Messages in this thread | | | Date | Wed, 30 Jul 2003 17:34:16 +0200 | From | Takashi Iwai <> | Subject | Re: apm suspend breaks ALSA |
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At Wed, 30 Jul 2003 07:12:19 -0800, Christopher Swingley wrote: > > Greetings, > > I have a laptop with the es1978 ALSA sound driver built into the kernel. > When I go through a suspend / resume cycle using apm, the sound system > does not recover and loud static comes from the speakers instead of > music / voice / etc. On boot, ALSA works just fine. > > One solution appears to be building ALSA as modules and unloading / > reloading them, after a suspend / resume cycle. With 2.4.xx and the OSS > drivers built in, this wasn't an issue. > > Now that I've got them built as modules and have a 'sound' script in > /etc/apm/events.d/ that does the loading and unloading I'm happy, but I > figured I'd report the issue anyway.
as default, the power-management of es1968 is enabled only on a certain board, namely, ESS1978 _and_ (vendor == 0x1028 || vendor == 0x1179)
first, please check whether your pci id matches with it.
the behavior can be changed by a module option, use_pm, but it's missing in the kernel boot parameter (i'll fix this later). in that case, modify use_pm[] default value from 2 to 1, to force to use power-management.
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