On 7/24/2013 1:57 PM, David Henningsson wrote:
On 07/24/2013 01:33 PM, Wang, Xingchao wrote:
Yes, I agree. I'm debugging this issue on Ubuntu, not sure it happens
on other distribution too.
If it's related to Ubuntu, maybe need check Ubuntu power policy. Does
anyone know the Ubuntu power-policy on laptop?
i.e. when charger connected, will Ubuntu make decision to disable
power-save feature for audio subsystem?
I'm not a power management expert, but I got a pointer from my team
mate to pm-utils:
http://cgit.freedesktop.org/pm-utils/tree/pm/power.d/intel-audio-powersave
If I understand correctly, The scripts in power.d are executed when
battery / AC-power is changed.
To me, this sounds like a user space issue. It requested power on and
the kernel delivered.
Trying to modify the kernel to work around that would be insane.
Thanks,
Rafael
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