Bug 125594 - VIA Soundcard detected, but distorted sound
Summary: VIA Soundcard detected, but distorted sound
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 2
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Arjan van de Ven
QA Contact: Brian Brock
URL:
Whiteboard:
: 125602 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2004-06-09 07:02 UTC by Holger Koch
Modified: 2007-11-30 22:10 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2004-06-10 06:04:36 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Holger Koch 2004-06-09 07:02:09 UTC
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)

Description of problem:
I installed FC-2 x86_64 on my Laptop ( AMD Mobile Athlon64 (2800+ 
MHz, 1 MByte L2-Cache), VIA K8T800, VIA 
Technologies|VT8233/A/8235/8237 AC97 Audio Controller).

After Reboot, all looks good. The module snd_mixer_oss, 
snd_via82xx,snd_pcm,snd_timer,snd_ac97_codec,snd_mpu401_uart,snd_rawmi
di,snd_seq_device are loaded.

When i run "soundcard detection", i see my soundcard and the Modul: 
snd-via82xx. But if i play the "test sound", i hear the sound absolut 
distorted. It played a small part of the sound and then loop the end. 
Then play the next part and loop again, and so on. 

The top command shows me, that at the moment i start the "test 
sound", the cpu load grows rapid. Before, the cpu is idle at 99%. 
During the test sound, i have nearly 20% user Load and 70%wa, nearly 
0% idle. So i think, there is no more CPU to play the test sound, no 
data are transmitted to the soundcard and so the sound loops.

Version-Release number of selected component (if applicable):
kernel-2.6.5-1.358

How reproducible:
Always

Steps to Reproduce:
1.start of fedora runlevel 5
2.run "soundcard detection"
3.play testsound
    

Actual Results:  i hear crazy sound and the cpu is under heavy load.

Additional info:

Comment 1 Holger Koch 2004-06-09 08:59:18 UTC
*** Bug 125602 has been marked as a duplicate of this bug. ***

Comment 2 Holger Koch 2004-06-09 16:24:25 UTC
After i add the kernelparameter acpi=off, the sound works fine. In 
the /var/log/messages i found an entry 
ACPI-0179: *** Warning: The ACPI AML in your computer contains 
errors, please nag the manufacturer to correct it.
ACPI-0182: *** Warning: Allowing relaxed access to fields; turn on 
CONFIG_ACPI_DEBUG for details.

Can be this the problem?

Comment 3 Len Brown 2004-06-10 03:45:46 UTC
please attach the complete dmesg and /proc/interrupts from the two cases -- 
with and without acpi=off. 

Comment 4 Holger Koch 2004-06-10 06:03:28 UTC
the problem is the same as in bug #125592. Please see there for 
further information.

best regards

Holger Koch


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