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Old 06-07-2007, 10:35 AM   #1
Registered: Jan 2006
Location: Romania
Distribution: Suse 12.0, Slackware 12.1, Debian, Ubuntu, Gentoo
Posts: 301

Rep: Reputation: 30
buzzing/distorted sound with creative sb live sound card

The sound is sometimes a bit distorted on Linux, and it happened on all distro's I used so far (Suse, Mandrake and Slackware).
The weird part is that it only happens occasionally. If I turn my mic on, it gets worse. Also, it seems to be mostly related with the thing labeled as "PCM" with kmix, but it can still be heard with it turned off.
I have an Creative Labs SB Live! card, and it uses the emu10k1 module.
This does not happen on windoze (although I haven't been on it much lately to be able to check) so I doubt it is a hardware issue. Also, I've used Mandrake about 3 years ago, when the card and the speaker were new, and it happened a few times.

This is what lspci prints out:
00:00.0 Host bridge: VIA Technologies, Inc. VT8377 [KT400/KT600 AGP] Host Bridge (rev 80)
00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI Bridge
00:0b.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 0a)
00:0b.1 Input device controller: Creative Labs SB Live! Game Port (rev 0a)
00:0f.0 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
00:10.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81)
00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge [KT600/K8T800/K8T890 South]
00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 60)
00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 78)
01:00.0 VGA compatible controller: nVidia Corporation NV34 [GeForce FX 5200] (rev a1)
Any ideas regarding what I can do? Are there any specific modules for this card that don't come with the standard kernel?
Any info might help. Thanks.
Old 06-07-2007, 09:51 PM   #2
Registered: Oct 2006
Posts: 460

Rep: Reputation: 31
the linux driver for this card can overdrive the card and cause distortion.
just turn it down and all is well.


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