The microphone of laptop HP 6735s doesn't work. It's a common problem.

Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately we can't fix it without more information. Would you please add the information requested from the "Reporting Sound Bugs" section of https://wiki.ubuntu.com/DebuggingSoundProblems as separate attachments? Thanks in advance.

Hi LucaBalletta . Can you please try installing "linux-backports-modules-alsa-karmic" (then reboot) & report your results? A number of audio problems on HP laptops have been resolved by installing this package. Also please ensure there are no extra "alsa model quirks" in your /etc/modprobe.d/alsa-base.conf

If this does not resolve your issue, please run "apport-collect -p alsa-base 505124" (without the quotes) from the terminal.
Thanks in advance.

I read and executed the DebuggingSoundProblems, so collecting the next informations:

smile@smile-laptop:~$ vi /etc/modprobe.d/alsa-base.conf
smile@smile-laptop:~$ grep "^Codec\|^Vendor Id\|^Subsystem Id\|^Revision Id" /proc/asound/card*/*codec*{,/*} | grep -B2 -A1 $(lspci -nv | grep -A1 0403 | grep Subsystem | sed 's/://g' | awk '{ print $2 }')
grep: /proc/asound/card*/*codec*/*: No such file or directory
/proc/asound/card0/codec#0:Codec: Analog Devices AD1984A
/proc/asound/card0/codec#0:Vendor Id: 0x11d4194a
/proc/asound/card0/codec#0:Subsystem Id: 0x103c3613
/proc/asound/card0/codec#0:Revision Id: 0x100400
smile@smile-laptop:~$ cat /proc/asound/cards
 0 [SB ]: HDA-Intel - HDA ATI SB
                      HDA ATI SB at 0x54400000 irq 16
smile@smile-laptop:~$ lsmod | grep snd
snd_hda_codec_analog 79680 1
snd_hda_intel 31880 2
snd_hda_codec 87584 2 snd_hda_codec_analog,snd_hda_intel
snd_hwdep 9352 1 snd_hda_codec
snd_pcm_oss 44704 0
snd_mixer_oss 18976 1 snd_pcm_oss
snd_pcm 93160 3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_seq_dummy 3460 0
snd_seq_oss 33440 0
snd_seq_midi 8192 0
snd_rawmidi 27360 1 snd_seq_midi
snd_seq_midi_event 8448 2 snd_seq_oss,snd_seq_midi
snd_seq 60608 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer 26992 2 snd_pcm,snd_seq
snd_seq_device 8308 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
snd 77096 16 snd_hda_codec_analog,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore 9088 1 snd
snd_page_alloc 10928 2 snd_hda_intel,snd_pcm
smile@smile-laptop:~$ pwd
/home/smile
smile@smile-laptop:~$ vi alsa-info.sh
smile@smile-laptop:~$ chmod +x alsa-info.sh
smile@smile-laptop:~$ ./alsa-info.sh
ALSA Information Script v 0.4.49
--------------------------------

This script will collect information about your ALSA installation and sound related hardware, to help diagnose your problem.

By default, the collected information will be AUTOMATICALLY uploaded to a www.alsa-project.org site.
If you do not wish for this to occur, run the script with the --no-upload argument

Do you want to run this script? [y/n] : y
          Newer version detected: 0.4.58
To view the ChangeLog, please visit http://www.alsa-project.org/alsa-info.sh.changelog
ALSA-Info script has been updated. Please re-run it.
smile@smile-laptop:~$ ./alsa-info.sh
ALSA Information Script v 0.4.58
--------------------------------

This script visits the following commands/files to collect diagnostic
information about your ALSA installation and sound related hardware.

  dmesg
  lspci
  lsmod
  aplay
  amixer
  alsactl
  /proc/asound/
  /sys/class/sound/
  ~/.asoundrc (etc.)

See './alsa-info.sh --help' for command line options.

Automatically upload ALSA information to www.alsa-project.org? [y/N] : y
Uploading information to www.alsa-project.org ... Done!

Your ALSA information is located at http://www.alsa-project.org/db/?...

AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: smile 1954 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0x54400000 irq 16'
   Mixer name : 'Analog Devices AD1984A'
   Components : 'HDA:11d4194a,103c3613,00100400 HDA:11c11040,103c1378,00100200'
   Controls : 22
   Simple ctrls : 14
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027.1)
NonfreeKernelModules: fglrx wl
Package: alsa-base 1.0.20+dfsg-1ubuntu5
PackageArchitecture: all
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.UTF-8
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
Uname: Linux 2.6.31-14-generic x86_64
UserGroups: adm admin audio cdrom dialout lpadmin plugdev sambashare

Sorry,

I must correct my results!!! After installing "linux-backports-modules-alsa-karmic" (then reboot), the mic is working fine.
But the input level in Sound Preferences doesn't seems to work, for this I've thought a wrong result!

Many many thanks for all!!!!! I'll post this bug solution.

Regards

Hi LucaBalletta,

Please, if you are still having issues, test with the latest development release of Ubuntu. ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p alsa-base 505124

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds .

Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text.

Please let us know your results.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

Hi Brad,

I've done a recent Ubuntu update with alsa audio module included, 2-3 week ago.
Now it works properly. Only after stand by the mic is not working anymore.

Let me know if you need more details.

Thanks
Regards
Luca

Please obtain /proc/asound/card*/codec* contents from:
1) fresh boot with mic working
2) post-resume with mic "not working"