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Rebuilt my HTPC, need some pointers
Post 302411188 by tlarkin on Wednesday 7th of April 2010 11:55:04 PM
04-08-2010
Well for the sake of anyone finding this thread via search or Google I figure I'd let you all know the outcome, which I am sure you are all dying to know....
In the end I returned the Nvidia 210 card and picked up an ATI Radeon 4350 and it works in Ubuntu with the ATI proprietary drivers out of the box, including Audio over HDMI. So now my Ubuntu HTPC and MythTV box is boasting 7.1 audio out to my receiver, and life is now good....
Well I spoke too soon. The audio out works, yes, and my receiver does get surround sound. However, I cannot control the audio levels via software mixer in Linux. So I need to figure out how to tweak that.
In the end I returned the Nvidia 210 card and picked up an ATI Radeon 4350 and it works in Ubuntu with the ATI proprietary drivers out of the box, including Audio over HDMI. So now my Ubuntu HTPC and MythTV box is boasting 7.1 audio out to my receiver, and life is now good....
Well I spoke too soon. The audio out works, yes, and my receiver does get surround sound. However, I cannot control the audio levels via software mixer in Linux. So I need to figure out how to tweak that.
Last edited by tlarkin; 04-08-2010 at 12:00 PM..
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LEARN ABOUT SUNOS
mixerctl
mixerctl(1) User Commands mixerctl(1) NAME
mixerctl - audio mixer control command line application SYNOPSIS
/usr/sbin/mixerctl [-a | -d dev] [-iv] [-e | -o] DESCRIPTION
Some audio devices support the audio mixer functionality. See mixer(7I) for a complete description of the audio mixer. The mixerctl command is used to control the mode of the audio mixer and to get information about the audio mixer and the audio device. See audio(7I) for details. OPTIONS
The following options are supported. If none are specified, option -i is assumed: -a The command applies to all audio devices. -d dev The dev argument specifies an alternate audio control device for the command to use. -e Enables the audio mixer function if the audio device supports it. If supported, the audio mixer may be enabled at any time. The command silently ignores the enable option if the audio mixer is already enabled. -i Prints the audio device type information for the device and indicates whether the audio device uses the audio mixer. If the device does use the audio mixer, this option displays the audio mixer's mode. -o Turns off the audio mixer function if the audio device supports it. If supported, the audio mixer may be turned off if only one process has the device opened with the O_RDWR flag, or, if two different processes have the device opened, one with the O_RDONLY flag and the other with the O_WRONLY flag. (See open(2).) The command silently ignores the disable option if the audio mixer function is already disabled. -v Verbose mode. Prints the audio_info_t structure for the device, along with the device type information. This option implies the -i option. ENVIRONMENT VARIABLES
AUDIODEV If the -d and -a options are not specified, the AUDIODEV environment variable is consulted. If set, AUDIODEV will contain the full path name of the user's default audio device. The default audio device will be converted into a control device, and then used. If the AUDIODEV variable is not set, /dev/audioctl is used. FILES
/dev/audioctl /dev/sound/{0...n}ctl ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Architecture |SPARC, x86 | +-----------------------------+-----------------------------+ |Availability |SUNWauda | +-----------------------------+-----------------------------+ |Stability Level |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
audioconvert(1), audioplay(1), audiorecord(1), open(2), attributes(5), usb_ac(7D), audio(7I), audio_support(7I), mixer(7I) SunOS 5.10 12 Mar 2001 mixerctl(1)