Same problem affects me. I have ASUS U46E running Ubuntu 12.04 LTS with
following sound driver
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family
High Definition Audio Controller (rev 05)
Subsystem: ASUSTeK Computer Inc. Device 1bc3
Flags: bus master, fast devsel, latency 0, IRQ 22
Memory at dfc00000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [130] Root Complex Link
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel
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https://bugs.launchpad.net/bugs/995684
Title:
Switching problem between headphone speaker and microphone to laptop
built in speakers and front mic
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