Acer Aspire 2920: microphone with alsa

PART 1

From: http://ubuntuforums.org/showthread.php?p=4988340

I have written the following line in both files:

• "/etc/modprobe.d/snd-hda-intel.modprobe" (this file must be created)

• "/etc/modprobe.d/alsa-base" (at the bottom in the last line)

Code:

options snd-hda-intel model=acer position_fix=0 enable=yes

PART 2

From: http://www.imhorst.net/ubuntu-on-an-acer-aspire-2920

1) execute the following commands:

    sudo apt-get install module-assistant
    sudo m-a update
    sudo m-a prepare
    sudo m-a a-i alsa
    sudo alsa force-unload
    sudo depmod -ae
    sudo modprobe snd-hda-intel

2) execute

    alsamixer -c 0 -V all

and enable Internal at the last control (Input Source).
that's all... and ... incredibly... it works!!!

monitor too much bright?

It's the case of my glossy display (acer 2920) so I discovered that, under ubuntu, a gamma set to 0.6 it surely better:

1. how to find your preferred gamma settings:
   xgamma -gamma .6
   this will set both colors (rgb) to 0.6 value
2. alternatively it is possible to change each color as in the following example:
   xgamma -rgamma .6 -ggamma .8 -bgamma .6
3. Once discovered the right equilibrium among gammaa values, if you have the superuser rights you can set the xorg configuration in this manner:
   "sudo gedit /etc/X11/xorg.conf"
   modify the monitor section as follows, with your gamma values:
   
   

   Section "Monitor"
     Identifier      "Configured Monitor"
     Gamma           1.03 0.86 0.67
   EndSection
   

   
   
4. If you are not super user enabled???
   
   Open: System->Preferences->Sessions
   Press: Add
   
   Name: Gamma Settings
   Command: xgamma -gamma .6
   Description: optional
   
   

iwl3945 wifi working on unbuntu hardy

I have an acer 2920 with T7500 processor (dual core 2.2ghz)...

after a lot of jumps around several forums I have collapsed here the working solution:

From here:
install backports for drivers

sudo apt-get install linux-backports-modules-hardy

create as super user:

sudo gedit /etc/modprobe.d/blacklist-ipw3945

write this line inside:

blacklist ipw3945

--- restart ---

to test if it is working try with:

sudo iwlist wlan0 scan

probably it is not enough, if you have errors during scanning, you have to do:

sudo gedit /etc/modprobe.d/iwl3945

write inside it the following lines:

alias wlan0 iwl3945
options iwl3945 disable_hw_scan=1

--- restart --- again