[mythtv-users] Assistance with digital audio configuration requested

Joseph Fry joe at thefrys.com
Wed Aug 21 18:34:31 UTC 2013


Your not getting sound when playing a recording in mythtv?

You need to adjust your mythtv audio output to the HDMI, and probably
check the box to pass through Dolby Digital and DTS (if your tv
decodes that).

On Wed, Aug 21, 2013 at 1:17 PM, Daryl McDonald <darylangela at gmail.com> wrote:
>
>
>
> On Wed, Aug 21, 2013 at 12:21 PM, Daryl McDonald <darylangela at gmail.com>
> wrote:
>>
>>
>>
>>
>> On Wed, Aug 21, 2013 at 10:35 AM, Joseph Fry <joe at thefrys.com> wrote:
>>>
>>> >> Perhaps someone can say for certain if the ATI binary drivers are
>>> >> required for audio over HDMI... I would suspect that they might if you
>>> >> see no trace of the audio device on your system.
>>> >>
>>> >> One thing you might do is open a terminal and run "dmesg".  this will
>>> >> give you the log generated by the kernel as it detects and configures
>>> >> drivers for your system.  Scan through it to see if you see any sign
>>> >> that it loaded drivers for ATI audio, HDMI audio, or something like
>>> >> that.
>>> >>
>>> >> You might also do an "lspci" and take a look at the output of that to
>>> >> see if the device was even detected.
>>> >>
>>> >> There are a ton of tools at your disposal to check things out, however
>>> >> without any experience with your device I can't be sure what the best
>>> >> approach would be.  Perhaps someone else can help?
>>> >>
>>> >> Personally, I always use the binary drivers from ATI or NVIDIA.  While
>>> >> the ATI/AMD drivers are not perfect by any means, they are superior to
>>> >> the open source drivers included in Ubuntu, simply because they have
>>> >> access to information about the hardware that is not provided to open
>>> >> source developers.
>>> >>
>>> >> You do run the risk of X not starting, however typically this is
>>> >> easily fixed, and I don't see it happen very frequently, way too many
>>> >> users of those drivers for major issues like that to be ignored.  Just
>>> >> make sure your system is fully updated before adding the video
>>> >> drivers... just in case your previous bad experience required a patch.
>>>
>>> >
>>> > 00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia
>>> > (Intel HDA)
>>> > 01:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI Cedar HDMI
>>> > Audio
>>> > [Radeon HD 5400/6300 Series]
>>> >
>>> > Above are the only two lines detailing "Audio" from "lspci".
>>> >
>>> > 14.977248] input: HD-Audio Generic HDMI/DP,pcm=3 as
>>> > /devices/pci0000:00/0000:00:02.0/0000:01:00.1/sound/card1/input10
>>> >
>>> > 14.594360] [drm] Radeon Display Connectors
>>> > [   14.594361] [drm] Connector 0:
>>> > [   14.594363] [drm]   HDMI-A-1
>>> > [   14.594363] [drm]   HPD2
>>> > [   14.594365] [drm]   DDC: 0x6440 0x6440 0x6444 0x6444 0x6448 0x6448
>>> > 0x644c
>>> > 0x644c
>>> > [   14.594366] [drm]   Encoders:
>>> > [   14.594367] [drm]     DFP1: INTERNAL_UNIPHY1
>>> > [   14.594368] [drm] Connector 1:
>>> > [   14.594369] [drm]   DVI-D-1
>>> > [   14.594370] [drm]   HPD4
>>> > [   14.594371] [drm]   DDC: 0x6460 0x6460 0x6464 0x6464 0x6468 0x6468
>>> > 0x646c
>>> > 0x646c
>>> > [   14.594372] [drm]   Encoders:
>>> > [   14.594373] [drm]     DFP2: INTERNAL_UNIPHY
>>> > [   14.594373] [drm] Connector 2:
>>> > [   14.594374] [drm]   VGA-1
>>> > [   14.594376] [drm]   DDC: 0x6430 0x6430 0x6434 0x6434 0x6438 0x6438
>>> > 0x643c
>>> > 0x643c
>>> > [   14.594376] [drm]   Encoders:
>>> > [   14.594377] [drm]     CRT1: INTERNAL_KLDSCP_DAC1
>>> >
>>> > Above is what seems relevant from "dmesg"
>>> >
>>> > ATI/AMD proprietary FGLRX graphics driver (post-updates release) is the
>>> > option from "System Settings>additional drivers" is what I leaning
>>> > toward.
>>> > What do you think?
>>>
>>> I wouldn't hesitate to use the FGLRX driver... but if your wary of
>>> doing it, it may not be necessary.
>>>
>>> I found several posts from folks who suggest that support for HDMI
>>> audio in the open source drivers is experimental (in Ubuntu 12.10
>>> anyway) and in order to use it you need to enable it like so:
>>> ---
>>> In a terminal run "gksu gedit /etc/default/grub" and add the
>>> "radeon.audio=1" parameter to GRUB_CMDLINE_LINUX_DEFAULT so it looks
>>> something like this:
>>>
>>>     GRUB_CMDLINE_LINUX_DEFAULT="quiet splash radeon.audio=1"
>>>
>>> Save the file and run "sudo update-grub."
>>>
>>> Reboot.
>>> ---
>>> _______________________________________________
>>> mythtv-users mailing list
>>> mythtv-users at mythtv.org
>>> http://www.mythtv.org/mailman/listinfo/mythtv-users
>>
>>
>> Well I took the plunge and installed the FGLRX driver, rebooted and still
>> have a picture, and even a HDMI option in sound settings, but no sound with
>> or without the patch cord. Initially doing the sound test in HDMI was
>> successful, I heard "front right" and "front left". Playing a recording is
>> however mute. Now when I go back into sound settings, none of the options
>> give an audible test, but with the digital option I can see the speakers
>> turn blue when I test either one, but no sound. What can I do now to recover
>> sound?
>>
>> Daryl
>
>
> Here is a snip from the "dmesg" probe:
>
>  [   49.239601] fglrx_pci 0000:01:00.0: irq 46 for MSI/MSI-X
> [   49.240177] [fglrx] Firegl kernel thread PID: 2007
> [   49.240345] [fglrx] Firegl kernel thread PID: 2008
> [   49.240483] [fglrx] Firegl kernel thread PID: 2009
> [   49.240590] [fglrx] IRQ 46 Enabled
> [   49.250144] [fglrx] Reserved FB block: Shared offset:0, size:1000000
> [   49.250146] [fglrx] Reserved FB block: Unshared offset:f8a4000,
> size:45c000
> [   49.250148] [fglrx] Reserved FB block: Unshared offset:3fff4000,
> size:c000
> [   54.035012] [fglrx:firegl_apl_loadDatabase] *ERROR* APL: apl initialize
> fail.
> [   54.038562] [fglrx:firegl_apl_loadDatabase] *ERROR* APL: apl initialize
> fail.
> [   60.104353] [fglrx:firegl_apl_loadDatabase] *ERROR* APL: apl initialize
> fail.
> [   60.106193] [fglrx:firegl_apl_loadDatabase] *ERROR* APL: apl initialize
> fail.
>
> I don't know what this means, but I know it's not good.
>
> Daryl
>
>
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>


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