rtw89 driver

rtw89 driver

[Slade Watkins]

Hi there,
Quick question for wireless folks: would backporting the rtw89
driver[1] (Realtek 8852AE) to kernels older than 5.16.y be possible at
some point down the road? I ask this as, when testing a stable build
of 5.15.y a bit ago, I had an issue where the driver wasn't present
and the system I was testing it on wasn't happy and started kicking
errors. (It's fairly new, so I did kind of expect that.) I was,
however, able to solve this by manually building and installing the
drivers so it wasn't that big of a deal.

[1] https://github.com/lwfinger/rtw89

Thanks,
Slade

Re: rtw89 driver

[Larry Finger]

On 2/3/22 18:26, Slade Watkins wrote:
> Hi there,
> Quick question for wireless folks: would backporting the rtw89
> driver[1] (Realtek 8852AE) to kernels older than 5.16.y be possible at
> some point down the road? I ask this as, when testing a stable build
> of 5.15.y a bit ago, I had an issue where the driver wasn't present
> and the system I was testing it on wasn't happy and started kicking
> errors. (It's fairly new, so I did kind of expect that.) I was,
> however, able to solve this by manually building and installing the
> drivers so it wasn't that big of a deal.
> 
> [1] https://github.com/lwfinger/rtw89

If for some reason, you do not like my version of the kernel code in the GitHub 
repo that you reference, then you could use the Backports Project.

Backporting a driver into one of the stable trees is not a sanctioned activity. 
Stable kernels only get fixes for bugs, not new features such as a complete driver.

At least one distro packages rtw89 as kernel modules the same as my GitHub repo. 
That distro is openSUSE, which gets its source from that very repo. There may be 
others that provide similar packages.

Larry

Re: rtw89 driver

[Slade Watkins]

On Thu, Feb 3, 2022 at 7:57 PM Larry Finger <Larry.Finger@lwfinger.net> wrote:
>
> If for some reason, you do not like my version of the kernel code in the GitHub
> repo that you reference, then you could use the Backports Project.
>
> Backporting a driver into one of the stable trees is not a sanctioned activity.
> Stable kernels only get fixes for bugs, not new features such as a complete driver.
>
> At least one distro packages rtw89 as kernel modules the same as my GitHub repo.
> That distro is openSUSE, which gets its source from that very repo. There may be
> others that provide similar packages.

Alright thanks for the info, Larry! I really appreciate it :-)

All the best,
Slade

RE: rtw89 driver

[Pkshih]

> -----Original Message-----
> From: Nikolay Stanchev <stanchev.nick@gmail.com>
> Sent: Wednesday, November 10, 2021 7:11 PM
> To: linux-wireless@vger.kernel.org
> Subject: Fwd: rtw89 driver
> 
> Hi there,
> 
> A couple of months ago I bought a new machine from Lenovo (T14 AMD Gen 2
> 5850U) and I'm using this wifi driver with Ubuntu 21.10 with kernel
> 5.13.0-20-generic:
> https://github.com/lwfinger/rtw89
> The problem is that the machine reboots randomly. I've attached logs and
> it seems this is caused by the driver.
> The system log is attached and the issue is also described in this thread:
> https://forums.lenovo.com/t5/Ubuntu/T14-AMD-Gen-2-5850U/m-p/5108298?page=1#5479053

I see you post an issue in Larry's github, and I suggest to add an additional
module parameter: 

/etc/modprobe.d/50-rtw89.conf
options rtw89pci disable_aspm_l1=y disable_aspm_l1ss=y disable_clkreq=y

After rebooting machine, please check /sys/module/rtw89_pci/parameters/* to
see if above values are expected.


Since your log is truncated, I suggest to use netconsole [1] to capture
the log. To do this, you need an additional PC with Ethernet connect to
this PC.

[1] https://wiki.ubuntu.com/Kernel/Netconsole

--
Ping-Ke