Public bug reported:

Dear Sir, 
If this bug has been reported, I am sorry as I do not know how to confirm that.

The following is all the information about my Lenovo G470 that I can
hopefully get.  I am a non-IT person, and I need some help with my
built-in microphone which is not functioning. Frankly, I have searched
and to no avail.  I can see the VU band moving in my Pulse Audio Volume
Control, when I tried to use the mic, but after recording, there is no
sound reproduced; I have tried the inverted mic work about, to no avail.
I have use VLC, Banshee and other players. My speakers should be okay
because I can listen to online radio and I can hear my friend's Skype
but cannot use my mic.

I also did an Alsa info search and the log is attached here:
http://www.alsa-project.org/db/?f=400190cf9abc3f87d9de030e7ce22664c1c69a89

I will be grateful, if you could email me at: ccw_...@yahoo.com, if you
need further information, or if I have not fulfill certain task due to
my ignorance. Thank you in appreciation.

System information report, generated by Sysinfo: 6/29/2012 2:43:07 PM
http://sourceforge.net/projects/gsysinfo

SYSTEM INFORMATION
        Running Ubuntu Linux, the Ubuntu 11.10 (oneiric) release.
        GNOME: 2.32.1 (Ubuntu 2011-04-14)
        Kernel version: 3.0.0-22-generic (#36-Ubuntu SMP Tue Jun 12 17:37:42 
UTC 2012)
        GCC: 4.6.1 (x86_64-linux-gnu)
        Xorg: 1.10.4 (23 May 2012  07:44:07AM) (23 May 2012  07:44:07AM)
        Hostname: Lenovo-G470
        Uptime: 0 days 1 h 29 min

CPU INFORMATION
        GenuineIntel, Intel(R) Pentium(R) CPU B950 @ 2.10GHz
        Number of CPUs: 2
        CPU clock currently at 2100.000 MHz with 2048 KB cache
        Numbering: family(6) model(42) stepping(7)
        Bogomips: 4190.51
        Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov 
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm 
constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc 
aperfmperf pni pclmulqdq dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm 
sse4_1 sse4_2 x2apic popcnt xsave lahf_lm arat epb xsaveopt pln pts dts

MEMORY INFORMATION
        Total memory: 7947 MB
        Total swap: 0 MB

STORAGE INFORMATION
        SCSI device -  scsi0
                Vendor:  ATA      
                Model:  HITACHI HTS54755 
        SCSI device -  scsi2
                Vendor:  MATSHITA 
                Model:  DVD-RAM UJ8B1AS  
        SCSI device -  scsi6
                Vendor:  Generic- 
                Model:  xD/SD/M.S.       

HARDWARE INFORMATION
MOTHERBOARD
        Host bridge
                Intel Corporation 2nd Generation Core Processor Family DRAM 
Controller (rev 09)
                Subsystem: Lenovo Device 3975
        PCI bridge(s)
                Intel Corporation Xeon E3-1200/2nd Generation Core Processor 
Family PCI Express Root Port (rev 09) (prog-if 00 [Normal decode])
                Intel Corporation 6 Series/C200 Series Chipset Family PCI 
Express Root Port 1 (rev b5) (prog-if 00 [Normal decode])
                Intel Corporation 6 Series/C200 Series Chipset Family PCI 
Express Root Port 2 (rev b5) (prog-if 00 [Normal decode])
        USB controller(s)
                Intel Corporation 6 Series/C200 Series Chipset Family USB 
Enhanced Host Controller #2 (rev 05) (prog-if 20 [EHCI])
                Intel Corporation 6 Series/C200 Series Chipset Family USB 
Enhanced Host Controller #1 (rev 05) (prog-if 20 [EHCI])
        ISA bridge
                Intel Corporation HM65 Express Chipset Family LPC Controller 
(rev 05)
                Subsystem: Lenovo Device 3975

GRAPHIC CARD
        VGA controller
                ATI Technologies Inc Robson CE [AMD Radeon HD 6300 Series] 
(prog-if 00 [VGA controller])
                Subsystem: Lenovo Device 397a

SOUND CARD
        Multimedia controller
                Intel Corporation 6 Series/C200 Series Chipset Family High 
Definition Audio Controller (rev 05)
                Subsystem: Lenovo Device 3975

NETWORK
        Network controller
                Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN 
Controller (rev 01)
                Subsystem: Broadcom Corporation Device 051b
        Ethernet controller
                Atheros Communications AR8152 v2.0 Fast Ethernet (rev c1)
                Subsystem: Lenovo Device 3979

** Affects: ubuntu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1019155

Title:
  internal microphone not working in Lenovo G470

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