1 votos

pankmohan avatar

Cómo restablecer los sonidos en Yosemite 10.10.3

Preguntado el 17 de Mayo, 2015
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En una versión anterior de OSX, la combinación alt-cmd-P-R volver a activar los sonidos después de un reinicio, pero no en Yosemite.

En algunas versiones de OSX, el comando sudo killall coreaudio funciona pero no en Yosemite 10.10.3 en un Macbook Air de mediados de 2013. Este problema también se produjo en Yosemite 10.10.1 al actualizar a la nueva versión. He conseguido recuperar los sonidos mediante los procedimientos anteriores.

No veo ninguna fuente de audio en la configuración de sonido después de la aparición de este problema, incluso después de esos dos intentos de resolver este problema.

enter image description here

¿Cómo se pueden restablecer los sonidos en OSX Yosemite 10.10.3?

Puedo obtener asistencia gratuita de AppleCare si es la única solución, ya que tengo un seguro de 5 años. Sin embargo, no quiero hacerlo si no hay otra solución.

Eventos 23.5.2015

Apple trajo nuevas actualizaciones en la App Store que solucionaron el problema temporalmente (3 horas):

enter image description here

Usé mi Macbook Air 3 horas, fui a la pausa y abrí el Macbook de nuevo - el mismo problema volvió. Realmente no entiendo la razón del error de OSX.

El comando cd /System/Library/Extensions/AudioAUUC.kext ; ls -alt da

total 136
drwxr-xr-x  245 root  wheel   8330 May  3 12:06 ..
drwxr-xr-x    6 root  wheel    204 Apr 23 19:19 .
drwxr-xr-x    3 root  wheel    102 Apr 23 19:19 _CodeSignature
-rwxr-xr-x    1 root  wheel  57392 Mar 23 20:44 AudioAUUC
-rw-r--r--    1 root  wheel    473 Mar 23 20:44 version.plist
-rw-r--r--    1 root  wheel   2251 Mar 23 20:44 Info.plist

que son bastante nuevos.

El comando kextstat -b com.apple.driver.AudioAUUC da

Index Refs Address Size Wired Name (Version) <Linked Against>

lo que significa que lo del audio no se carga como se comentó con @danielAzuelos.

La orden de Daniel /usr/bin/sudo kextutil -t -v 6 -b com.apple.driver.AudioAUUC da

Kext user-space log filter changed from 0xff2 to 0xfff.
Kext kernel-space log filter changed from 0xff2 to 0xfff.
Kext library architecture set to x86_64.
Can't stat /AppleInternal - No such file or directory.
Defaulting to kernel file '/System/Library/Kernels/kernel'
Kext library recording diagnostics for: validation authentication dependencies warnings.
/System/Library/Extensions/AudioAUUC.kext appears to be loadable (not including linkage for on-disk libraries).
Reading loaded kext info from kernel.
(kernel) User-space log flags changed from 0x0 to 0xfff.
(kernel) Received 'Get Loaded Kext Info' request from user space.
(kernel) Returning loaded kext info.
Loaded kext info:
{
}

