Today, I have finally been unable to bear the problem of 7.10 plug-in headphones in my notebook without sound. I checked the problem of the Alsa driver on Acer for a long time, it took more than an hour to get an education network source directly increased to 8.04. In addition to starting to encounter a small problem, the upgrade process was unexpectedly smooth.
After the upgrade, the headset has a sound, but the sound is played together with the headset, but the volume can be adjusted separately, basically solved. The screen brightness adjustment is also normal, and it also works for my poor ATI graphics card and bcm43 wireless Nic, visual effects and network-manager.
It is really easy to use Linux only when the machine is used up... Otherwise, the driver is a big problem ~
By the way, my model is "Acer travelmate 4520", and the comrade from the second half of the year from "Acer" is about to increase by 8.04 ~ This version is lts and will not be changed unless otherwise specified.