Sound connections acting weird

i'm using a dell studio 1537 and linuxmint 6
not sure what sound card i have. i lshw commanded it but i couldn't find.

the jacks are two haedphone and one microphone. the microphone i don't have so don't know if it works
one jack works but the speakers still pump out sound when the headphones are in.
when you plug in the other socket there's no sound out of anything.

lspci
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07)
00:01.0 PCI bridge: Intel Corporation Mobile 4 Series Chipset PCI Express Graphics Port (rev 07)
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03)
00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 4 (rev 03)
00:1c.5 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M LPC Interface Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation ICH9M/M-E SATA AHCI Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 03)
01:00.0 VGA compatible controller: ATI Technologies Inc Mobility Radeon HD 3400 Series
01:00.1 Audio device: ATI Technologies Inc RV620 Audio device [Radeon HD 34xx Series]
04:00.0 Network controller: Intel Corporation Wireless WiFi Link 5100
08:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5784M Gigabit Ethernet PCIe (rev 10)
09:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
09:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
09:01.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12)
09:01.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
09:01.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev ff)

lsusb
Bus 008 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 003: ID 0c45:63fa Microdia
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 002: ID 12d1:1003 Huawei Technologies Co., Ltd. E220 HSDPA Modem / E270 HSDPA/HSUPA Modem
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 003: ID 08ff:2810 AuthenTec, Inc.
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

I expect the out of the two headphone sockets, one is line in. The working headphone socket is probably driven by the Intel HDA.

00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)

If you go into the bios you shold be able to turn on the jack detection, that is the speakers silence (mute) when you plug in headphones.

I expect the other audio device - AMD based in the 3450? provides the sound via the hdmi output.

Quote:

Originally Posted by blinky

I expect the out of the two headphone sockets, one is line in. The working headphone socket is probably driven by the Intel HDA.

00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)

If you go into the bios you shold be able to turn on the jack detection, that is the speakers silence (mute) when you plug in headphones.

I expect the other audio device - AMD based in the 3450? provides the sound via the hdmi output.

hmmm... not so.
there is no entry into the bios for jack detection.

play with alsa settings

Hi,

I've got a similar laptop, and similar "symptoms". I'm using Ubuntu intrepid, which uses alsa 1.0.17.
The "trick" in getting audio in both headphone outputs is turning on the headphone in the volume settings. (using gnome-volume-control, check every box in "preferences" for the "HDA Intel (alsa mixer)", then you should have a slider for Master, Front, Headphone, PCM en Surround. You may also need to play with the switches and options.