Loading /System/Library/Extensions/AudioAUUC.kext.
Reading load info for 13 kexts.
Reading loaded kext info from kernel.
(kernel) User-space log flags changed from 0x0 to 0xfff.
(kernel) Received 'Get Loaded Kext Info' request from user space.
(kernel) Returning loaded kext info.
Loaded kext info:
{
"com.apple.kpi.bsd" = {
    "OSBundleWiredSize" = 35920
    "CFBundleIdentifier" = "com.apple.kpi.bsd"
    "OSBundleUUID" = <a0e026bd b5be44f7 8403a871 8d3dbaca>
    "OSBundleLoadAddress" = -551892557824
    "OSBundleLoadTag" = 1
    "OSBundleStarted" = true
    "OSBundleCompatibleVersion" = "8.0.0b1"
    "OSKernelResource" = true
    "CFBundleVersion" = "14.3.0"
    "OSBundlePath" = 
        "/System/Library/Extensions/System.kext/PlugIns/BSDKernel.kext"
    "OSBundleRetainCount" = 76
    "OSBundlePrelinked" = true
    "OSBundleIsInterface" = true
    "OSBundleLoadSize" = 35920
}
"com.apple.iokit.IOPCIFamily" = {
    "OSBundleWiredSize" = 192512
    "CFBundleIdentifier" = "com.apple.iokit.IOPCIFamily"
    "OSBundleStarted" = true
    "OSBundleCPUType" = 16777223
    "OSBundleCompatibleVersion" = "1.0.0b1"
    "OSBundleUUID" = <52e715fc 521d3869 b2ea5228 fa4bea34>
    "OSKernelResource" = false
    "CFBundleVersion" = "2.9"
    "OSBundleLoadTag" = 12
    "OSBundleLoadAddress" = -551891615744
    "OSBundleDependencies" = (
        4
        5
        3
        7
        6
    )
    "OSBundlePath" = "/System/Library/Extensions/IOPCIFamily.kext"
    "OSBundleRetainCount" = 27
    "OSBundleCPUSubtype" = 3
    "OSBundlePrelinked" = true
    "OSBundleIsInterface" = false
    "OSBundleLoadSize" = 192512
}
"com.apple.kpi.unsupported" = {
    "OSBundleWiredSize" = 18688
    "CFBundleIdentifier" = "com.apple.kpi.unsupported"
    "OSBundleUUID" = <6b59e72c 5a8a4f6f 9f1fac1a c266fc01>
    "OSBundleLoadAddress" = -551892578304
    "OSBundleLoadTag" = 7
    "OSBundleStarted" = true
    "OSBundleCompatibleVersion" = "8.0.0b1"
    "OSKernelResource" = true
    "CFBundleVersion" = "14.3.0"
    "OSBundlePath" = 
        "/System/Library/Extensions/System.kext/PlugIns/Unsupported.kext"
    "OSBundleRetainCount" = 59
    "OSBundlePrelinked" = true
    "OSBundleIsInterface" = true
    "OSBundleLoadSize" = 18688
}
"com.apple.kec.Libm" = {
    "OSBundleWiredSize" = 36864
    "CFBundleIdentifier" = "com.apple.kec.Libm"
    "OSBundleStarted" = true
    "OSBundleCPUType" = 16777223
    "OSBundleCompatibleVersion" = "1.0.0d0"
    "OSBundleUUID" = <a085de81 421e3818 b5aa3176 f8a9ee41>
    "OSKernelResource" = false
    "CFBundleVersion" = "1"
    "OSBundleLoadTag" = 10
    "OSBundleLoadAddress" = -551887593472
    "OSBundleDependencies" = (
        4
    )
    "OSBundlePath" = "/System/Library/Extensions/Libm.kext"
    "OSBundleRetainCount" = 1
    "OSBundleCPUSubtype" = 3
    "OSBundlePrelinked" = true
    "OSBundleIsInterface" = false
    "OSBundleLoadSize" = 36864
}
"com.apple.iokit.IOAudioFamily" = {
    "OSBundleWiredSize" = 196608
    "CFBundleIdentifier" = "com.apple.iokit.IOAudioFamily"
    "OSBundleStarted" = true
    "OSBundleCPUType" = 16777223
    "OSBundleCompatibleVersion" = "1.0"
    "OSBundleUUID" = <76e5591a b4953994 82c9d4af e7248acd>
    "OSKernelResource" = false
    "CFBundleVersion" = "203.3"
    "OSBundleLoadTag" = 104
    "OSBundleLoadAddress" = -551870152704
    "OSBundleDependencies" = (
        1
        4
        3
        103
        5
    )
    "OSBundlePath" = "/System/Library/Extensions/IOAudioFamily.kext"
    "OSBundleRetainCount" = 1
    "OSBundleCPUSubtype" = 3
    "OSBundlePrelinked" = true
    "OSBundleIsInterface" = false
    "OSBundleLoadSize" = 196608
}
"com.apple.iokit.IOACPIFamily" = {
    "OSBundleWiredSize" = 36864
    "CFBundleIdentifier" = "com.apple.iokit.IOACPIFamily"
    "OSBundleStarted" = true
    "OSBundleCPUType" = 16777223
    "OSBundleCompatibleVersion" = "1.0.0d1"
    "OSBundleUUID" = <70e2b65e a91a3522 a1a079fd 63eabb4c>
    "OSKernelResource" = false
    "CFBundleVersion" = "1.4"
    "OSBundleLoadTag" = 11
    "OSBundleLoadAddress" = -551882403840
    "OSBundleDependencies" = (
        6
