Error de pantalla HDMI en Mac Mini (finales de 2012)

Tengo una Mac Mini de finales de 2012 con OS X Mavericks (10.9.5). Cuando conecto dos pantallas al Mini (un Thunderbolt, un HDMI), se configurará y funcionará correctamente durante un tiempo.

Después de 1-2 horas, o si hago algo gráficamente intensivo (iniciar un juego), la pantalla HDMI se cerrará. Se queda en blanco y OS X no reconoce que hay una segunda pantalla conectada. Reiniciar no ayuda, aunque si dejo el sistema apagado por un tiempo, a veces volverá. Nunca tengo un problema con la pantalla conectada al puerto Thunderbolt.

El sistema está en el estado donde ignora el puerto HDMI, e hice la siguiente prueba: usando un cable HDMI de Belkin a un monitor de 1080p con un puerto HDMI, lo conecté al puerto HDMI del Mini y nada. Tomé el mismo cable, lo conecté a un adaptador HDMI-Thunderbolt, lo enchufé en el puerto Thunderbolt y aparece de inmediato. No creo que tenga un problema de cable. Mi mejor conjetura es el calor (si dejo la caja apagada por un tiempo prolongado, comienza a funcionar nuevamente), pero todo lo que he tratado de controlar el calor no ha funcionado.

Supongo que hay algo mal con el chip de gráficos o la lógica de la interfaz HDMI. Me pregunto si hay algún truco para resolver este problema, o si hay alguna otra forma de conectar una segunda pantalla sin recurrir a USB.

Registro de la consola alrededor de la falla más reciente:

