Re: [Bug report] - RTL8821CE 802.11ac PCIe Wireless Network Adapter - Not handled properly by the rtw_8821ce dirver on Kernel 5.11.11

[Larry Finger <Larry.Finger@lwfinger.net>]

On 4/19/21 2:50 PM, michaltoma wrote:
> 
> *> De :* Larry Finger <larry.finger@gmail.com> de la part de Larry Finger 
> <Larry.Finger@lwfinger.net>
> *> Envoyé :* lundi 19 avril 2021 19:38
> *> À :* michaltoma; linux-wireless@vger.kernel.org
> *> Objet :* Re: [Bug report] - RTL8821CE 802.11ac PCIe Wireless Network Adapter 
> - Not handled properly by the rtw_8821ce dirver on Kernel 5.11.11
>  >
>  > On 4/19/21 4:56 AM, michaltoma wrote:
>  > >
>  > >  >*De :*Larry Finger <larry.finger@gmail.com> de la part de Larry Finger
>  > > <Larry.Finger@lwfinger.net>
>  > >  >*Envoyé :*jeudi 15 avril 2021 19:57
>  > >  >*À :*michaltoma; linux-wireless@vger.kernel.org
>  > >  >*Objet :*Re: [Bug report] - RTL8821CE 802.11ac PCIe Wireless Network 
> Adapter -
>  > > Not handled properly by the rtw_8821ce dirver on Kernel 5.11.11
>  > >  >
>  > >> > On 4/15/21 5:09 AM, michaltoma wrote:
>  > >> > Hello Larry,
>  > >> >
>  > >> >
>  > >> > Here is the full dmesg:
>  > >> >
>  > >> > https://pastebin.com/ZUXQeKAt <https://pastebin.com/ZUXQeKAt> 
> <https://pastebin.com/ZUXQeKAt <https://pastebin.com/ZUXQeKAt>>
>  > > <https://pastebin.com/ZUXQeKAt <https://pastebin.com/ZUXQeKAt 
> <https://pastebin.com/ZUXQeKAt>>>
>  > >>
>  > >> On this list, please do not top post.
>  > >>
>  > >> Thanks for the upload. Those 80 BIOS Errors do not lend much confidence in 
> the
>  >>> quality of your BIOS! Have you checked for updates?
>  >>>
>  >>> Have you tried when setting the options disable_msi=y and disable_aspm=y for
>  >>> module rtw88_pci if you use the kernel driver, or module rtw_pci if you use my
>  >>> GitHub repo. That fixes a lot of strange errors.
>  >>>
>  >>> Larry
>  >>
>  >> Hello Larry,
>  >>
>  >> I tried to update the BIOS (without success so far as Lenovo doesn't provide
>  >> anything else than a windows 32 bit exe file).
>  >> But this led me to boot a windows 10 on my laptop. Surprisingly this somehow
>  >> "unlocked" the Wifi.
>  >> Seems the issue is somehow related to the chip deep sleep mode (I remember
>  >> reading something about this a while back), from which the driver is unable to
>  >> wake it up but the windows driver manages to do so.
>  >> Not sure if this might help in diagnosing the problem but just reporting back.
>  >
>  > If you boot Windows and Linux, it is absolutely imperative that you disable
>  > "quick boot" in Windows. That mode sometimes leaves devices disables for other
>  > OS's. I think this is what happened here.
>  >
>  > Larry
> 
> Unfortunately no. I'm only booting Linux since day 0 of the laptop. This was 
> only required to try to flash the bios so I installed a copy of windows on an 
> external drive. __

Someone (the Factory) may have had Windows on it and did a quick-boot shutdown. 
I do not know any other way the iface could have been left in the wrong state.

Larry