        4
        3
        7
    )
    "OSBundlePath" = "/System/Library/Extensions/IOACPIFamily.kext"
    "OSBundleRetainCount" = 21
    "OSBundleCPUSubtype" = 3
    "OSBundlePrelinked" = true
    "OSBundleIsInterface" = false
    "OSBundleLoadSize" = 36864
}
"com.apple.kpi.iokit" = {
    "OSBundleWiredSize" = 132352
    "CFBundleIdentifier" = "com.apple.kpi.iokit"
    "OSBundleUUID" = <2ce5bfc8 851e42a0 89c2c72c 5fc0ed37>
    "OSBundleLoadAddress" = -551892799488
    "OSBundleLoadTag" = 3
    "OSBundleStarted" = true
    "OSBundleCompatibleVersion" = "7.0"
    "OSKernelResource" = true
    "CFBundleVersion" = "14.3.0"
    "OSBundlePath" = 
        "/System/Library/Extensions/System.kext/PlugIns/IOKit.kext"
    "OSBundleRetainCount" = 99
    "OSBundlePrelinked" = true
    "OSBundleIsInterface" = true
    "OSBundleLoadSize" = 132352
}
"com.apple.kpi.mach" = {
    "OSBundleWiredSize" = 11600
    "CFBundleIdentifier" = "com.apple.kpi.mach"
    "OSBundleUUID" = <25a0bcf1 1ba54d24 8bc20d3e ce0e2290>
    "OSBundleLoadAddress" = -551892811776
    "OSBundleLoadTag" = 5
    "OSBundleStarted" = true
    "OSBundleCompatibleVersion" = "8.0.0d0"
    "OSKernelResource" = true
    "CFBundleVersion" = "14.3.0"
    "OSBundlePath" = "/System/Library/Extensions/System.kext/PlugIns/Mach.kext"
    "OSBundleRetainCount" = 90
    "OSBundlePrelinked" = true
    "OSBundleIsInterface" = true
    "OSBundleLoadSize" = 11600
}
"com.apple.vecLib.kext" = {
    "OSBundleWiredSize" = 491520
    "CFBundleIdentifier" = "com.apple.vecLib.kext"
    "OSBundleStarted" = true
    "OSBundleCPUType" = 16777223
    "OSBundleCompatibleVersion" = "1.0.0d0"
    "OSBundleUUID" = <f806e076 fbc83e43 925ec85b dba433db>
    "OSKernelResource" = false
    "CFBundleVersion" = "1.2.0"
    "OSBundleLoadTag" = 103
    "OSBundleLoadAddress" = -551870644224
    "OSBundleDependencies" = (
        10
        4
        3
        6
        5
    )
    "OSBundlePath" = "/System/Library/Extensions/vecLib.kext"
    "OSBundleRetainCount" = 1
    "OSBundleCPUSubtype" = 3
    "OSBundlePrelinked" = true
    "OSBundleIsInterface" = false
    "OSBundleLoadSize" = 491520
}
"com.apple.kpi.private" = {
    "OSBundleWiredSize" = 34192
    "CFBundleIdentifier" = "com.apple.kpi.private"
    "OSBundleUUID" = <defc5a97 5f574cad b525506a eb855330>
    "OSBundleLoadAddress" = -551892615168
    "OSBundleLoadTag" = 6
    "OSBundleStarted" = true
    "OSBundleCompatibleVersion" = "8.0.0b1"
    "OSKernelResource" = true
    "CFBundleVersion" = "14.3.0"
    "OSBundlePath" = 
        "/System/Library/Extensions/System.kext/PlugIns/Private.kext"
    "OSBundleRetainCount" = 43
    "OSBundlePrelinked" = true
    "OSBundleIsInterface" = true
    "OSBundleLoadSize" = 34192
}
"com.apple.iokit.IOGraphicsFamily" = {
    "OSBundleWiredSize" = 241664
    "CFBundleIdentifier" = "com.apple.iokit.IOGraphicsFamily"
    "OSBundleStarted" = true
    "OSBundleCPUType" = 16777223
    "OSBundleCompatibleVersion" = "1.0.0b1"
    "OSBundleUUID" = <82ead591 67e339cb a232a809 5ca30e92>
    "OSKernelResource" = false
    "CFBundleVersion" = "2.4.1"
    "OSBundleLoadTag" = 77
    "OSBundleLoadAddress" = -551881777152
    "OSBundleDependencies" = (
        12
        4
        3
        7
        5
        1
    )
    "OSBundlePath" = "/System/Library/Extensions/IOGraphicsFamily.kext"
    "OSBundleRetainCount" = 11
    "OSBundleCPUSubtype" = 3
    "OSBundlePrelinked" = true
    "OSBundleIsInterface" = false
    "OSBundleLoadSize" = 241664
}
"com.apple.kpi.libkern" = {
    "OSBundleWiredSize" = 48976
    "CFBundleIdentifier" = "com.apple.kpi.libkern"
    "OSBundleUUID" = <7b658b96 3b784a9c 9a975c63 a8f653fe>
    "OSBundleLoadAddress" = -551892664320
    "OSBundleLoadTag" = 4
    "OSBundleStarted" = true
    "OSBundleCompatibleVersion" = "8.0.0d0"
    "OSKernelResource" = true
    "CFBundleVersion" = "14.3.0"
    "OSBundlePath" = 
        "/System/Library/Extensions/System.kext/PlugIns/Libkern.kext"
    "OSBundleRetainCount" = 104
    "OSBundlePrelinked" = true
    "OSBundleIsInterface" = true
    "OSBundleLoadSize" = 48976
}
}

