I'll attempt to describe the patterns and symptoms I am noticing and with a subsequent email attach ScreenShot files to support those observations. With this latest round of testing the Ubuntu 15.10 daily drops, most of the distributions are behaving correctly in that Volume Slider does control volume levels correctly adjusting channels Master and PCM. alsamixer reports Card: Intel 82801AA-ICH Chip: Sigmatel STAC9700,83,84 The two distributions I am having problems with is. Distribution: Lubuntu 15.10 *Volume Slider Controls Master Only and Not PCM.* alsamixer reports same Card and Chip information as above however the Volume Slider Distribution: Mate 15.10(Had Not Previously tried this Distribution) Volume Slider Only Controlling PCM and Not Master This Symptom was common in the previous testing when more distributions were effected however I am not sure that the Chip identified below was the same in those past tests. alsamixer reports Card: Intel 82801AA-ICH Chip: *Analog Devices AD1980* On my next update, I will attach all of the Screenshots and Vbox Logfiles for the failing machines. On Sat, Aug 29, 2015 at 2:55 AM, Raymond