Ubuntu
alsa-driver package

Pop noise on HP 2620 notebook

Asked by cirobr

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

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Status:
Solved
For:
Ubuntu alsa-driver Edit question
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Solved by:
Colin Ian King
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Revision history for this message
cirobr (ciro-rosa) said : 		#1

Just to be precise: notebook model HP DV2620US

Revision history for this message
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.

Revision history for this message
cirobr (ciro-rosa) said : 		#3

Thanks Colin King, that solved my question.