About speakers, after installing linux-backports-modules-alsa-lucid-generic the mute LED now works.
This laptop have 2 speakers + 1 subwoffer, the subwoffer don't work.
About point high pitch noise and lower screen brightness during boot, I tried linux kernel generic 2.6.35-14.20 and the problems stay.
In attachment the dmesg with kernel 2.6.32-24 and 2.6.35-14.20.
More tests.
About speakers, after installing linux-backports -modules- alsa-lucid- generic the mute LED now works.
This laptop have 2 speakers + 1 subwoffer, the subwoffer don't work.
About point high pitch noise and lower screen brightness during boot, I tried linux kernel generic 2.6.35-14.20 and the problems stay.
In attachment the dmesg with kernel 2.6.32-24 and 2.6.35-14.20.