Comment 10 for bug 1599599

First, Thomas, I apologize for sounding irritated above, but if you saw the volume of comments I've seen addressing the wrong (external/soundcard) speaker for this problem you would likely agree.

Joseph, I changed the tag to read 'kernel-bug-exists-upstream' as the problem persists with v4.7-rc6 mainline.

Note the output for $ modeinfo pcspkr

filename: /lib/modules/4.7.0-040700rc6-generic/kernel/drivers/input/misc/pcspkr.ko
alias: platform:pcspkr
license: GPL
description: PC Speaker beeper driver
author: Vojtech Pavlik <email address hidden>
depends:
intree: Y
vermagic: 4.7.0-040700rc6-generic SMP mod_unload modversions

Also, as my previous comment pointed out in the changelog for 4.4.0-28, I think this bug #582350 is the culprit.