Public bug reported:
Using Kubuntu 15.10 my sound system works well on my Thinkpad L520.
After upgrading to 16.04 the sound device isn't recognized any longer.
"aplay -l" reports that there is no sound device. lspci reports for the
type of the device:
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset
Family High Definition Audio Controller (rev 04)
The following modules are loaded:
lsmod|grep snd
snd_hda_codec_realtek 81920 2
snd_hda_codec_generic 77824 1 snd_hda_codec_realtek
snd_hda_intel 36864 0
snd_hda_codec 135168 3
snd_hda_codec_realtek,snd_hda_codec_generic,snd_hda_intel
snd_hda_core 73728 4
snd_hda_codec_realtek,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
snd_hwdep 16384 1 snd_hda_codec
snd_pcm 106496 3 snd_hda_codec,snd_hda_intel,snd_hda_core
snd_seq_midi 16384 0
snd_seq_midi_event 16384 1 snd_seq_midi
snd_rawmidi 32768 1 snd_seq_midi
snd_seq 69632 2 snd_seq_midi_event,snd_seq_midi
snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer 32768 2 snd_pcm,snd_seq
snd 81920 10
snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device
soundcore 16384 1 snd
lsb_release -rd
Description: Ubuntu 16.04 LTS
Release: 16.04
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1591485
Title:
after update from kubuntu 15.10 to 16.04 soundcard isn't recognized
any longer
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