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Soldato
Joined
1 Jun 2005
Posts
5,152
Location
Kent
I've come across an issue im having with my thinkpad r61 that i am hoping can be solved by new drivers. The problem is that sound doesn't play quite right, like for instance i was listening to Tom Sawyer by Rush, and the music was perfectly fine but as soon as the vocals started, all the vocals were distorted. After that i tried BBC news stream, and although it wasn't quite as bad, it seems as if it has trouble playing a certain pitch range.

When i booted into XP, all is fine and well with the sound, so its not a hardware issue. The problem is, the thinkpad r61 drivers page only has windows drivers, so how do i go about fixing my problem in ubuntu? Am i out of luck? or is there some way for me to get the windows drivers to work (in which case i would have to choose the XP version of drivers, or the Vista version)?
 
Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)

Running Ubuntu 8.10, and as for ALSA or PulseAudio i have no idea which it is set to use, how do i find out?
 
System -> Preferences -> Sound. Experiment there.

Being that it's Intel you should be experiencing no troubles whatsoever since they have fantastic drivers that are already in the kernel for the most part.
 
I've just tried the ALSA, PulseAudio, OSS and the HDA intel CONEXANT and none of them sound much different, they all have the same issue.
 
Code: 
[B]alsamixer[/B]

Code: 
[B]alsamixergui[/B]

Type either command in the Terminal.

Test with 0dB gain on all inputs.
 
Although both alsamixer and alsamixergui didn't help me (alsamixer only showed master, and the gui only showed master and capture), it lead me to try double click the speaker icon in the top panel, which showed a volume control which had PCM as well as master on it.

Now im not sure what PCM is, it seems to control volume like master, but as it increases it causes distortion. PCM was at about 70% with master quite low, I've now put master to max, and lowered the PCM down to near minimal levels and this has solved the distortion problem.

BillytheImpaler you're right, the intel drivers are good, they were not at fault for this.

Thanks for the help, both of you. :)
 
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