Lenovo Fn+F4 MicMute binding fix - Revision history

Garak at 18:37, 9 May 2025

2025-05-09T18:37:08Z

Garak: better instruction wording

2025-05-09T18:36:37Z

better instruction wording

Garak: Update - get card ID

2025-05-09T18:35:03Z

Update - get card ID

Garak: Add Fn + F4 article

2025-05-05T14:34:38Z

Add Fn + F4 article

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Start ACPI service if not running:
/etc/init.d/acpid start
Run <code>acpi_listen</code> and hit the key kombination. Something like this should emit:<syntaxhighlight lang="sh">
$ acpi_listen
button/micmute MICMUTE 00000080 00000000 K
</syntaxhighlight>Create a file <code>/etc/acpi/events/thinkpad-micmute</code> and put this snippet into it (update <code>event</code> based on previous command output):<syntaxhighlight lang="sh">
event=button/micmute MICMUTE 00000080 00000000 K
action=/etc/acpi/thinkpad-micmute.sh
</syntaxhighlight>Create a file <code>/etc/acpi/thinkpad-micmute.sh</code> and make it executable<syntaxhighlight lang="sh">
$ touch /etc/acpi/thinkpad-micmute.sh && chmod a+x /etc/acpi/thinkpad-micmute.sh
</syntaxhighlight>Open it and put the following snippet into it:<syntaxhighlight lang="sh">
/usr/bin/amixer sset Capture toggle
</syntaxhighlight>Restart acpid service<syntaxhighlight lang="sh">
$ /etc/init.d/acpid start
</syntaxhighlight>also make sure it is being started after boot<syntaxhighlight lang="sh">
systemctl enable acpid.socket
</syntaxhighlight>

@@ Line 19: / Line 19: @@
                        ThinkPad Console Audio Control at EC reg 0x30,
 </syntaxhighlight>From the example above, the card to use is card <code>#1</code> (using <code>1</code> in the examples in the text later - update based on your setup). In case the card is not the default one (= the first one when sorted by ID ascendingly) card ID needs to be specified explicitly. If it's the default one, the <code>-c1</code> switch can be omitted.
 Open file <code>/etc/acpi/thinkpad-micmute.sh</code> and put the following snippet into it:<syntaxhighlight lang="sh">

@@ Line 20: / Line 20: @@
 </syntaxhighlight>From the example above, the card to use is card <code>#1</code> (using <code>1</code> in the examples in the text later - update based on your setup). In case the card is not the default one (= the first one when sorted by ID ascendingly) card ID needs to be specified explicitly. If it's the default one, the <code>-c1</code> switch can be omitted.
-Open it and put the following snippet into it:<syntaxhighlight lang="sh">
+Open file <code>/etc/acpi/thinkpad-micmute.sh</code> and put the following snippet into it:<syntaxhighlight lang="sh">
 /usr/bin/amixer -c1 sset Capture toggle
 </syntaxhighlight>Restart acpid service<syntaxhighlight lang="sh">

@@ Line 1: / Line 1: @@
-Start ACPI service if not running:
+Start ACPI service if not running:<syntaxhighlight lang="sh">
- /etc/init.d/acpid start
+$ /etc/init.d/acpid start
 Run <code>acpi_listen</code> and hit the key kombination. Something like this should emit:<syntaxhighlight lang="sh">
 $ acpi_listen
@@ Line 9: / Line 10: @@
 </syntaxhighlight>Create a file <code>/etc/acpi/thinkpad-micmute.sh</code> and make it executable<syntaxhighlight lang="sh">
 $ touch /etc/acpi/thinkpad-micmute.sh && chmod a+x /etc/acpi/thinkpad-micmute.sh
-</syntaxhighlight>Open it and put the following snippet into it:<syntaxhighlight lang="sh">
+</syntaxhighlight>Find out the card and control to switch upon:<syntaxhighlight lang="sh">
-/usr/bin/amixer sset Capture toggle
+$ cat /proc/asound/cards
 </syntaxhighlight>Restart acpid service<syntaxhighlight lang="sh">
-$ /etc/init.d/acpid start
+$ /etc/init.d/acpid restart
 </syntaxhighlight>also make sure it is being started after boot<syntaxhighlight lang="sh">
-systemctl enable acpid.socket
+$ systemctl enable acpid
 </syntaxhighlight>