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‎01-27-2021 10:39 AM

HP Recommended
Product: HP 14s-dq1301ng
Operating System: Linux

It seems that this behavior is present on several HP laptops. Here is what happens:
after the laptop has been suspended, the wifi-6 intel card AX201 is hard blocked by an RF_KILL signal to the iwlwifi driver. This is what dmesg says:

iwlwifi 0000:00:14.3: reporting RF_KILL (radio disabled)
iwlwifi 0000:00:14.3: RF_KILL bit toggled to disable radio.

 

'rfkill list' displays then


1: phy0: Wireless LAN
       Soft blocked: no
       Hard blocked: yes

Consequently, toggling the "airplane" function key only toggles the "Soft blocked" state, but not the hard blocked state as the latter is normally meant to be set by a hardware key, which the  HP 14s-dq1301ng doesn't have. This behavior happens under various kernels (tried 5.8, 5.9, and 5.10) with ubuntu 20.10. Proposed solutions like blacklisting other modules etc. had no effect. Most people said that it worked for them after restoring the default settings in their BIOS, but this did not work either with the latest BIOS (F13A). There is also no dedicated setting for the wireless LAN card in the BIOS that could potentially change the behavior. As far as I investigated the issue, the iwlwifi driver gets the RF_KILL interrupt by the system, but there is no way to revert the RF_KILL state by software. I fear that this can only fixed in the BIOS.

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