/System/Library/Extensions/System.kext/PlugIns/BSDKernel.kext (version 14.3, UUID A0E026BD-B5BE-44F7-8403-A8718D3DBACA) is loaded.
/System/Library/Extensions/System.kext/PlugIns/BSDKernel.kext (version 14.3): is started.
setting load address of /System/Library/Extensions/System.kext/PlugIns/BSDKernel.kext to 0xffffff7f80a3e000
/System/Library/Extensions/IOACPIFamily.kext (version 1.4, UUID 70E2B65E-A91A-3522-A1A0-79FD63EABB4C) is loaded.
/System/Library/Extensions/IOACPIFamily.kext (version 1.4): is started.
setting load address of /System/Library/Extensions/IOACPIFamily.kext to 0xffffff7f813ed000
/System/Library/Extensions/System.kext/PlugIns/Libkern.kext (version 14.3, UUID 7B658B96-3B78-4A9C-9A97-5C63A8F653FE) is loaded.
/System/Library/Extensions/System.kext/PlugIns/Libkern.kext (version 14.3): is started.
setting load address of /System/Library/Extensions/System.kext/PlugIns/Libkern.kext to 0xffffff7f80a24000
/System/Library/Extensions/IOPCIFamily.kext (version 2.9, UUID 52E715FC-521D-3869-B2EA-5228FA4BEA34) is loaded.
/System/Library/Extensions/IOPCIFamily.kext (version 2.9): is started.
setting load address of /System/Library/Extensions/IOPCIFamily.kext to 0xffffff7f80b24000
/System/Library/Extensions/System.kext/PlugIns/IOKit.kext (version 14.3, UUID 2CE5BFC8-851E-42A0-89C2-C72C5FC0ED37) is loaded.
/System/Library/Extensions/System.kext/PlugIns/IOKit.kext (version 14.3): is started.
setting load address of /System/Library/Extensions/System.kext/PlugIns/IOKit.kext to 0xffffff7f80a03000
/System/Library/Extensions/System.kext/PlugIns/Mach.kext (version 14.3, UUID 25A0BCF1-1BA5-4D24-8BC2-0D3ECE0E2290) is loaded.
/System/Library/Extensions/System.kext/PlugIns/Mach.kext (version 14.3): is started.
setting load address of /System/Library/Extensions/System.kext/PlugIns/Mach.kext to 0xffffff7f80a00000
/System/Library/Extensions/IOAudioFamily.kext (version 203.3, UUID 76E5591A-B495-3994-82C9-D4AFE7248ACD) is loaded.
/System/Library/Extensions/IOAudioFamily.kext (version 203.3): is started.
setting load address of /System/Library/Extensions/IOAudioFamily.kext to 0xffffff7f81f9c000
/System/Library/Extensions/IOGraphicsFamily.kext (version 2.4.1, UUID 82EAD591-67E3-39CB-A232-A8095CA30E92) is loaded.
/System/Library/Extensions/IOGraphicsFamily.kext (version 2.4.1): is started.
setting load address of /System/Library/Extensions/IOGraphicsFamily.kext to 0xffffff7f81486000
/System/Library/Extensions/System.kext/PlugIns/Unsupported.kext (version 14.3, UUID 6B59E72C-5A8A-4F6F-9F1F-AC1AC266FC01) is loaded.
/System/Library/Extensions/System.kext/PlugIns/Unsupported.kext (version 14.3): is started.
setting load address of /System/Library/Extensions/System.kext/PlugIns/Unsupported.kext to 0xffffff7f80a39000
/System/Library/Extensions/System.kext/PlugIns/Private.kext (version 14.3, UUID DEFC5A97-5F57-4CAD-B525-506AEB855330) is loaded.
/System/Library/Extensions/System.kext/PlugIns/Private.kext (version 14.3): is started.
setting load address of /System/Library/Extensions/System.kext/PlugIns/Private.kext to 0xffffff7f80a30000
/System/Library/Extensions/vecLib.kext (version 1.2, UUID F806E076-FBC8-3E43-925E-C85BDBA433DB) is loaded.
/System/Library/Extensions/vecLib.kext (version 1.2): is started.
setting load address of /System/Library/Extensions/vecLib.kext to 0xffffff7f81f24000
/System/Library/Extensions/Libm.kext (version 1.0, UUID A085DE81-421E-3818-B5AA-3176F8A9EE41) is loaded.
/System/Library/Extensions/Libm.kext (version 1.0): is started.
