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Sound problems in Ubuntu 10.10 - Page 2

post #11 of 18
Thread Starter 
I tried just a stereo mp3 file and even it has no bass. So it seems as if the LFE frequencies are being split from the front channels.
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post #12 of 18
Quote:
Originally Posted by axipher View Post

None of the channels are muted. Here's the channels listed:
- Master: 42
- PCM: Full bar, no number underneath
- Front: 100
- Surround: 100
- Center: 0
- LFE: 0

Have you tried Surround to 0 with Front and LFE at 100? If the channels are mixed up also then you'll probably have to create a pcm device (in .asoundrc) that reassigns the channels. The speaker-test utility should tell you what's what by default, try:
Code:
speaker-test -c 8

LFE is usually channel five but to make that work in stereo I believe you have to route it equally into the left and right channel sound. TBH I'm not 100%, I've been trying to wrap my head around ALSA for the past while. I might give this a crack myself since I've got sound more or less working through my Xonar and I think our boards share the same onboard audio. Realtek 892 or something, I freakin can't stand Realtek.

Oh yeah, and you'll need alsa-utils for speaker-test to work and alsa-plugins to remap channels
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post #13 of 18
Thread Starter 
Quote:
Originally Posted by Petrol View Post

Quote:
Originally Posted by axipher View Post

None of the channels are muted. Here's the channels listed:
- Master: 42
- PCM: Full bar, no number underneath
- Front: 100
- Surround: 100
- Center: 0
- LFE: 0

Have you tried Surround to 0 with Front and LFE at 100? If the channels are mixed up also then you'll probably have to create a pcm device (in .asoundrc) that reassigns the channels. The speaker-test utility should tell you what's what by default, try:
Code:
speaker-test -c 8

LFE is usually channel five but to make that work in stereo I believe you have to route it equally into the left and right channel sound. TBH I'm not 100%, I've been trying to wrap my head around ALSA for the past while. I might give this a crack myself since I've got sound more or less working through my Xonar and I think our boards share the same onboard audio. Realtek 892 or something, I freakin can't stand Realtek.

Oh yeah, and you'll need alsa-utils for speaker-test to work and alsa-plugins to remap channels

Thanks, I'll try this tonight. I did upgrade to 11.10 yesterday and it didn't help, I was able to get AlsaMixer 1.0.24 installed though, I'll try 1.0.25 tonight as well.
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post #14 of 18
In case you haven't made progress, here's how to remap the channels
Code:
pcm.name {
        type route              # Route & Volume conversion PCM
        slave STR               # Slave name
        # or
        slave {                 # Slave definition
                pcm STR         # Slave PCM name
                # or
                pcm { }         # Slave PCM definition
                [format STR]    # Slave format
                [channels INT]  # Slave channels
        }
        ttable {                # Transfer table (bi-dimensional compound of cchannels * schannels numbers)
                CCHANNEL {
                        SCHANNEL REAL   # route value (0.0 - 1.0)
                }
        }
}

- source
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post #15 of 18
Thread Starter 
Thanks for that info biggrin.gif

I just did the distro upgrade to 12.04 and it disabled automatic login so Teamviewer didn't start up again so I can't even check anything. I'll test this out tonight if the 12.04 upgrade didn't fix the problem.
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post #16 of 18
Hope you can get it working, I'm getting really really really freaking PO'd at the lack of standardization being at the root of all my problems in Linux. Sound is a downright mess and there's no need for some applications to use OSS, and others to use PulseAudio, especially when it all needs to pass through ALSA. What a huge quagmire this whole situation is. I'm on the verge of hurling my monitor across the room if Flash doesn't start playing some freakin sounds already!!!
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post #17 of 18
Quote:
Originally Posted by Petrol View Post

Hope you can get it working, I'm getting really really really freaking PO'd at the lack of standardization being at the root of all my problems in Linux. Sound is a downright mess and there's no need for some applications to use OSS, and others to use PulseAudio, especially when it all needs to pass through ALSA. What a huge quagmire this whole situation is. I'm on the verge of hurling my monitor across the room if Flash doesn't start playing some freakin sounds already!!!

You can do away with Pulse 99% of the time. tongue.gif
post #18 of 18
Thread Starter 
Quote:
Originally Posted by Petrol View Post

Hope you can get it working, I'm getting really really really freaking PO'd at the lack of standardization being at the root of all my problems in Linux. Sound is a downright mess and there's no need for some applications to use OSS, and others to use PulseAudio, especially when it all needs to pass through ALSA. What a huge quagmire this whole situation is. I'm on the verge of hurling my monitor across the room if Flash doesn't start playing some freakin sounds already!!!

Thanks man, hopefully you can get your issues solved as well.
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