[mythtv-users] Minimum hardware requirements for a Frontend

Steve Adeff adeffs at gmail.com
Wed Jan 4 08:00:10 UTC 2006


On Wednesday 04 January 2006 02:14, Ian Forde wrote:
> On Wed, 2006-01-04 at 01:36 -0500, Steve Adeff wrote:
> > > your motherboard should have the Realtek ALC850 which is the same as my
> > > MSI board and works fine when using the intel ac97 ALSA drivers:
>
> Yep - definitely the ALC850.  And the intel ac97 drivers load up.
> Incidentally, the vendor is DFI, not AFI.  Typo on my part...

Yea, I figured, unless your motherboard was made by an semi-obscure punk 
band...

>
> > > snd_intel8x0           33664  0
> > > snd_ac97_codec        105028  1 snd_intel8x0
> > > snd_ac97_bus            3712  1 snd_ac97_codec
> > > snd_pcm_oss            52896  0
> > > snd_mixer_oss          17536  1 snd_pcm_oss
> > > snd_pcm                89480  3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
> > > snd_timer              23432  1 snd_pcm
> > > snd                    52704  6
> > > snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
> >
> > I should point out, this is for both the ALC850 on the K8n and the ALC655
> > on my KN1.
> > Also, some boards have a BIOS setting where you can force the audio
> > chipset into their native mode or AC97 mode. I haven't come across this
> > with the Realtek chips, but it could still be out there on another
> > motherboard. OR If you see such a thing in your BIOS and your having
> > trouble with your sound, set it to AC97 mode an ALSA should detect it as
> > an AC97 audio chip and load the appropriate intel drivers.
>
> Mine only has the BIOS setting: "AC97 Audio" which can be set to "Auto"
> or "Disabled".  So no native mode... Alsa had no trouble loading the
> drivers, and PCM audio worked just fine.  It's just the AC3 audio that
> doesn't work.  If yours is working fine, can you post the 'lspci -v'
> output and send me your asound.state and .asoundrc files?

BIOS: same here.

.asoundrc for ALC850 is attached.

-- 
Steve
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# Override the default output used by ALSA. 
# If you do not override the default, your default 
# device is identical to the (unmixed) analog device 
# shown below. If you prefer mixed and/or digital 
# output, uncomment the appropriate four lines below 
# (only one slave.pcm line). 
pcm.!default { 
 type plug 
## Uncomment the following to use mixed analog by default 
# slave.pcm "dmix-analog" 
## Uncomment the following to use unmixed digital by default 
 slave.pcm "digital" 
# slave.pcm "digital-hw" 
## Uncomment the following to use mixed digital by default 
# slave.pcm "dmix-digital" 
} 
 
# Alias for analog output on the nForce2 (hw:0,0) 
# - This is identical to the device named "default"--which 
# always exists and refers to hw:0,0 (unless overridden) 
# - Therefore, we can specify "hw:0,0", "default", or "analog" 
# to access analog output on the nForce2 
pcm.analog { 
 type plug 
 slave.pcm "analog-hw" 
} 
 
# Control device (mixer, etc.) for the nForce2 card 
ctl.analog { 
 type hw 
 card 0 
} 
 
# Alias for (rate-converted) mixed analog output on the 
# nForce2 (hw:0,0) 
# - This will accept audio input--regardless of rate--and 
# convert to the rate required for the dmix plugin 
# (in this case 48000Hz) 
pcm.mixed-analog { 
 type plug 
 slave.pcm "dmix-analog" 
} 
 
# Control device (mixer, etc.) for the nForce2 card 
ctl.mixed-analog { 
 type hw 
 card 0 
} 
 
# Alias for (rate-converted) digital (S/PDIF) output on the 
# nForce2 (hw:0,2) 
# - This will accept audio input--regardless of rate--and 
# convert to the rate required for the S/PDIF hardware 
# (in this case 48000Hz) 
pcm.digital { 
 type plug 
 slave.pcm "digital-hw" 
} 
 
# Control device (mixer, etc.) for the nForce2 card 
ctl.digital { 
 type hw 
 card 0 
} 
 
# Alias for mixed (rate-converted) digital (S/PDIF) output on the 
# nForce2 (hw:0,2) 
# - This will accept audio input--regardless of rate--and 
# convert to the rate required for the S/PDIF hardware 
# (in this case 48000Hz) 
pcm.mixed-digital { 
 type plug 
 slave.pcm "dmix-digital" 
} 
 
# Control device (mixer, etc.) for the nForce2 card 
ctl.mixed-digital { 
 type hw 
 card 0 
} 
 
# The following devices are not useful by themselves. They 
# require specific rates, channels, and formats. Therefore, 
# you probably do not want to use them directly. Instead use 
# of of the devices defined above. 
 
# Alias for analog output on the nForce2 (hw:0,0) 
# Do not use this directly--it requires specific rate, 
# channels, and format 
pcm.analog-hw { 
 type hw 
 card 0 
 # The default value for device is 0, so no need to specify 
} 
 
# Control device (mixer, etc.) for the nForce2 card 
ctl.analog-hw { 
 type hw 
 card 0 
} 
 
# Alias for digital (S/PDIF) output on the nForce2 (hw:0,2) 
# Do not use this directly--it requires specific rate, 
# channels, and format 
pcm.digital-hw { 
 type hw 
 card 0 
 device 2 
} 
 
# Control device (mixer, etc.) for the nForce2 card 
ctl.digital-hw { 
 type hw 
 card 0 
} 
 
# Direct software mixing plugin for analog output on 
# the nForce2 (hw:0,0) 
# Do not use this directly--it requires specific rate, 
# channels, and format 
pcm.dmix-analog { 
 type dmix 
 ipc_key 1234 
 slave { 
 pcm "analog-hw" 
 period_time 0 
 period_size 1024 
 buffer_size 4096 
 rate 48000 
 } 
} 
 
# Control device (mixer, etc.) for the nForce2 card 
ctl.dmix-analog { 
 type hw 
 card 0 
} 
 
# Direct software mixing plugin for digital (S/PDIF) output 
# on the nForce2 (hw:0,2) 
# Do not use this directly--it requires specific rate, 
# channels, and format 
pcm.dmix-digital { 
 type dmix 
 ipc_key 1235 
 slave { 
 pcm "digital-hw" 
 period_time 0 
 period_size 1024 
 buffer_size 4096 
 rate 48000 
 } 
} 
 
# Control device (mixer, etc.) for the nForce2 card 
ctl.dmix-digital { 
 type hw 
 card 0 
} 


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