By the way. I went to linux kernel 5.2.1 ideapad_laptop.c and now there's no no_hw_rfkill_list. It's the opposite, now it has to be specified if there is a hw-rfkill. So that new laptops don't get this problem.
One option is to install a ppa with a recent kernel.
From the file:
* Some ideapads have a hardware rfkill switch, but most do not have one.
* Reading VPCCMD_R_RF always results in 0 on models without a hardware rfkill,
* switch causing ideapad_laptop to wrongly report all radios as hw-blocked.
* There used to be a long list of DMI ids for models without a hw rfkill
* switch here, but that resulted in playing whack a mole.
* More importantly wrongly reporting the wifi radio as hw-blocked, results in
* non working wifi. Whereas not reporting it hw-blocked, when it actually is
* hw-blocked results in an empty SSID list, which is a much more benign
* failure mode.
* So the default now is the much safer option of assuming there is no
* hardware rfkill switch. This default also actually matches most hardware,
* since having a hw rfkill switch is quite rare on modern hardware, so this
* also leads to a much shorter list.
*/
By the way. I went to linux kernel 5.2.1 ideapad_laptop.c and now there's no no_hw_rfkill_list. It's the opposite, now it has to be specified if there is a hw-rfkill. So that new laptops don't get this problem.
One option is to install a ppa with a recent kernel.
From the file:
* Some ideapads have a hardware rfkill switch, but most do not have one.
* Reading VPCCMD_R_RF always results in 0 on models without a hardware rfkill,
* switch causing ideapad_laptop to wrongly report all radios as hw-blocked.
* There used to be a long list of DMI ids for models without a hw rfkill
* switch here, but that resulted in playing whack a mole.
* More importantly wrongly reporting the wifi radio as hw-blocked, results in
* non working wifi. Whereas not reporting it hw-blocked, when it actually is
* hw-blocked results in an empty SSID list, which is a much more benign
* failure mode.
* So the default now is the much safer option of assuming there is no
* hardware rfkill switch. This default also actually matches most hardware,
* since having a hw rfkill switch is quite rare on modern hardware, so this
* also leads to a much shorter list.
*/