bounds (0, 0)[1280 x 800], 18 modes available
Main, Active, on-line, enabled, built-in, boot, OpenGL-accel, Vendor 610, Model 9ccb, S/N 0, Unit 0, Rotation 0
UUID 0x4f159f59a71d63aefce94e26fc6d6edd, ColorSpace { 2068752606 }
1/31/15 10:36:47.594 PM WindowServer[443]: GLCompositor: GL renderer id 0x0102261a, GL mask 0x00000003, accelerator 0x0000429b, unit 0, caps QEX|MIPMAP, vram 256 MB
texture max 8192, viewport max {8192, 8192}, extensions NPOT|GLSL|FLOAT
1/31/15 10:36:47.594 PM WindowServer[443]: Display 0x003f003f: GL mask 0x4; bounds (2304, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 2, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
1/31/15 10:36:47.594 PM WindowServer[443]: Display 0x003f003e: GL mask 0x4; bounds (2305, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 2, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
1/31/15 10:36:47.594 PM WindowServer[443]: Display 0x003f003d: GL mask 0x2; bounds (2306, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 1, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
1/31/15 10:36:47.605 PM WindowServer[443]: Display 0x042732c0: Unit 0: Startup Mode 1280 x 800, CGSThirtytwoBitColor, Resolution 1, ioModeID 0x80002000, ioModeDepth 0x2, IOReturn 0x0
1/31/15 10:36:47.605 PM WindowServer[443]: CGXDisplaysDidReconfigure: Display added
1/31/15 10:36:47.605 PM WindowServer[443]: CGXDisplaysDidReconfigure: Display removed
1/31/15 10:36:47.608 PM WindowServer[443]: Display 0x042732c0: GL mask 0x1; bounds (0, 0)[1280 x 800], 18 modes available
Main, Active, on-line, enabled, built-in, boot, OpenGL-accel, Vendor 610, Model 9ccb, S/N 0, Unit 0, Rotation 0
UUID 0x4f159f59a71d63aefce94e26fc6d6edd, ColorSpace { 2068752606 }
1/31/15 10:36:47.608 PM WindowServer[443]: GLCompositor: GL renderer id 0x0102261a, GL mask 0x00000003, accelerator 0x0000429b, unit 0, caps QEX|MIPMAP, vram 256 MB
texture max 8192, viewport max {8192, 8192}, extensions NPOT|GLSL|FLOAT
1/31/15 10:36:47.608 PM WindowServer[443]: Display 0x003f003f: GL mask 0x4; bounds (2304, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 2, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
1/31/15 10:36:47.609 PM WindowServer[443]: Display 0x003f003e: GL mask 0x4; bounds (2305, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 2, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
1/31/15 10:36:47.609 PM WindowServer[443]: Display 0x003f003d: GL mask 0x2; bounds (2306, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 1, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
1/31/15 10:36:49.582 PM WindowServer[443]: **DMPROXY** (2) Found `/System/Library/CoreServices/DMProxy'. Run with arg = -discovery
1/31/15 10:36:49.605 PM WindowServer[443]: **DMPROXY** (2) Found `/System/Library/CoreServices/DMProxy'. Run with arg = -discovery
1/31/15 10:36:49.712 PM WindowServer[443]: CGXSetDisplayColorProfileAndTransfer: Display 0x042732c0: Unit 0; ColorProfile { 2068752606 }; TransferTable (256, 12)
1/31/15 10:36:49.767 PM WindowServer[443]: CGXSetDisplayColorProfileAndTransfer: Display 0x042732c0: Unit 0; ColorProfile { 2068752606 }; TransferTable (256, 12)
1/31/15 10:36:49.771 PM com.apple.AmbientDisplayAgent[313]: AMBD Agent: xpc connection became invalid during event handler
1/31/15 10:36:49.822 PM com.apple.AmbientDisplayAgent[313]: AMBD Agent: xpc connection became invalid during event handler
1/31/15 10:36:49.865 PM DMProxy[647]: AMBD Services: connection interrupted: com.apple.AmbientDisplayAgent (Connection interrupted)
1/31/15 10:36:49.875 PM WindowServer[443]: CGXSetDisplayColorProfileAndTransfer: Display 0x042732c0: Unit 0; ColorProfile { 2068752606 }; TransferTable (256, 12)
1/31/15 10:36:49.923 PM com.apple.AmbientDisplayAgent[313]: AmbientDisplayAgent started
1/31/15 10:36:49.929 PM com.apple.AmbientDisplayAgent[313]: AMBD initializing devices
1/31/15 10:36:49.940 PM com.apple.AmbientDisplayAgent[313]: AMBD Agent: xpc connection became invalid during event handler
1/31/15 10:36:49.942 PM DMProxy[648]: AMBD Services: connection interrupted: com.apple.AmbientDisplayAgent (Connection interrupted)
1/31/15 10:36:50.017 PM com.apple.AmbientDisplayAgent[313]: AmbientDisplayAgent started
1/31/15 10:36:54.946 PM DMProxy[648]: AMBD Services serviceSendMessageWithReplyAndTimeout:131: Semaphore timeout when waiting for reply to message ID 2
1/31/15 10:36:54.946 PM DMProxy[648]: AMBD Services serviceSendMessageWithReplyAndTimeout:131: Semaphore timeout when waiting for reply to message ID 1
1/31/15 10:36:54.948 PM com.apple.AmbientDisplayAgent[313]: AMBD initializing devices
1/31/15 10:36:54.960 PM WindowServer[443]: CGXSetDisplayColorProfileAndTransfer: Display 0x042732c0: Unit 0; ColorProfile { 2068752606 }; TransferTable (256, 12)
1/31/15 10:36:54.971 PM com.apple.AmbientDisplayAgent[313]: AMBD Agent: xpc connection became invalid during event handler
1/31/15 10:36:54.972 PM com.apple.AmbientDisplayAgent[313]: AMBD Agent: xpc connection became invalid during event handler