Latest kernel kills my sound

[sirius56]

I am moving my post from another forum because I couldn't find a solution there.

I have an Intel motherboard D102GGC2 with onboard ATI SB450 HDA Audio. This normally uses PCM ALC 833 Analog audio.

When I boot with 2.6.19-1.2911.6.5.fc6, Soundcard Detection shows ATI SB450 is there, but the PCM is blank and there is no sound.

When I revert to 2.6.18-1.2798.fc6, I see PCM Device = ALC 833 Analog and sound is perfect.

Something in 2.6.19 deletes my PCM device resulting in no audio.

I submitted this problem as Bugzilla #231749 but don't expect to hear from that group for a while.

Here is supporting information from Soundcard Detection:
ALSA driver v. 1.0.13
alsa-lib-1.0.13-1.fc6
alsa-util-1.0.13-1.fc6


This is the most serious problem I've had with Linux in two years. Please help me.

[halfabean]

I have experienced the exact same problem. Intel D101G motherboard. I've scoured the internet and pulled most of my hair out by now, any leads would be super.

[chicken078]

I too am having the sound problem with the last 2 kernels (2.6.19-1.2911.6.5.fc6 and 2.6.20-1.2925.fc6). I don't have any sound device after booting (/dev/dsp).

It used to work in 2.6.19-1.2911.6.4.fc6. But I could not see any difference in the kernel configs between that kernel and 2.6.19-1.2911.6.5 kernel. Any idea how to fix this issue?

I have the same ATI SB450 card (module "snd-hda-intel"):
00:14.2 Audio device: ATI Technologies Inc SB450 HDA Audio (rev 01)
Subsystem: Intel Corporation Unknown device d601
Flags: slow devsel, IRQ 16
Memory at 60200000 (64-bit, non-prefetchable) [size=16K]

I see that the module is loaded:

/sbin/lsmod | grep snd:

snd_hda_intel          24025  0
snd_hda_codec         156353  1 snd_hda_intel
snd_seq_dummy           7877  0
snd_seq_oss            33601  0
snd_seq_midi_event     11201  1 snd_seq_oss
snd_seq                51249  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_seq_device         11853  3 snd_seq_dummy,snd_seq_oss,snd_seq
snd_pcm_oss            43617  0
snd_mixer_oss          19393  1 snd_pcm_oss
snd_pcm                75205  3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_timer              25157  2 snd_seq,snd_pcm
snd                    53829  9 snd_hda_intel,snd_hda_codec,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore              11681  1 snd
snd_page_alloc         13769  2 snd_hda_intel,snd_pcm

But I see this message in dmesg:

 hda-intel: no codecs initialized

[sirius56]

Please see Bugzilla #231414.
Thank you.

I have sound but I had to unplug my web camera before boot otherwise I'd only have a microphone in the Gnome mixer and therefore no sound. Fedora kernels seem to be getting worse with every release!

Wayne

[sirius56]

rondonjin, Yes, you would expect that kernels would only get better in time.

I haven't tried it yet, but there is a boot parameter, pnpbios=off , which would turn off bios probing for pnp devices. That would leave configuration of the pnp devices to the kernel.

Meanwhile, I am hoping that Bugzilla #231414 gets some attention.

Thank you.

[zenkoh]

Hi there,

I'll like to confirm that updating to kernel 2.6.20-1.2925.fc6 killed my sound system too. I had to remove it and revert back to 2.6.18-1.2798.fc6 for the sound to return. Btw, I'm using a Powerbook so I'm using the PPC version of the kernel.

The command to remove should be:
yum remove kernel-2.6.20-1.2925.fc6
in the terminal.

[sirius56]

zenkoh, 2.6.18 sound works. 2.6.19 and 2.6.20 do not seem to work. Something got changed.

Please register your experiences with bugzilla #231414 at bugzilla.redhat.com

Thank you.

[marko]

2.6.20-1.2925.fc6 works fine with sound here
Abit AN8 Ultra motherboard and FC6 but I have to admit I've
been booting without my webcam plugged in. I have one
with a microphone and I think there were times in the
past where fedora would detect the microphone and
then quit loading audio modules (snd_intel8x0) because it was
happy at finding that usb microphone. If you don't use the
webcam mic, maybe you can put in your modprobe.conf file:

alias usb-audio-mic off

or whatever lsmod shows is the name for the usb audio module

while making sure your desired modules are loaded (mine are):

alias snd-card-0 snd-intel8x0
options snd-card-0 index=0
options snd-intel8x0 index=0


mark

[sirius56]

marko, Thank you. I will try that.

Please report your comments to bugzilla.redhat.com bug #231414.

It's hard to understand why this bug persisted through 2.6.19 and 2.6.20.

[Narcissus]

Have the same problems on Samsung R40 laptop

00:14.2 Audio device: ATI Technologies Inc SB450 HDA Audio (rev 01)
        Subsystem: Samsung Electronics Co Ltd Unknown device c02b
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 64, Cache Line Size: 32 bytes
        Interrupt: pin ? routed to IRQ 17
        Region 0: Memory at d0400000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>

Same kernels (2.6.19.5 & 2.6.20)


Maybe try 2.6.20 kernel from kernel.org? Or just rebuild fedora kernel from source?

p.s. in 2.6.19.4 it was OK with ALC262 codec ... Now i see only Modem in pcm devices list

has anyone tried to install alsa 1.0.14rc3?

[Narcissus]

I think we need to create bug post for 2.6.20 on bugzilla

[marko]

sirius56
I'm not that confident that my post #9 is a fix, did it work when you tried it?

[sirius56]

marko, no luck here, but thank you for helping.

Evidently, the problem is widespread because I've seen the problem posted in other forums and Intel boards are common.

I hope that anyone who experiences the problem in 2.6.19 or 2.6.20 reports it to bugzilla.redhat.com bug #231414.

[chicken078]

As suggested on the bugzilla site (bugzilla.redhat.com bug #231414), I downloaded the kernel from http://people.redhat.com/cebbert/kernels/ and my sound is back!

I see a new kernel update in testing. So, an official update is going to be released soon if you want to wait.