Confirming on my T60 with 82801G as well, including PCM going missing intermittently. It works fine on -9, broken on -10. Unfortunately I am reluctant to go back to -9 for normal use because of Very Annoying Bug #129226 which is fixed in -10 !
One other detail: the "PC speaker" system bell noise is at normal levels, but I can hear nothing else thru speakers or headphones.
Confirming on my T60 with 82801G as well, including PCM going missing intermittently. It works fine on -9, broken on -10. Unfortunately I am reluctant to go back to -9 for normal use because of Very Annoying Bug #129226 which is fixed in -10 !
One other detail: the "PC speaker" system bell noise is at normal levels, but I can hear nothing else thru speakers or headphones.