| View previous topic :: View next topic |
| Author |
Message |
albright
Advocate
Joined: 16 Nov 2003
Posts: 2588
Location: Near Toronto
|
 Posted: Sun May 22, 2016 3:26 pm Post subject: thinkpad x1 carbon LEDs |
 |
|
I wonder if anyone has insight into this (tiny) issue
My new x1 carbon (4th generation) has an audio mute LED and
a microphone mute LED on the keyboard (Fn-F1 and Fn-F4).
They don't light up in gentoo (the audio mute key works to mute
sound; the mic mute key does nothing).
In ubuntu (I have a triple boot gentoo / ubuntu / windows) the LEDs
work.
Curiously, I found a patch for thinkpad_acpi.c which fixes the mic mute LED
in gentoo; it is simply a substitution:
| Code: | | 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 |
Once I recompiled the thinkpad_acpi module the mic mute LED could be controlled (via a acpi event).
But the audio mute LED remains non-functional in gentoo ... and I can't find any such patch
But perhaps someone here knows more about this ... (e.g. how to find the magic numbers as in the above
that control the audio mute button)
_________________
.... there is nothing - absolutely nothing - half so much worth
doing as simply messing about with Linux ...
(apologies to Kenneth Graeme) |
|
| Back to top |
|
 |
charles17
Advocate
Joined: 02 Mar 2008
Posts: 3685
|
| Posted: Mon May 23, 2016 5:53 am Post subject: Re: thinkpad x1 carbon LEDs |
|
|
| albright wrote: | In ubuntu (I have a triple boot gentoo / ubuntu / windows) the LEDs
work. |
Do they work in http://sysresccd.org? You know, it's based on Gentoo. |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
|
Kernel & Hardware