setting load address of /System/Library/Extensions/Libm.kext to 0xffffff7f80efa000
Omitting loaded kext /System/Library/Extensions/System.kext/PlugIns/BSDKernel.kext from mkext for kernel load.
Omitting loaded kext /System/Library/Extensions/System.kext/PlugIns/Unsupported.kext from mkext for kernel load.
Omitting loaded kext /System/Library/Extensions/System.kext/PlugIns/IOKit.kext from mkext for kernel load.
Omitting loaded kext /System/Library/Extensions/System.kext/PlugIns/Libkern.kext from mkext for kernel load.
Omitting loaded kext /System/Library/Extensions/System.kext/PlugIns/Private.kext from mkext for kernel load.
Omitting loaded kext /System/Library/Extensions/IOACPIFamily.kext from mkext for kernel load.
Omitting loaded kext /System/Library/Extensions/System.kext/PlugIns/Mach.kext from mkext for kernel load.
Omitting loaded kext /System/Library/Extensions/IOPCIFamily.kext from mkext for kernel load.
Omitting loaded kext /System/Library/Extensions/Libm.kext from mkext for kernel load.
Omitting loaded kext /System/Library/Extensions/vecLib.kext from mkext for kernel load.
Omitting loaded kext /System/Library/Extensions/IOAudioFamily.kext from mkext for kernel load.
Omitting loaded kext /System/Library/Extensions/IOGraphicsFamily.kext from mkext for kernel load.
Adding /System/Library/Extensions/AudioAUUC.kext to mkext.
/System/Library/Extensions/AudioAUUC.kext added 57392-byte noncompressed executable to mkext.
Created mkext for architecture x86_64 containing 1 kexts.
Loading /System/Library/Extensions/AudioAUUC.kext.
(kernel) User-space log flags changed from 0x0 to 0xfff.
(kernel) Received kext load request from user space.
(kernel) Received request from user space to load kext com.apple.driver.AudioAUUC.
(kernel) Recorded kext com.apple.driver.AudioAUUC as a candidate for inclusion in prelinked kernel.
(kernel) Loading kext com.apple.driver.AudioAUUC.
(kernel) Kext com.apple.kpi.bsd is already loaded.
(kernel) Kext com.apple.iokit.IOACPIFamily is already loaded.
(kernel) Kext com.apple.iokit.IOACPIFamily sending 0 personality to the IOCatalogue and starting matching.
(kernel) Kext com.apple.kpi.libkern is already loaded.
(kernel) Kext com.apple.iokit.IOPCIFamily is already loaded.
(kernel) Kext com.apple.iokit.IOPCIFamily sending 3 personalities to the IOCatalogue and starting matching.
(kernel) Kext com.apple.kpi.iokit is already loaded.
(kernel) Kext com.apple.kpi.mach is already loaded.
(kernel) Kext com.apple.iokit.IOAudioFamily is already loaded.
(kernel) Kext com.apple.iokit.IOGraphicsFamily is already loaded.
(kernel) Kext com.apple.kpi.unsupported is already loaded.
(kernel) Allocated link buffer for kext com.apple.driver.AudioAUUC at 0xffffff7f9a203000 (28672 bytes).
(kernel) Kext com.apple.driver.AudioAUUC executable loaded; 7 pages at 0xffffff7f82a03000 (load tag 142).
(kernel) Kext com.apple.driver.AudioAUUC calling module start function.
(kernel) Kext com.apple.driver.AudioAUUC registered class AudioAUUCDriver.
(kernel) Kext com.apple.driver.AudioAUUC has IOService subclass AudioAUUCDriver; enabling autounload.
(kernel) Kext com.apple.driver.AudioAUUC registered class AudioAUUC.
(kernel) Kext com.apple.driver.AudioAUUC is now started.
(kernel) Kext com.apple.driver.AudioAUUC sending 1 personality to the IOCatalogue and starting matching.
(kernel) Kext com.apple.driver.AudioAUUC loaded.
Successfully loaded /System/Library/Extensions/AudioAUUC.kext.
/System/Library/Extensions/AudioAUUC.kext successfully loaded (or already loaded).