10/2/14 10:14:16.956 AM WindowServer[153]: Received display connect changed for display 0xb4135b0
10/2/14 10:14:16.957 AM WindowServer[153]: Found 19 modes for display 0x0b4135b0 [19, 0]
10/2/14 10:14:16.968 AM WindowServer[153]: WSDisplayPipeTransactionEnd returned error e00002be
10/2/14 10:14:17.015 AM WindowServer[153]: Received display connect changed for display 0x3f003d
10/2/14 10:14:17.015 AM WindowServer[153]: Found 1 modes for display 0x003f003d [1, 0]
10/2/14 10:14:17.015 AM WindowServer[153]: Received display connect changed for display 0x1a49c79e
10/2/14 10:14:17.015 AM WindowServer[153]: Found 1 modes for display 0x1a49c79e [1, 0]
10/2/14 10:14:17.015 AM WindowServer[153]: Display 0x1a49c79e changed state to offline
10/2/14 10:14:17.049 AM WindowServer[153]: Display 0x0b4135b0: GL mask 0x1; bounds (0, 0)[2048 x 1152], 19 modes available
Main, Active, on-line, enabled, OpenGL-accel, Vendor 4c2d, Model 41e, S/N 4d593233, Unit 0, Rotation 0
UUID 0xc449a3f839dce34fe41aa2c25e8ebf2c, ColorProfile { 2, "SyncMaster"}
10/2/14 10:14:17.049 AM WindowServer[153]: GLCompositor: GL renderer id 0x01024400, GL mask 0x0000000f, accelerator 0x00005583, unit 0, caps QEX|MIPMAP, vram 1024 MB
texture max 16384, viewport max {16384, 16384}, extensions FPRG|NPOT|GLSL|FLOAT
10/2/14 10:14:17.049 AM WindowServer[153]: Display 0x003f003f: GL mask 0x8; bounds (3072, 0)[1 x 1], 2 modes available
off-line, enabled, OpenGL-accel, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 3, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
10/2/14 10:14:17.049 AM WindowServer[153]: GLCompositor: GL renderer id 0x01024400, GL mask 0x0000000f, accelerator 0x00005583, unit 0, caps QEX|MIPMAP, vram 1024 MB
texture max 16384, viewport max {16384, 16384}, extensions FPRG|NPOT|GLSL|FLOAT
10/2/14 10:14:17.049 AM WindowServer[153]: Display 0x003f003d: GL mask 0x2; bounds (3073, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 1, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
10/2/14 10:14:17.049 AM WindowServer[153]: Display 0x003f0040: GL mask 0x10; bounds (3074, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 4, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
10/2/14 10:14:17.049 AM WindowServer[153]: Display 0x003f0041: GL mask 0x10; bounds (3075, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 4, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
10/2/14 10:14:17.049 AM WindowServer[153]: Display 0x003f0042: GL mask 0x10; bounds (3076, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 4, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
10/2/14 10:14:17.049 AM WindowServer[153]: Display 0x003f0043: GL mask 0x10; bounds (3077, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 4, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
10/2/14 10:14:17.049 AM WindowServer[153]: Display 0x003f003e: GL mask 0x4; bounds (59, -1080)[1 x 1], 1 modes available
off-line, enabled, boot, OpenGL-accel, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 2, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff, ColorProfile { 3, "HD 709-A"}
10/2/14 10:14:17.049 AM WindowServer[153]: GLCompositor: GL renderer id 0x01024400, GL mask 0x0000000f, accelerator 0x00005583, unit 0, caps QEX|MIPMAP, vram 1024 MB
texture max 16384, viewport max {16384, 16384}, extensions FPRG|NPOT|GLSL|FLOAT
10/2/14 10:14:17.052 AM AirDisplayHelper[423]: CGSServiceForDisplayNumber: Invalid display 0x1a49c79e
10/2/14 10:14:17.087 AM WindowServer[153]: Display 0x0b4135b0: Unit 0: Startup Mode 2048 x 1152, CGSThirtytwoBitColor, Resolution 1, ioModeID 0x80002000, ioModeDepth 0x0, IOReturn 0x0
10/2/14 10:14:17.087 AM WindowServer[153]: Display added
10/2/14 10:14:17.087 AM WindowServer[153]: Display removed
10/2/14 10:14:17.090 AM WindowServer[153]: Display 0x0b4135b0: GL mask 0x1; bounds (0, 0)[2048 x 1152], 19 modes available
Main, Active, on-line, enabled, OpenGL-accel, Vendor 4c2d, Model 41e, S/N 4d593233, Unit 0, Rotation 0
UUID 0xc449a3f839dce34fe41aa2c25e8ebf2c, ColorProfile { 2, "SyncMaster"}
10/2/14 10:14:17.090 AM WindowServer[153]: GLCompositor: GL renderer id 0x01024400, GL mask 0x0000000f, accelerator 0x00005583, unit 0, caps QEX|MIPMAP, vram 1024 MB
texture max 16384, viewport max {16384, 16384}, extensions FPRG|NPOT|GLSL|FLOAT
10/2/14 10:14:17.090 AM WindowServer[153]: Display 0x003f003f: GL mask 0x8; bounds (3072, 0)[1 x 1], 2 modes available
off-line, enabled, OpenGL-accel, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 3, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
