Pop noise on HP 2620 notebook

Asked by cirobr on 2009-11-17

When installing Ubuntu Karmic on an HP 2620 US notebook, a pop noise similar to DC transients on loudspeakers can be heard under the following conditions:
* Boot up (at several different stages)
* At the start of playback of audio/video files

Same computer worked perfectly on all previous Ubuntu versions.

This behaviour is NOT observed on other notebooks (different HP models and different brands).

Thanks for analyzing and fixing the problem.

Question information

Language:
English Edit question
Status:
Solved
For:
Ubuntu alsa-driver Edit question
Assignee:
No assignee Edit question
Solved by:
Colin Ian King
Solved:
2009-11-18
Last query:
2009-11-18
Last reply:
2009-11-17
cirobr (ciro-rosa) said : #1

Just to be precise: notebook model HP DV2620US

Best Colin Ian King (colin-king) said : #2

This is most probably because of the power saving options to turn on/off the audio hardware. A workaround to disable this is to change the last line of /etc/modprobe.d/alsa-base.conf from:

options snd-hda-intel power_save=10 power_save_controller=N

to:

options snd-hda-intel power_save=0

you will need to edit this file using sudo, e.g. sudo gedit /etc/modprobe.d/alsa-base.conf

Hope that helps.

cirobr (ciro-rosa) said : #3

Thanks Colin King, that solved my question.