My card is supported by Linux 5.12 but native driver crashes.

[Spixmaster]

First of all, I do not need this driver anymore. My WLAN card seems to be supported by Linux kernel 5.12. I do not know anything about RFE which is mentioned regularly with this driver. I can just tell you that the driver for me is provided natively by the kernel.

Although, it connects it causes crashes after that. Sometimes immediately and the other times after a few minutes. The errors are solved if I turn off the wireless connection. By crash, I mean that the whole system just freezes and does not react anymore.

Unfortunately, I need to use LAN for some time. I hope that this will be fixed soon. Another solution is to blacklist the kernel provided driver.

[micwoj92]

Saw you comment on aur page too, do you know how to find out this RFE number? For me only network "crashes", the rest of system is fine but have to reconnect.

[Spixmaster]

@micwoj92 I do not know how to find it out. I do not even know what it means. Here is the relevant output of lspci -k. I do not see that number there but maybe someone else has an idea.

02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter
        DeviceName: WLAN
        Subsystem: Hewlett-Packard Company Device 831a
        Kernel driver in use: rtw_8821ce
        Kernel modules: rtw88_8821ce

[unbranched]

@Spixmaster @micwoj92 sudo dmesg|grep rfe

[micwoj92]

It doesn't show anything for me?

[Spixmaster]

dmesg puts out the kernel's ring buffer whatever that means. It does not show anything related to "RFE" for me too which may be caused by the situation that I am currently not able to use WLAN and instead use LAN as "RFE" describes some WLAN card property.

[unbranched]

It doesn't show anything because you have no errors. If you're using a kernel <5.12 you should see a message like "rfe N is not supported".

[micwoj92]

Right now I am using Linux lts 5.10.34 because of these network issues, do I have to uninstall this driver in order to see that message?

[Spixmaster]

I switched to Linux LTS too but not for too long. I think that this driver did not work as it compiles with the package "linux-headers" from the Arch repositories which has version 5.12.1.

From what I understand, use the native driver with Linux LTS v5.10.34 and the error message should appear.

If you want to solve the WLAN card driver issues just install this driver and perhaps blacklist the kernel provided driver. You can even install the normal "linux" package. I have it installed too and I recommend to do so.

The reason why our WLAN card driver broke is that with Linux 5.12 the native driver is used by default which crashes the system. The fix is stated a few sentences before. I hope that this driver gets fixed with the next patches. There is no reason to use the Linux LTS concerning this particular issue.

[micwoj92]

For LTS you need linux-lts-headers and it will work

[Spixmaster]

I did not know about this package. My problem with that is that "linux-headers" will be installed as the dependency either way because of the PKGBUILD.

[micwoj92]

Oh, then you should report it, I see that @tomaspinho is also maintainer. This is not needed and common packaging error, DKMS package already has these headers in optdepends. If it won't be resolved then you can fill orphan request take over the package and fix. I never noticed this because I have 2 kernels installed almost all the time.

[tomaspinho]

If you're not running the mainline Arch kernel, why not just install from this repository following instructions? Should assume your LTS kernel headers correctly

[alium]

Subsystem: Hewlett-Packard Company Device 831a

that is probably RFE2 , same as my (my lspci show the same entry). If you install linux-lts, you need modify in PKGBUILD to makedepends=('git' 'bc' 'linux-lts-headers'). rtw88_8821ce must be blacklisted.

as i wrote in another topic, native driver for RFE2 in kernel is not good. I have big problems too. The only driver that works for me without problems is 8821ce.

First of all, I do not need this driver anymore

you should maybe rather open bug in bugzilla.kernel.org for crashing native driver ;)

[neutr0nStar]

Please can you also check if the Bluetooth is working or not ?