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Kernel 2.6.30 and the PC speaker


I installed stock 2.6.30 from unstable on my Thinkpad R61i and it seems 
like the PC speaker (the system beep) is handled a bit differently now:

- the pitch is much higher (quite annoying)
- some events don't generate a beep anymore (like the 
  plugging/unplugging of the power cord)

Everything goes back to normal if I boot 2.6.29 and also the beep works 
during POST, at the grub menu and the first few seconds of the boot.  
This seems to be related to this message: 

Jun 25 11:59:57 think kernel: [    6.936488] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input9

which doesn't show up at all if I boot 2.6.29. Otherwise the "normal" 
sound works fine. I also tried various combinations of removing/adding 
the pcspkr module and loading snd-hda-intel with "model=thinkpad", but 
there is no change. BTW, the "beep" works even if I unload pcspkr.

Do you think this is a bug or is there some documentation on how to turn 
on the old behaviour?

If you can't explain it simply, you don't understand it well enough.
(Albert Einstein)

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