[mythtv-users] Assistance with digital audio configuration requested

Wed Aug 21 14:07:25 UTC 2013

On Tue, Aug 20, 2013 at 9:27 PM, Joseph Fry <joe at thefrys.com> wrote:

> >> >> >> >> > May I piggy-back a related question here?  On my FE/BE dual
> >> >> >> >> > boot,
> >> >> >> >> > I
> >> >> >> >> > have
> >> >> >> >> > to
> >> >> >> >> > unplug the cord from the headphone jack on the PC to get
> audio
> >> >> >> >> > on
> >> >> >> >> > Windows,
> >> >> >> >> > (it can stay plugged into the TV) and plug it back in for
> >> >> >> >> > Ubuntu.
> >> >> >> >> > I
> >> >> >> >> > have
> >> >> >> >> > HDMI out of PC and HDMI into TV. Audio should work on the
> HDMI
> >> >> >> >> > for
> >> >> >> >> > both
> >> >> >> >> > scenario's shouldn't it?
> >> >> >> >> >
> >> >> >> >> I am a bit confused.... are you saying that plugging in your
> >> >> >> >> headphones mutes the HDMI in windows, but not in Ubuntu?
> >> >> >> >>
> >> >> >> > It's a 1/8" stereo patch cord from audio in on my TV going to
> the
> >> >> >> > audio
> >> >> >> > out
> >> >> >> > (aka headphone jack) of my PC. But yeah, when I unplug it from
> the
> >> >> >> > PC
> >> >> >> > I
> >> >> >> > get
> >> >> >> > sound in windows (I assume through the HDMI) then I have to plug
> >> >> >> > it
> >> >> >> > back
> >> >> >> > in
> >> >> >> > to get sound in Ubuntu. I would rather stay with Ubuntu but if I
> >> >> >> > have
> >> >> >> > to
> >> >> >> > switch (LG's blu-ray not supported in linux) it would be nice to
> >> >> >> > have
> >> >> >> > HDMI
> >> >> >> > audio in both cases.
> >> >> >>
> >> >> >> Most likely you just need to change your default audio device in
> >> >> >> Ubuntu to your video card's HDMI port.  I don't have an Ubuntu box
> >> >> >> in
> >> >> >> front of me (just mythbuntu), but if you look in the audio
> >> >> >> configuration panels, you should find something.  Assuming your
> >> >> >> system
> >> >> >> has drivers for the video card's sound capabilities.
> >> >> >
> >> >> > I have two options in sound output, analog and digital, neither
> >> >> > function
> >> >> > with the patch cord unplugged and only the analog works with the
> cord
> >> >> > in.
> >> >> > There was a disk with the video card for windows. Any idea how I
> >> >> > could
> >> >> > find
> >> >> > software for Ubuntu?
> >> >>
> >> >> Typically, you will want to stick with the drivers available in the
> >> >> Ubuntu repositories.  If your card has any vendor created drivers
> >> >> available, you should find them in the "Additional Drivers" app.
> >> >> Typically Ubuntu will inform you with a popup that vendor provided
> >> >> drivers are available for your card.
> >> >>
> >> >> While in most cases, the open source drivers are adequate... however
> >> >> advanced features of the card are often only possible with the binary
> >> >> drivers from the vendor.  For licensing reasons, most distros don't
> >> >> install these by default.
> >> >>
> >> >> What video card do you have?
> >> >>
> >> >> It is also possible that the outputs your seeing are only showing one
> >> >> of the cards.... you may have to do something to switch cards to see
> >> >> the other device's outputs.
> >> >> _______________________________________________
> >> >> mythtv-users mailing list
> >> >> mythtv-users at mythtv.org
> >> >> http://www.mythtv.org/mailman/listinfo/mythtv-users
> >> >
> >> >
> >> > I believe that it is a MSI R5450 series VGA/HDMI/DVI 1Gb card.
> Searching
> >> > for
> >> > additional drivers shows four options, three of which are
> "experimental
> >> > beta" the forth is (post-release updates) and looking at this again
> >> > reminds
> >> > me that I looked here a while back, tried one? option that failed
> >> > miserably
> >> > and I ended up wiping and reinstalling 12.04/64. The post-release
> should
> >> > be
> >> > OK, do you think? Is there a way to just un install that driver,
> instead
> >> > of
> >> > the earlier drastic solution? As I recall the screen was rendered
> >> > useless
> >> > last time, I would probably only be able to get a terminal from a live
> >> > CD
> >> > boot, didn't think of that then.
> >> >
> >> > Daryl
> >>
> >> If it fails, you can still get to a console.  The graphics drivers are
> >> only used in X... just Ctrl+Alt+F1 (or F2,F3,F4...) to open a terminal
> >> session.  F7 is your X session.
> >>
> >> Often all you need to do if it fails is rename you xorg.conf  (mv
> >> /etc/X11/xorg.conf /etc/X11/xorg.conf.bak) to clear the settings out
> >> of it... X11 should properly detect the settings and work fine.
> >> _______________________________________________
> >> mythtv-users mailing list
> >> mythtv-users at mythtv.org
> >> http://www.mythtv.org/mailman/listinfo/mythtv-users
> >
> >
> > I'm still just a tad apprehensive, when I highlight the post-release
> deiver
> > it describes itself with the following text:
> >  3D-accelerated proprietary graphics driver for ATI cards.
> >
> > This driver is required to fully utilise the 3D potential of some ATI
> > graphics cards, as well as provide 2D acceleration of newer cards.
> >
> > All this talk of 3D and 2D acceleration, do you think there is underlying
> > audio benefits in there somewhere?
> >
>
> 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.
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://www.mythtv.org/mailman/listinfo/mythtv-users
>

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?

Daryl
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.mythtv.org/pipermail/mythtv-users/attachments/20130821/95d14459/attachment.html>