[SOVED] Strange audio problem with 2.6.26-1

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[SOVED] Strange audio problem with 2.6.26-1

Postby fsmithred » 2008-09-21 23:42

I've been running lenny with the 2.6.25-2 kernel with good results. Today, I installed 2.6.26-1, and there's a problem with audio - no sound from rear jack, which goes to my stereo, but sound from headphones in front jack is fine. I tried it with amarok and with mplayer. If I reboot to 2.6.25-2, I get sound from both jacks again.

I don't see anything obvious in system logs, 'lsmod |grep snd' looks the same with both kernels, and I can't think of what else to look at. Any suggestions are welcome.

Motherboard is ASUS M2V (via 8237a), with on-board Intel High Def sound, and there's an old FM801 sound card that's installed and configured, but I'm not using it for anything right now. Also using nvidia graphics driver, if that makes any difference.
Last edited by fsmithred on 2008-11-30 18:27, edited 1 time in total.
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Postby Lavene » 2008-09-22 05:08

I upgraded to the .26-1 kernel yesterday and experienced a couple of weird effects, like the sliders in the alsa mixer had been pulled to some random levels; the main all the way down and the mic (I never use the mic) turned on and set to max. Have you tried running alsaconf then check the mixer?
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Postby fsmithred » 2008-09-22 12:51

Yes, the first thing I checked was alsamixer, and the settings hadn't changed. I didn't run alsaconf. I'm assuming that it's configured, since I can use the headphones, and it still works with the older kernel.

OK, I ran alsaconf, but it didn't change anything. When I rebooted to the older kernel, I saw a message go by about a problem with alsactl (alsactl store, I think), but now I can't find it. After starting amarok with either kernel running, dmesg shows:

Code: Select all
[  208.625021] hda-intel: Invalid position buffer, using LPIB read method instead.


Here's another post that mentions sound problems with the same kernel.
viewtopic.php?t=31004&highlight=2+6+26+sound
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Postby fsmithred » 2008-11-24 17:20

Bump.

There have been a few kernel updates since I last posted on this thread, and the problem is still there. No sound from rear jacks in 2.6.26-1, but 2.6.25-2 is fine. (front jacks work with both kernels.) I removed the extra sound card and tried reinstalling alsa, but that didn't help. I figured I'd run it by you folks one more time before I file a bug report.

Is there some way to find out what options were used when compiling the sound modules for both kernel versions, to see if there's a difference, and compile my own if there is?

Any other ideas on how to troubleshoot this?

Is there any other information I should supply for a bug report? (in addition to the basic information that the bug report instructions ask for.)

Running:
Debian lenny (up to date)
linux-image-2.6.26-1-686
alsa-base 1.0.17.dfsg-4 (see below for more)

Code: Select all
~# lspci
00:00.0 Host bridge: VIA Technologies, Inc. K8T890CF Host Bridge
00:00.1 Host bridge: VIA Technologies, Inc. VT3351 Host Bridge
00:00.2 Host bridge: VIA Technologies, Inc. VT3351 Host Bridge
00:00.3 Host bridge: VIA Technologies, Inc. VT3351 Host Bridge
00:00.4 Host bridge: VIA Technologies, Inc. VT3351 Host Bridge
00:00.5 PIC: VIA Technologies, Inc. VT3351 I/O APIC Interrupt Controller
00:00.6 Host bridge: VIA Technologies, Inc. Device 6238
00:00.7 Host bridge: VIA Technologies, Inc. VT3351 Host Bridge
00:01.0 PCI bridge: VIA Technologies, Inc. [K8T890 North / VT8237 South] PCI Bridge
00:02.0 PCI bridge: VIA Technologies, Inc. K8T890 PCI to PCI Bridge Controller
00:03.0 PCI bridge: VIA Technologies, Inc. K8T890 PCI to PCI Bridge Controller
00:03.1 PCI bridge: VIA Technologies, Inc. K8T890 PCI to PCI Bridge Controller
00:03.2 PCI bridge: VIA Technologies, Inc. K8T890 PCI to PCI Bridge Controller
00:03.3 PCI bridge: VIA Technologies, Inc. K8T890 PCI to PCI Bridge Controller
00:0f.0 IDE interface: VIA Technologies, Inc. VT8237A SATA 2-Port Controller (rev 80)
00:0f.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 07)
00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev a0)
00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev a0)
00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev a0)
00:10.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev a0)
00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8237A PCI to ISA Bridge
00:11.7 Host bridge: VIA Technologies, Inc. VT8251 Ultra VLINK Controller
00:13.0 PCI bridge: VIA Technologies, Inc. VT8237A Host Bridge
00:13.1 PCI bridge: VIA Technologies, Inc. VT8237A PCI to PCI Bridge
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
02:00.0 VGA compatible controller: nVidia Corporation NV36 [GeForce PCX 5750] (rev a2)
04:00.0 Ethernet controller: Attansic Technology Corp. L1 Gigabit Ethernet Adapter (rev b0)
07:08.0 Ethernet controller: 3Com Corporation 3cSOHO100-TX Hurricane (rev 30)
80:01.0 Audio device: VIA Technologies, Inc. VT1708/A [Azalia HDAC] (VIA High Definition Audio Controller) (rev 10)




Code: Select all
~# lsmod |grep snd
snd_hda_intel         309976  0
snd_pcm                68228  1 snd_hda_intel
snd_seq                45872  0
snd_timer              21320  2 snd_pcm,snd_seq
snd_seq_device          7564  1 snd_seq
snd                    48772  5 snd_hda_intel,snd_pcm,snd_seq,snd_timer,snd_seq_device
soundcore               7488  1 snd
snd_page_alloc          9992  2 snd_hda_intel,snd_pcm




Code: Select all
~# dpkg -l |grep alsa
ii  alsa-base                             1.0.17.dfsg-4              ALSA driver configuration files
ii  alsa-utils                            1.0.16-2                   ALSA utilities
ii  gstreamer0.10-alsa                    0.10.20-1                  GStreamer plugin for ALSA
ii  libpt-1.10.10-plugins-alsa            1.10.10-2                  Portable Windows Library Audio Plugin for the ALSA Interface
ii  libsdl1.2debian-alsa                  1.2.13-3                   Simple DirectMedia Layer (with X11 and ALSA options)
ii  libsox-fmt-alsa                       14.1.0-1                   SoX alsa format I/O library
ii  xfce4-mixer-alsa                      4.4.2-3                    Xfce4 Mixer ALSA backend
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[SOLVED] 2.6.26-1-686 sound snd-hda-intel VT1708A ALC861

Postby fsmithred » 2008-11-30 18:23

Added option to /etc/modprobe.d/sound:

model=3stack


To activate it, you can 'modprobe -rv snd-hda-intel' and then 'modprobe -v snd-hda-intel' (-v because I like to see that it's doing something.)


These were helpful:

https://bugs.launchpad.net/ubuntu/+sour ... bug/138322
https://help.ubuntu.com/community/HdaIntelSoundHowto
http://www.mjmwired.net/kernel/Document ... ration.txt
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