Yes I have run through the DebuggingSoundProblems page without any luck.
Here are the results from "sudo lspci -v":
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition
Audio Controller (rev 02)
Subsystem: LG Electronics, Inc. Device 005f
Flags: bus master, fast devsel, latency 0, IRQ 22
Memory at d8500000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0
Enable-
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel <?>
Capabilities: [130] Root Complex Link <?>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
I guess there are a few parts to this bug - one is that the device is
incorrectly detected (have to manually set it to use 6stack-dig) and the
other is the crackling when using the built in speakers on the laptop.
Thanks
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Sound intermittently works / crackles & fades out
https://bugs.launchpad.net/bugs/296251
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