10/2/14 10:14:17.090 AM WindowServer[153]: GLCompositor: GL renderer id 0x01024400, GL mask 0x0000000f, accelerator 0x00005583, unit 0, caps QEX|MIPMAP, vram 1024 MB
texture max 16384, viewport max {16384, 16384}, extensions FPRG|NPOT|GLSL|FLOAT
10/2/14 10:14:17.091 AM WindowServer[153]: Display 0x003f003d: GL mask 0x2; bounds (3073, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 1, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
10/2/14 10:14:17.091 AM WindowServer[153]: Display 0x003f0040: GL mask 0x10; bounds (3074, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 4, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
10/2/14 10:14:17.091 AM WindowServer[153]: Display 0x003f0041: GL mask 0x10; bounds (3075, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 4, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
10/2/14 10:14:17.091 AM WindowServer[153]: Display 0x003f0042: GL mask 0x10; bounds (3076, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 4, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
10/2/14 10:14:17.091 AM WindowServer[153]: Display 0x003f0043: GL mask 0x10; bounds (3077, 0)[1 x 1], 1 modes available
off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 4, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff
10/2/14 10:14:17.091 AM WindowServer[153]: Display 0x003f003e: GL mask 0x4; bounds (3078, -1080)[1 x 1], 1 modes available
off-line, enabled, boot, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 2, Rotation 0
UUID 0xffffffffffffffffffffffffffffffff, ColorProfile { 3, "HD 709-A"}
10/2/14 10:14:17.094 AM AirDisplayHelper[423]: CGSServiceForDisplayNumber: Invalid display 0x1a49c79e
10/2/14 10:14:17.094 AM AirDisplayHelper[423]: CGSServiceForDisplayNumber: Invalid display 0x1a49c79e
10/2/14 10:14:17.097 AM Console[496]: Set a breakpoint at CGSLogError to catch errors as they are logged.
10/2/14 10:14:17.097 AM Finder[371]: CGSCopyDisplayUUID: Invalid display 0x1a49c79e
10/2/14 10:14:17.097 AM Console[496]: CGSCopyDisplayUUID: Invalid display 0x1a49c79e
10/2/14 10:14:17.097 AM handyPrint[419]: CGSCopyDisplayUUID: Invalid display 0x1a49c79e
10/2/14 10:14:17.099 AM Google Chrome[416]: Set a breakpoint at CGSLogError to catch errors as they are logged.
10/2/14 10:14:17.099 AM Google Chrome[416]: CGSCopyDisplayUUID: Invalid display 0x1a49c79e
10/2/14 10:14:17.134 AM WindowServer[153]: MPAccessSurfaceForDisplayDevice: Set up page flip mode on display 0x0b4135b0 device: 0x7fd60b704cd0  isBackBuffered: 1 numComp: 3 numDisp: 3
10/2/14 10:14:17.139 AM Finder[371]: CGSCopyDisplayUUID: Invalid display 0x1a49c79e
10/2/14 10:14:17.139 AM Google Chrome[416]: CGSCopyDisplayUUID: Invalid display 0x1a49c79e
10/2/14 10:14:17.139 AM Console[496]: CGSCopyDisplayUUID: Invalid display 0x1a49c79e
10/2/14 10:14:17.141 AM handyPrint[419]: CGSCopyDisplayUUID: Invalid display 0x1a49c79e
10/2/14 10:14:17.148 AM <Game>[532]: Set a breakpoint at CGSLogError to catch errors as they are logged.
10/2/14 10:14:17.148 AM <Game>[532]: CGSCopyDisplayUUID: Invalid display 0x1a49c79e
10/2/14 10:14:17.173 AM <Game>[532]: CGSCopyDisplayUUID: Invalid display 0x1a49c79e
10/2/14 10:14:19.015 AM WindowServer[153]: **DMPROXY** (2) Found `/System/Library/CoreServices/DMProxy'.
10/2/14 10:14:19.046 AM WindowServer[153]: Display 0x0b4135b0: Unit 0; ColorProfile { 2, "SyncMaster"}; TransferFormula (1.000000, 1.000000, 1.000000)
10/2/14 10:14:19.077 AM WindowServer[153]: Display 0x0b4135b0: Unit 0; ColorProfile { 2, "SyncMaster"}; TransferFormula (1.000000, 1.000000, 1.000000)
10/2/14 10:14:19.087 AM WindowServer[153]: **DMPROXY** (2) Found `/System/Library/CoreServices/DMProxy'.
10/2/14 10:14:19.113 AM WindowServer[153]: Display 0x0b4135b0: Unit 0; ColorProfile { 2, "SyncMaster"}; TransferFormula (1.000000, 1.000000, 1.000000)
10/2/14 10:14:19.128 AM WindowServer[153]: Display 0x0b4135b0: Unit 0; ColorProfile { 2, "SyncMaster"}; TransferFormula (1.000000, 1.000000, 1.000000)
10/2/14 10:14:48.409 AM Console[496]: CGSCopyDisplayUUID: Invalid display 0x1a49c79e

Vaya a Preferencias del sistema, presione el botón de desbloqueo en la esquina inferior izquierda y luego Autentíquese. Haz clic en Mostrar todo en la parte superior. Encuentra "Displays", no Desktop and Screensaver. Cambie el color RS86A y luego intente configurarlo en la resolución más alta. Debe mostrar todo lo que ve a una resolución de 1200x800 como mínimo.