#####Copied from askubuntu's Enabling mic mute button and light on Lenovo Thinkpad
There are two possible "hardware" indicators (to show that mute is on or off):
The Power button light (green) will blink to show when mute is on The Mic mute button light (orange) will be on or off to show mute status (just like in Windows)
Solution 2 requires a patched thinkpad_acpi
kernel module, and is only recommended for advanced users who know what they are doing. This is because the patch is not included by the thinkpad_acpi
developers by default, (See this discussion for more details).
###a. Determining the Mic-Mute hotkey code and Mic input device
- Open terminal with
Ctrl+Alt+T
- Run
acpi_listen
, and press the mute key - Note the result, which should be something like:
ibm/hotkey HKEY 00000080 0000101b
- Then run
amixer scontrols
, you should see one of the following in the output:
Simple mixer control 'Internal Mic',0
or
Simple mixer control 'Capture',0
Depending on what you see, "Internal Mic" or "Capture" is your input device.
###b. Create the Mic-Mute ACPI event handler
- Open terminal, type
gksudo gedit /etc/acpi/events/lenovo-mutemic
to open the editor. - In the editor, paste in the following, where the first line should be the code shown in the previous section by
acpi_listen
:
event=ibm/hotkey HKEY 00000080 0000101b
action=/etc/acpi/lenovo-mutemic.sh
- Save and exit the editor.
###c-1. Mic-Mute script with Power Button indicator
- Do this if you want an easy solution and do not want to use the patched kernel module (see C-2).
- Open terminal, type
gksudo gedit /etc/acpi/lenovo-mutemic.sh
- In the editor, paste:
#!/bin/bash
INPUT_DEVICE="'Internal Mic'"
YOUR_USERNAME="place_your_username_here"
if amixer sget $INPUT_DEVICE,0 | grep '\[on\]' ; then
amixer sset $INPUT_DEVICE,0 toggle
echo "0 blink" > /proc/acpi/ibm/led
su $YOUR_USERNAME -c 'DISPLAY=":0.0" notify-send -t 50 \
-i microphone-sensitivity-muted-symbolic "Mic MUTED"'
else
amixer sset $INPUT_DEVICE,0 toggle
su $YOUR_USERNAME -c 'DISPLAY=":0.0" notify-send -t 50 \
-i microphone-sensitivity-high-symbolic "Mic ON"'
echo "0 on" > /proc/acpi/ibm/led
fi
-
Replace value of INPUT_DEVICE variable with
Capture
if that is your input device name (leave all the ticks intact). -
Replace value of YOUR_USERNAME variable with the account name of the user you want to send notifications to
-
Save and exit the editor.
-
Now run the following (from the terminal):
sudo chmod +x /etc/acpi/lenovo-mutemic.sh
sudo service acpid restart
- Jump to the Testing section (d) to confirm that it works.
###c-2. Mic-mute with official Mic-mute Indicator Light
#####Setting up the script
- Please do not use this method if you are not familiar with the terminal/shell.
- This will require compiling a patched
thinkpad_acpi
module and has been verified to work with Ubuntu Precise 12.04 and Quantal 12.10, kernels 3.2.0-23 and 3.2.0-24 and 3.5.0-21. - Let's create the script first:
/etc/acpi/lenovo-mutemic.sh
should be as in section c-1, with the following additions: - Insert this line after the header (#!/bin/bash):
MICMUTE=/sys/devices/platform/thinkpad_acpi/leds/tpacpi::micmute/brightness
- After the first echo... line, insert:
echo 1 > $MICMUTE
- And after the second echo... line, insert:
echo 0 > $MICMUTE
-
You can find an example of what the full script should look like in this paste
-
Then:
sudo chmod +x /etc/acpi/lenovo-mutemic.sh
sudo service acpid restart
- Confirm that pressing the mute button results in a blinking power light; pressing again gives a steady power light.
#####Building, testing and installing the kernel module
- Install (or ensure) you have the headers and built tools for your currently running kernel with:
sudo apt-get install linux-headers-$(uname -r) build-essential
- Make a temporary directory and change to it:
mkdir ~/tpacpi && cd ~/tpacpi
- Download the source file
thinkpad_acpi.c
from the Ubuntu Kernel git repository:
wget -Othinkpad_acpi.c "http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-$(lsb_release -sc).git;\
a=blob_plain;f=drivers/platform/x86/thinkpad_acpi.c;hb=HEAD"
- Patch it with (copy and paste the full line):
sed -i -e 's/"tpacpi::thinkvantage",/"tpacpi::thinkvantage",\n\t"tpacpi::unknown_led4",\n\t"tpacpi::micmute",/g' -e 's/0x1081U/0x5081U/g' -e 's/0x1fffU/0x5fffU/g' thinkpad_acpi.c
In the same folder where thinkpad_acpi.c has been downloaded, you will need a "Makefile". You can download it directly from this Pastebin, using:
wget -OMakefile http://pastebin.com/raw.php?i=ybpnxeUT
- OR paste the below into a file called Makefile:
obj-m += thinkpad_acpi.o
all:
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
clean:
make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean
-
Now type make to create the module; you will see a thinkpad_acpi.ko file in the folder when done.
-
Test the patched module after loading it with:
sudo rmmod thinkpad_acpi && sudo insmod thinkpad_acpi.ko
-
Now confirm that pressing the mic button will turn the orange mic light on/off AND the power light blinking/steady.
-
If confirmed, do the following to replace your current
thinkpad_acpi
module:
TPDIR=/lib/modules/$(uname -r)/kernel/drivers/platform/x86
sudo mv $TPDIR/thinkpad_acpi.ko $TPDIR/thinkpad_acpi.ko.stock
sudo mv /where/you/built/it/tpacpi_micmute/thinkpad_acpi.ko $TPDIR/thinkpad_acpi.ko
- Comment out or delete the power led lines in lenovo-micmute.sh
###d. Testing
- Apart from your choice of indicator, you can also confirm mute via the following:
- Click on the volume icon on the top right, and sound settings at the bottom:
- Switch to the "Input" tab.
- Now have fun pressing the Mic Mute button, you should see it reflected in:
- The Mute checkbox in the window
- Notification bubbles (won't appear instantly if you press the Mic Mute more than once every few seconds!)
- Your chosen indicator: the blinking power button light or the built-in Mic Mute light.
Well done! Do you know if this solution works with Lenovo Thinkpad W510 ?