Message-Id: <5.1.0.14.2.20050202134106.041be8f8@171.71.163.14>
Date: Wed, 02 Feb 2005 13:55:23 +1100
To: Timothy Miller <theosib@gmail.com>
From: Lincoln Dale <ltd@cisco.com>
Subject: Re: ALSA HELP: Crackling and popping noises with via82xx
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <9871ee5f05020118343effed7@mail.gmail.com>
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At 01:34 PM 2/02/2005, Timothy Miller wrote:
>I've mentioned this problem before.  It seemed to go away around the
>2.6.8 timeframe, but when I started using 2.6.9, it came back.   I'm
>using 2.6.10, and it's still happening.

almost identical system here, other than i'm using an ASUS A7V600 
motherboard but otherwise have identical chipset, graphics card.
(although the ASUS board has a rev60 version of the sound driver).

no problems with audio crackling at all, using 2.6.10 and 2.6.1-rc2-mm2 
with audio compiled into the kernel (not using modules for OSS/ALSA).

perhaps the interrupt is shared with some other device?
perhaps your speakers are dying?

this is my mythtv box so i'd certainly notice if the audio was bung.

[root@spam root]# uname -a
Linux spam 2.6.10ltd1 #1 Sun Jan 30 21:06:01 EST 2005 i686 athlon i386 
GNU/Linux

[root@spam root]# lspci
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
00:0a.0 Multimedia video controller: Brooktree Corporation Bt878 Video 
Capture (rev 11)
00:0a.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture 
(rev 11)
00:0e.0 Multimedia video controller: Conexant Winfast TV2000 XP (rev 05)
00:0e.2 Multimedia controller: Conexant: Unknown device 8802 (rev 05)
00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA RAID 
Controller (rev 80)
00:0f.1 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 [K8T800 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)
00:13.0 Multimedia video controller: Brooktree Corporation Bt848 Video 
Capture (rev 12)
01:00.0 VGA compatible controller: ATI Technologies Inc RV280 [Radeon 9200 
SE] (rev 01)
01:00.1 Display controller: ATI Technologies Inc RV280 [Radeon 9200 SE] 
(Secondary) (rev 01)

[root@spam root]# cat /proc/interrupts
            CPU0
   0:  160440190    IO-APIC-edge  timer
   1:       6157    IO-APIC-edge  i8042
   7:     118047    IO-APIC-edge  parport0
   9:          0   IO-APIC-level  acpi
  12:     165567    IO-APIC-edge  i8042
  14:     403308    IO-APIC-edge  ide0
  15:    1685009    IO-APIC-edge  ide1
  16:   59442009   IO-APIC-level  bttv0, bt878
  17:          0   IO-APIC-level  cx88[0], cx88[0]
  18:          3   IO-APIC-level  bttv1
  21:         37   IO-APIC-level  ehci_hcd, uhci_hcd, uhci_hcd, uhci_hcd, 
uhci_hcd
  22:      48672   IO-APIC-level  VIA8237
  23:     139365   IO-APIC-level  eth0


cheers,

lincoln.
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