Comment 3 for bug 296251

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