Author Topic: MythTV - Live TV is fuzzy (with horizontal lines) and NO sound  (Read 2810 times)

ferdies

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After doing a lengthy troubleshooting for my TV tuner to be recognized by LinuxMce/MythTV

http://forum.linuxmce.org/index.php?topic=5545.0

the problem that I am currently encountering are the following:
1. Live TV is fuzzy - but still can see the show.  (To isolate the problem, since I am thinking it might be my cable provider's issue, I booted my system using Windows Vista MCE - that is same hardware, and Live TV in Vista is very very clear). Thus, I am still having problem with the driver.

Is there any other setup I need to do? I did some change in MythTVbackend and Mythtvfrontend.

2. I have no sound on Live TV...Other features of Linux MCE like watching DVD, music do have sound.

I already followed some of the instructions from these sites:
http://www.mythtv.org/wiki/index.php/Configuring_Digital_Sound
http://www.mythtv.org/wiki/index.php/Configuring_Digital_Sound_with_AC3_and_SPDIF

Since I am using Digital Coax/SPDIF for my sound system (solved this problem based on this http://forum.linuxmce.org/index.php?topic=5539.0)

Any help or idea? Thanks.

ferdies

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Re: MythTV - Live TV is fuzzy (with horizontal lines) and NO sound
« Reply #1 on: June 20, 2008, 05:45:45 am »
I have this output:
----------------------
linuxmce@dcerouter:~$ aplay -L
front:CARD=Intel,DEV=0
    HDA Intel, ALC880 Analog
    Front speakers
surround40:CARD=Intel,DEV=0
    HDA Intel, ALC880 Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
    HDA Intel, ALC880 Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
    HDA Intel, ALC880 Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
    HDA Intel, ALC880 Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
    HDA Intel, ALC880 Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
null
    Discard all samples (playback) or generate zero samples (capture)
---------------------------
linuxmce@dcerouter:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC880 Analog [ALC880 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: ALC880 Digital [ALC880 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
--------------

Any idea on what to put in the MythTV frontend?

On Mythfrontend Utilities/Setup->Setup-General go to the Audio page and set your audio device as
 Audio output device        = ???
 Passthrough outputdevice   = ???
 Enable AC3 to SPDIF passthrough   check
 Enable DTS to SPDIF passthrough   check


Thanks.

ferdies

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Re: MythTV - Live TV is fuzzy (with horizontal lines) and NO sound
« Reply #2 on: June 23, 2008, 05:43:01 pm »
I have checked also that:
----------------

linuxmce@dcerouter:~$ mplayer -ac help | grep -i dts

ffdts       ffmpeg    working   DTS  [dts]
hwdts       hwac3     working   DTS through S/PDIF

-----------------
linuxmce@dcerouter:~$ mplayer -ac help | grep -i ac3

raatrc      realaud   working   RealAudio ATRAC3  [atrc.so.6.0]
ra10atrc    realaud   working   RealPlayer 10 RealAudio ATRAC3  [atrc.so]
raatrcwin   realaud   working   Win32 RealAudio ATRAC3  [atrc3260.dll]
raatrcmac   realaud   working   Mac OS X RealAudio ATRAC3  [atrc.bundle/Contents/MacOS/atrc]
ffmac3      ffmpeg    untested  Macintosh Audio Compression and Expansion 3:1  [mace3]
a52         liba52    working   AC3-liba52  [liba52]
ac3         libac3    working   AC3-libac3  [libac3]
hwac3       hwac3     working   AC3 through S/PDIF
hwdts       hwac3     working   DTS through S/PDIF
atrac3      acm       problems  Sony ATRAC3  [atrac3.acm]

I also have found these sites, but cannot help my "sound" problem.  Having a fuzzy TV reception at this time is fine, as I am planning to change my TV tuner. But for the spdif,  I need to make it work since my amp is connected via spdif coax.

http://www.gossamer-threads.com/lists/mythtv/users/225533?page=last
http://www.mythtv.org/pipermail/mythtv-users/2006-August/145481.html

Experts, please I need your assistance. Thanks.


Zaerc

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Re: MythTV - Live TV is fuzzy (with horizontal lines) and NO sound
« Reply #3 on: June 23, 2008, 07:48:37 pm »
"Change is inevitable. Progress is optional."
-- Anonymous


ferdies

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Re: MythTV - Live TV is fuzzy (with horizontal lines) and NO sound
« Reply #4 on: June 24, 2008, 12:48:05 am »
Maybe this helps with your problem too: http://forum.linuxmce.org/index.php?topic=5267.msg31656#msg31656


Thanks. But the above did not seem to be applicable since I have only 1 TV tuner (wherein I also disabled the cx88 snd): http://forum.linuxmce.org/index.php?topic=5551.0

This thread detailed on how I installed the tv tuner. My DVD, music, all worked properly, except MythTV Live TV. Thus, Intel HDA  is working perfectly but not in Live TV.


linuxmce@dcerouter:~$ cat /proc/asound/cards
 0 [Intel          ]: HDA-Intel - HDA Intel
                      HDA Intel at 0xc6efc000 irq 16

linuxmce@dcerouter:~$ asoundconf set-default-card 0
linuxmce@dcerouter:~$

It only showed that I have only 1 sound card. But still I tried asoundconf to be sure.


« Last Edit: June 24, 2008, 01:00:28 am by ferdies »