y veo que el módulo no está cargado como la salida Index Refs Address Size Wired Name (Version) <Linked Against> del comando kextstat -b com.apple.driver.AudioAUUC .

¿Cómo se puede cargar esta cosa de audio ahora?

Preguntado el 17 de Mayo, 2015 por pankmohan

Respuestas

¿Demasiados anuncios?

1voto

Rich avatar
Rich Puntos 2429

Dado que estamos hablando aquí de un componente muy arriesgado del kernel que proviene del disco, la primera hipótesis a matar es un sistema de archivos corrupto.

  1. Compruebe su partición de arranque con la Utilidad de Discos.

    Si aparecen errores, repárelos y reinicie.

  2. Compruebe si hay un problema de extensión:

    Reinicie su Mac sin extensiones: OS X Yosemite: Arrancar en modo seguro

    Si no escucha el sonido de arranque, sólo tiene que pulsar la tecla ⇧ shift 3 segundos después del botón de encendido. Manténgalo pulsado hasta que vea la barra de progresión de color gris oscuro que muestra las extensiones, la caché y la reorganización del kernel en curso.

    Comprueba si el sonido es correcto.

    Si la respuesta es afirmativa, inicie la búsqueda de la extensión mala.

    Si no es así, tienes un problema de hardware. Lleva tu Mac a Apple.

  3. Compruebe si la extensión, la caché o el kernel están dañados:

    Verifique si las extensiones del kernel de audio están realmente cargadas:

    kextstat | egrep 'Index|Audio'

    Usted debe obtener una salida muy similar (pero el campo de la dirección hexadecimal) a esto:

    $ kextstat | egrep 'Index|Audio'
Index Refs Address            Size       Wired      Name (Version) <Linked Against>
       95    4 0xffffff7f81603000 0x30000    0x30000    com.apple.iokit.IOAudioFamily (203.3) <94 5 4 3 1>
      196    0 0xffffff7f82c24000 0x5000     0x5000     com.apple.driver.AudioAUUC (1.70) <95 76 12 11 7 5 4 3 1>
$

    Si no se tienen cargadas estas 2 extensiones, se aprovechará este defecto para cargarlas en un modo en el que se verá lo que va mal (es decir, lo que suele estar oculto tras el bonito globo de playa giratorio®. ).

    Para recargar manualmente una extensión perdida y aprovechar esta operación manual para comprender mejor el origen del mal, he aquí cómo proceder:

    /usr/bin/sudo kextutil -t -v 6 -b com.apple.driver.AudioAUUC

    que carga la extensión del kernel com.apple.driver.AudioAUUC

    -b identificarlo con su nombre de paquete,

    -t imprimir diagnósticos,

    -v 6 será lo más verborreico posible sobre cada uno de los pasos de este proceso.

    Al final de esta carga verbosa de la extensión del kernel, compruebe que el kernel ha cargado esta extensión:

    kextstat -b com.apple.driver.AudioAUUC
Respondido el 23 de Mayo, 2015 por Rich (2429 Puntos )

0voto

Usuario no registrado avatar
Usuario no registrado Puntos 0

Podría estar relacionado con el hardware: conecta un auricular al ordenador y asegúrate de que realmente se conecta. Desconéctalo y reinicia. Tuve un MacMini con audio defectuoso y esto me ayudó a levantarlo por un tiempo. Si no aparece el sonido de arranque, intenta lo mismo de nuevo pero dejando el auricular enchufado. Experimenta con esto.

Nota: Cuando no aparece el timbre de inicio, probablemente significa que el hardware de audio no pudo inicializarse y todo lo relacionado con el software no puede cambiar nada ya que el controlador de audio no tiene conexión con el hardware.

Respondido el 24 de Mayo, 2015 por Usuario no registrado (0 Puntos )

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