Messages in this thread | | | Subject | Re: Kernel error messages: leds fujitsu::radio_led: Setting an LED's brightness failed | From | Harvey <> | Date | Wed, 25 Oct 2017 15:17:56 +0200 |
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Am 25.10.2017 um 06:39 schrieb Michał Kępień: >>> - Investigating the E LED. This requires taking a look at the DSDT >>> dump from your laptop and searching for clues as to how this LED is >>> handled. I will be happy to do that, but again, no promises about >>> how much time it will take. (And given the nature of this task, I >>> cannot promise I will find anything reasonable at all. I also might >>> ask you to do some further experiments as I do not have an E751 >>> myself.) > > I feel stupid for only suggesting this now, but can this simply be the > eco LED? The DSDT dump from your laptop suggests so, as well as the > description of the E LED in the manual. Have you tried playing around > with /sys/class/leds/fujitsu::eco_led?
No, I haven't.
I tried to set brightness to 255 and back to 0:
[root@gruenix ~]# echo 255 >/sys/class/leds/fujitsu::eco_led/brightness
=> eco LED lights up!
[root@gruenix ~]# cat /sys/class/leds/fujitsu::eco_led/brightness
=> eco LED off!
Tadaaa!
So yes, this is the eco LED of my E751.
>> Don't forget to take a look at the I LED... > > I could not find anything in the DSDT dump from your laptop that would > suggest this LED can be controlled using ACPI. >
Greetings Harvey
-- I am root. If you see me laughing, you'd better have a backup!
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