Sound goes on and off again on my HP laptop

[Rover Foggarty]

Hi there, ofcourse i first searched on the forum, but with my chipset in 2009 there was no post pointing to my prob...
I have a hp Pavillion dv9000 witch worked fine with Jaunty.
I upgraded and now the soundsystem goes off after a few seconds.
It goes on again before producing any sound so that works but it makes a "plop" when going online.
And if i have a headphone or external speakers connected it goes on and off in a loop, making me crazy..
My workaround, i think a bit dirty, is starting Virtualbox, that keeps the soundsystem occupied so that it stays on.
So, summary, sound works, but keeps on going offline.
To be sure it wasn't due to the upgrade i booted into a fresh non beta karmic cd and experienced the same.
now follows a report of the hardware i made booting into BartPE with Everest. (Yeah i know, lame i dont know another way)

Motherboard:
CPU Type Mobile DualCore Intel Core 2 Duo T5500, 1666 MHz (10 x 167)
Motherboard name Hewlett-Packard HP Pavilion dv9000 (RP622EA#ABH)
Motherboard Chipset Mobile Intel Calistoga-PM i945PM
System memory 2048 MB (DDR2-667 DDR2 SDRAM)
DIMM1: Hynix HYMP512S64BP8-Y5 1 GB DDR2-667 DDR2 SDRAM (5-5-5-15 @ 333 Mhz) (4-4-4-12 @ 266 Mhz) (3-3-3-9 @ 200 Mhz)
DIMM3: Hynix HYMP512S64BP8-Y5 1 GB DDR2-667 DDR2 SDRAM (5-5-5-15 @ 333 Mhz) (4-4-4-12 @ 266 Mhz) (3-3-3-9 @ 200 Mhz)
BIOS Type Phoenix (10/26/06)

Screen:
Video card nVIDIA GeForce Go 7600
3D Acceleration nVIDIA GeForce Go 7600

Multimedia:
Soundcard Conexant Cx20549 @ Intel 82801GBM ICH7-M - High Definition Audio Controller [B-0]

Storage:
Harde schijf USB DISK 2.0 USB Device (3 GB, USB)
Optische Station Optiarc DVD RW AD-7593A

FireWire controller Ricoh RL5C832 IEEE1394 Controller (PHY: Ricoh RL5C832)
USB1 controller Intel 82801GBM ICH7-M - USB Universal Host Controller [B-0]
USB1 controller Intel 82801GBM ICH7-M - USB Universal Host Controller [B-0]
USB1 controller Intel 82801GBM ICH7-M - USB Universal Host Controller [B-0]
USB1 controller Intel 82801GBM ICH7-M - USB Universal Host Controller [B-0]
USB2 controller Intel 82801GBM ICH7-M - Enhanced USB2 Controller [B-0]

DMI:
DMI BIOS Supplieer Hewlett-Packard
DMI BIOS Version F.06
DMI System Manufactorer Hewlett-Packard
DMI System Product HP Pavilion dv9000 (RP622EA#ABH)
DMI system Version Rev 1
DMI System Serialnr CNF6440V8N
DMI System UUID 434E4636-34343056-384E0016-36A221E1
DMI Moederbordmanufactorer Quanta
DMI Moederbordproduct 30BD
DMI Moederbordversie 66.21
DMI chassistype Notebook

[jayhawk]

Re: Sound goes on and off again on my HP laptop

There is a new powersaving mode that has been added for the sound card. You should be able to disable it by editing /etc/modprobe.d/alsa-base.conf

kdesudo kate /etc/modprobe.d/alsa-base.conf

and comment out the following line:

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

so that it looks like:

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

Once you restart, it should no longer produce the popping noise.

[tawee2009]

Re: Sound goes on and off again on my HP laptop

I've problem not quite the same as him but no sound, actually. I tried changing the alsa.conf file and it's work !!
Sound comes back again. My laptop is acer aspire 3810TZ. One thing I'm being worried is the power saving feature was disable, looking for other code.

[Rover Foggarty]

Re: Sound goes on and off again on my HP laptop

Jayhawk,
> There is a new powersaving mode that has been added for the sound card. You should be able to disable it by editing /etc/modprobe.d/alsa-base.conf

That worked!! Thank you so much!