I'm experiencing the same issue:
Dell XPS 13 Developer Edition
BIOS v1.3.2
Ubuntu 16.04
spike@blackhole:~$ uname -a Linux blackhole 4.4.0-64-generic #85-Ubuntu SMP Mon Feb 20 11:50:30 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
spike@blackhole:~$ apt search alsa-base Sorting... Done Full Text Search... Done alsa-base/xenial,xenial,now 1.0.25+dfsg-0ubuntu5 all [installed] ALSA driver configuration files
I'm experiencing the same issue:
Dell XPS 13 Developer Edition
BIOS v1.3.2
Ubuntu 16.04
spike@blackhole:~$ uname -a
Linux blackhole 4.4.0-64-generic #85-Ubuntu SMP Mon Feb 20 11:50:30 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
spike@blackhole:~$ apt search alsa-base xenial, xenial, now 1.0.25+ dfsg-0ubuntu5 all [installed]
Sorting... Done
Full Text Search... Done
alsa-base/
ALSA driver configuration files