In kernel-2.6.10-1.737_FC3 (and earlier) versions recording from a line work poorly for emu10k1. sound either have background noice or recording quality is poor. In the same time playing sound seems to be working file. Sound samples attached. There was no such problem in 2.4 /etc/sysconfig/hwconf class: OTHER bus: PCI detached: 0 driver: emu10k1-gp desc: "Creative Labs SB Live! MIDI/Game Port" vendorId: 1102 deviceId: 7002 subVendorId: 1102 subDeviceId: 0020 pciType: 1 pcidom: 0 pcibus: 3 pcidev: 2 pcifn: 1 aumix: vol:48:48:P bass:50:50:P treble:50:50:P synth:100:100:P pcm:74:74:P speaker:0:0:P line:77:77:R mic:0:0:P cd:0:0:P pcm2:92:92:P igain:4:4:P line1:0:0:P dig1:0:0:P phin:0:0:P phout:100:100:P video:0:0:P
Created attachment 109696 [details] Noice in arecord a.wav : Recording WAVE 'a.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
Created attachment 109698 [details] recording at 22050, poor quality, static in background /usr/bin/esdrec -m -r 22050 s_22050.wav_FF.mZ5855 /usr/bin/sox -t raw -r 22050 -w -s -c 1 s_22050.wav_FF.mZ5855 s_22050.wav esdplay s_22050.wav
Created attachment 109699 [details] recording at 44100, poor quality, intermitten signal /usr/bin/esdrec -m -r 44100 s_44100.wav_FF.Mw5864 /usr/bin/sox -t raw -r 44100 -w -s -c 1 s_44100.wav_FF.Mw5864 s_44100.wav esdplay s_44100.wav
Created attachment 109700 [details] disruption of signal at 32000 /usr/bin/esdrec -m -r 32000 s_32000.wav_FF.ju6071 /usr/bin/sox -t raw -r 32000 -w -s -c 1 s_32000.wav_FF.ju6071 s_32000.wav aplay s_32000.wav
An update has been released for Fedora Core 3 (kernel-2.6.12-1.1372_FC3) which may contain a fix for your problem. Please update to this new kernel, and report whether or not it fixes your problem. If you have updated to Fedora Core 4 since this bug was opened, and the problem still occurs with the latest updates for that release, please change the version field of this bug to 'fc4'. Thank you.
exactly the same problem with kernel-2.6.12-1.1372_FC3 (I did not upgraded to fc4 yet). This is a very annoying bug, I can not use the sound since 2.6 because of it.
I'd hoped that one of the many upstream alsa resyncs would have fixed this. As this bug has been around for quite a while, you may have better luck reporting it directly to the ALSA developers at https://bugtrack.alsa-project.org
I have also troubles recording sound with ALSA drivers for emu10k1. I cannot record any sound at all even with testing kernel: Linux erazim.devnull-lab.cz 2.6.13-1.1524_FC4 #1 Wed Sep 21 00:00:00 EDT 2005 i686 athlon i386 GNU/Linux [techie@erazim ~]$ more /etc/sysconfig/hwconf - class: OTHER bus: PCI detached: 0 driver: emu10k1-gp desc: "Creative Labs SB Live! MIDI/Game Port" vendorId: 1102 deviceId: 7002 subVendorId: 1102 subDeviceId: 0020 pciType: 1 pcidom: 0 pcibus: 0 pcidev: a pcifn: 1 - tested with arecord/aplay, audacity, skype, ...
Ah, I have forgotten relevant part of hwconf: class: AUDIO bus: PCI detached: 0 driver: snd-emu10k1 desc: "Creative Labs SB Live! EMU10k1" vendorId: 1102 deviceId: 0002 subVendorId: 1102 subDeviceId: 8065 pciType: 1 pcidom: 0 pcibus: 0 pcidev: a pcifn: 0 -
and also: [techie@erazim ~]$ cat /proc/asound/cards 0 [Live ]: EMU10K1 - SB Live [Unknown] SB Live [Unknown] (rev.10, serial:0x80651102) at 0xb000, irq 11 [techie@erazim ~]$ cat /proc/asound/version Advanced Linux Sound Architecture Driver Version 1.0.9b (Thu Jul 28 12:20:13 2005 UTC). [techie@erazim ~]$