#MACBOOK PRO BOOTCAMP SPEAKERS DRIVERS#
#MACBOOK PRO BOOTCAMP SPEAKERS UPDATE#
#MACBOOK PRO BOOTCAMP SPEAKERS DRIVER#
#MACBOOK PRO BOOTCAMP SPEAKERS WINDOWS#

#MACBOOK PRO BOOTCAMP SPEAKERS DRIVERS#

Some observations that may be useful for writing drivers for the CS4206A on a MacBook Pro: Without the driver's source code, I could not ensure that the modifications did not introduce subtle side effects.

#MACBOOK PRO BOOTCAMP SPEAKERS DRIVER#

This modification of the driver has been tested on the following machines: The optical input should still be enabled, but I haven't tested it. It will remain disabled even if an optical cable were plugged into the headphone port: The jack detection routine does not control the optical output.

1.0.0.13c accepts only 48 kHz instead, which I hope will at least partially work in Vista.Дue to popular demand, the 'No S/PDIF' variant also turns off the digital optical output (red light in the MacBook's headphone port). Version 1.0.0.13b accepts only 96 kHz as a valid sample rate, but this seems to fail in Vista. Oddly enough, sample rates that NewStream declares legal will record incorrectly. In the IMiniportWaveCyclic::NewStream handler, the driver rejects requests for new streams for sample rates it does not like. Version 1.0.0.13b corrects two instances of buffer overruns in the driver, resulting in most sample rates working correctly. When recording, depending on the sample rate used, the driver has been observed to up-sample the received audio, returning 2x or 4x as much data as an application expects, leading to distorted audio. The driver also attempts to correct recording issues (1.0.0.13b, Oct. The modifications to the 1.0.0.13 driver addresses these two issues.

The speaker amplifier gain is scaled by -16 dB in software, while the headphone amplifier gain isn't.

#MACBOOK PRO BOOTCAMP SPEAKERS WINDOWS#

In the Windows XP driver, there are two causes of low audio volume: Windows Vista uses a different driver and has its own independent set of problems. 1, 2009)ДЄs per a thread on Apple Discussions ( Very Poor Volume Output - Windows XP), Apple/Cirrus Logic appears to have shipped incorrectly-configured drivers for the MacBook Pro's audio device in Windows XP. If 1.0.0.13b (96 kHz) doesn't work, try 48 kHz instead. The recording problem isn't completely fixed in neither version b nor c.Fixes recording issues for most sample rates in Windows XP (except 96 kHz).The 'No S/PDIF' variant turns off S/PDIF optical output.Removes the -16dB volume limit on the speakers, and applies it to the headphone output instead.Enables the third (midrange) speaker in the MacBook Pro.This driver is a modification of clhdaud.sys version 1.0.0.13: Manually choose to the driver from a list, and use the 'Have Disk.' button. Don't let Windows search for or do anything automatically.

#MACBOOK PRO BOOTCAMP SPEAKERS UPDATE#

Installation of the modified driver follows standard procedure: In Device Manager, Update Driver for the Cirrus Logic High Definition Audio device. The 'No S/PDIF' version also turns off the S/PDIF optical output. Cirrus Logic High Definition Audio Д«oth versions enable the midrange speaker and corrects the volume.There are two variants of the driver included: New drivers are available from Cirrus Logic. Windows XP driver 1.0.0.32 is not fixed, while 1.0.0.38 appears to fix audio playback but not recording. This driver also works in 32-bit versions of Windows Vista and Windows 7, however there is a newer driver set where the Vista driver seems to be fixed. Unfortunately, their link is dead, so here's a copy: CS4207_WinVista_Win7_32-64-bit_6-.zip Windows Vista and newer: Cirrus has a new driver that should work.Cirrus Logic has a newer XP driver version 1.0.0.38 (Jan., 2011) that is reported to fix audio output problems, but still not record properly.Try this if recording still fails with 1.0.0.13b, but it probably won't help. CirrusAudioXP_Macbook_c.zip 1.0.0.13c (Nov.CirrusAudioXP_Macbook_b.zip 1.0.0.13b (Oct.

Macbook pro bootcamp speakers