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Wi-Fi LED is off when Wi-Fi is on

rated 0 times [ 0] [ 0] / answers: 1 / hits: 1537 / 2 Years ago, thu, december 23, 2021, 8:30:02

My Wi-Fi LED on Asus UX31E only turns on after I press Fn+F2, even though Wi-Fi turns on automatically on startup. So Wi-Fi LED is off when Wi-Fi is on.

/sys/class/leds/ath9k-phy0/brightness

Shows correct values. I've tried changing it to no avail.

Note: It might have to do with having blacklisted and killed bluetooth.

echo 'blacklist btusb' >> /etc/modprobe.d/blacklist.conf

echo 'rfkill block bluetooth' >> /etc/rc.local

In Grub

GRUB_CMDLINE_LINUX_DEFAULT="splash quiet acpi_osi='!Windows 2012'"

My device is

    02:00.0 Network controller [0280]: Qualcomm Atheros AR9485 Wireless Network Adapter [168c:0032] (rev 01)

How can I reverse the behavior?

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answered 2 Years ago termetalli · Accepted Answer

I've found out why after much teasting. Eventually I realized that the led indicator for Wi-Fi is dependent on Bluetooth. Bluetooth needs to be unblocked for the led to be on.

rfkill block bluetooth

This will turn the led indicator off, and vice versa. Doing the same for WLAN doesn't affect the led indicator. The issue was having bluetooth blocked on startup, which then caused WLAN and Bluetooth to have opposite status. Using the function key for Wi-Fi would flip the status of both Bluetooth and WLAN.

rfkill unblock bluetooth

Blacklisting, but unblocking Bluetooth on startup, was a desirable solution for me. The Unity indicator for Bluetooth does not show up regardless.