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 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>>
>> 
>> 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