[alsa-devel] IBM X41 laptop, no headphone detection after s2ram cycle

Dmitry E. Mikhailov sexandvodka at gmail.com
Wed Jun 25 18:06:13 CEST 2008


For about a year I got a following problem.

After s2ram cycle I got only sound from internal speaker, even if the 
headphones are plugged in.

s2disk (hibernate) restores the functionality.

Sometimes (rare!) I got the functionality after s2ram. If I repeat s2ram, it 
stops working again.

I compared ALSA registers before and after: they are all the same.

It was Ok when I got Fedora7 with kernel 2.6.18 installed. But even if I 
restore 2.6.18 now, things don't go right.

Before the Switch from 'another proprietary OS' it was also Ok.

With Fedora9 I got a famous 'alsasound' service. It's restart doesn't help. 
Reloading modules doesn't help. Unload prior to s2ram and load after it 
doesn't help. Rolling ALSA back doesn't seem to help but I 
could do it wrong way. 
Tested kernels: 2.6.18.something, 2.6.19, 2.6.20,, 
2.6.22, 2.6.22.something, 2.6.23,,,, 2.6.25,, (current).

Or it's a hardware failure? As a last resort I'll reinstall /\/\$ \/\/in to 

	Best regards, Dmitry Mikhailov

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