mute laptop speakers with Intel HDA

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Greetings!

I've a very annoying problem with ALSA on my new Toshiba P205: I can not
mute speakers when headphones are connected via a jack. There is an
option in alsamixer called 'headphone' that just enables the sound in
the jack, but does NOT mute the speakers.

Can anybody help? lsmod and lspci output attached.
Ubuntu Gusty tribe 2, kernel 2.6.22, ALSA 1.0.14

Other 'strange' things:
1) option 'caller id'. No idea what it is.
2) option 'off-hook'. No idea what it is.
3) channel called 'speakers' does not control sound level or mute the
speakers!

Thanks!!!

-- 
Michael Baranov

Module                  Size  Used by
i915                   25472  2 
drm                    83348  3 i915
acpi_cpufreq           10568  1 
cpufreq_stats           7232  0 
cpufreq_ondemand        9228  1 
freq_table              5792  3 acpi_cpufreq,cpufreq_stats,cpufreq_ondemand
cpufreq_userspace       5280  0 
cpufreq_powersave       2688  0 
cpufreq_conservative     8072  0 
container               5504  0 
video                  17544  0 
sbs                    19592  0 
button                  8848  0 
asus_acpi              17308  0 
dock                   10528  0 
battery                11012  0 
ac                      6148  0 
sbp2                   24200  0 
parport_pc             37412  0 
lp                     12580  0 
parport                37448  2 parport_pc,lp
fuse                   47124  0 
af_packet              24840  4 
snd_hda_intel         256024  1 
pcmcia                 41388  0 
snd_pcm_oss            44672  0 
snd_mixer_oss          17664  1 snd_pcm_oss
snd_pcm                80388  2 snd_hda_intel,snd_pcm_oss
snd_seq_dummy           4740  0 
snd_seq_oss            33152  0 
snd_seq_midi            9600  0 
joydev                 11328  0 
snd_rawmidi            25728  1 snd_seq_midi
wlan_scan_sta          15104  1 
snd_seq_midi_event      8448  2 snd_seq_oss,snd_seq_midi
uvcvideo               43012  0 
ath_rate_sample        14208  1 
tifm_7xx1               8576  0 
iTCO_wdt               11940  0 
videodev               29312  1 uvcvideo
v4l1_compat            15364  2 uvcvideo,videodev
v4l2_common            18432  2 uvcvideo,videodev
iTCO_vendor_support     4868  1 iTCO_wdt
tifm_core              11268  1 tifm_7xx1
snd_seq                53232  6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
yenta_socket           27532  1 
sdhci                  18700  0 
mmc_core               28420  1 sdhci
ath_pci                97824  0 
wlan                  205252  4 wlan_scan_sta,ath_rate_sample,ath_pci
snd_timer              24324  2 snd_pcm,snd_seq
snd_seq_device          9228  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
rsrc_nonstatic         14080  1 yenta_socket
ath_hal               192720  3 ath_rate_sample,ath_pci
pcmcia_core            40980  3 pcmcia,yenta_socket,rsrc_nonstatic
serio_raw               8068  0 
psmouse                39952  0 
snd                    54660  11 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore               8800  1 snd
snd_page_alloc         10888  2 snd_hda_intel,snd_pcm
intel_agp              25364  1 
agpgart                35016  3 drm,intel_agp
shpchp                 34580  0 
pci_hotplug            32704  1 shpchp
evdev                  11136  5 
ipv6                  273892  16 
ext3                  133768  1 
jbd                    60456  1 ext3
mbcache                 9732  1 ext3
sg                     36764  0 
sr_mod                 17828  0 
cdrom                  37536  1 sr_mod
sd_mod                 30336  3 
usbhid                 29536  0 
hid                    28928  1 usbhid
ata_piix               15748  2 
ohci1394               36528  0 
ehci_hcd               36108  0 
ieee1394               96312  2 sbp2,ohci1394
ata_generic             8452  0 
libata                127856  2 ata_piix,ata_generic
scsi_mod              147084  5 sbp2,sg,sr_mod,sd_mod,libata
uhci_hcd               26640  0 
r8169                  32392  0 
usbcore               137480  5 uvcvideo,usbhid,ehci_hcd,uhci_hcd
thermal                14344  0 
processor              31944  2 acpi_cpufreq,thermal
fan                     5764  0 
capability              5896  0 
commoncap               8320  1 capability
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS/940GML and 945GT Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller (rev 03)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 02)
00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) Serial ATA Storage Controller IDE (rev 02)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02)
04:00.0 Ethernet controller: Atheros Communications, Inc. Unknown device 001c (rev 01)
05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E PCI Express Fast Ethernet controller (rev 01)
06:04.0 CardBus bridge: Texas Instruments PCIxx12 Cardbus Controller
06:04.1 FireWire (IEEE 1394): Texas Instruments PCIxx12 OHCI Compliant IEEE 1394 Host Controller
06:04.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD)
06:04.3 Generic system peripheral [0805]: Texas Instruments PCIxx12 SDA Standard Compliant SD Host Controller
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