Possible Regression of RTL8852BE on linux-firmware-realtek

Possible Regression of RTL8852BE on linux-firmware-realtek

[oldherl]

I am using realtek RTL8852BE on a laptop.
After a recent update of the firmware, the wifi disconnects often.

I am using Arch Linux and confirm that the good version of firmware
before update was linux-firmware-realtek 20250708-1.
rtw89_8852be 0000:01:00.0: Loaded FW: rtw89/rtw8852b_fw-1.bin, sha256: 
81c146406dce47cfdf719f88d0fdb13b75cfb651226650722280ab81f7e331f2

The bad version after update is linux-firmware-realtek 20250808-1
rtw89_8852be 0000:01:00.0: Loaded FW: rtw89/rtw8852b_fw-1.bin, sha256: 
95076d6d128695b29830e8a0e5efbd0af60a5590ad37bbd8591a0281952a61de

The commit of the firmware update is
https://gitlab.com/kernel-firmware/linux-firmware/-/commit/
eb03c8ce595d75f2a2f81cbe87698c2539f64377

I was using the linux 6.16.1.arch1-1 kernel for both attempts.

Possible related log out:
[ 3455.877469] rtw89_8852be 0000:01:00.0: timed out to flush pci txch: 0
[ 3456.081010] rtw89_8852be 0000:01:00.0: timed out to flush queues
[ 3456.147252] rtw89_8852be 0000:01:00.0: timed out to flush pci txch: 0
[ 3456.352106] rtw89_8852be 0000:01:00.0: timed out to flush queues
[ 3456.371340] rtw89_8852be 0000:01:00.0: timed out to flush pci txch: 0
[ 3456.576661] rtw89_8852be 0000:01:00.0: timed out to flush queues
[ 3456.589698] rtw89_8852be 0000:01:00.0: timed out to flush pci txch: 0

I am also posting the bug to Arch Linux bug tracker:
https://gitlab.archlinux.org/archlinux/packaging/packages/linux-firmware/-/
issues/26

RE: Possible Regression of RTL8852BE on linux-firmware-realtek

[Ping-Ke Shih]

oldherl <oldherl@archlinuxcn.org> wrote:
> I am using realtek RTL8852BE on a laptop.
> After a recent update of the firmware, the wifi disconnects often.
> 
> I am using Arch Linux and confirm that the good version of firmware
> before update was linux-firmware-realtek 20250708-1.
> rtw89_8852be 0000:01:00.0: Loaded FW: rtw89/rtw8852b_fw-1.bin, sha256:
> 81c146406dce47cfdf719f88d0fdb13b75cfb651226650722280ab81f7e331f2
> 
> The bad version after update is linux-firmware-realtek 20250808-1
> rtw89_8852be 0000:01:00.0: Loaded FW: rtw89/rtw8852b_fw-1.bin, sha256:
> 95076d6d128695b29830e8a0e5efbd0af60a5590ad37bbd8591a0281952a61de
> 
> The commit of the firmware update is
> https://gitlab.com/kernel-firmware/linux-firmware/-/commit/
> eb03c8ce595d75f2a2f81cbe87698c2539f64377
> 
> I was using the linux 6.16.1.arch1-1 kernel for both attempts.

Did you use Bluetooth too? Please try 6.17-rc to see if it can improve.

> 
> Possible related log out:
> [ 3455.877469] rtw89_8852be 0000:01:00.0: timed out to flush pci txch: 0
> [ 3456.081010] rtw89_8852be 0000:01:00.0: timed out to flush queues
> [ 3456.147252] rtw89_8852be 0000:01:00.0: timed out to flush pci txch: 0
> [ 3456.352106] rtw89_8852be 0000:01:00.0: timed out to flush queues
> [ 3456.371340] rtw89_8852be 0000:01:00.0: timed out to flush pci txch: 0
> [ 3456.576661] rtw89_8852be 0000:01:00.0: timed out to flush queues
> [ 3456.589698] rtw89_8852be 0000:01:00.0: timed out to flush pci txch: 0
> 
> I am also posting the bug to Arch Linux bug tracker:
> https://gitlab.archlinux.org/archlinux/packaging/packages/linux-firmware/-/
> issues/26

Re: Possible Regression of RTL8852BE on linux-firmware-realtek

[oldherl]

On 2025-08-29 15:38, Ping-Ke Shih wrote:
> Did you use Bluetooth too? Please try 6.17-rc to see if it can improve.

I do have bluetooth enabled but at that moment no bluetooth devices
were connected to the laptop. I will try 6.17-rc later.

RE: Possible Regression of RTL8852BE on linux-firmware-realtek

[Ping-Ke Shih]

oldherl@archlinuxcn.org <oldherl@archlinuxcn.org> wrote:
> Sent: Friday, August 29, 2025 1:45 PM
> On 2025-08-29 15:38, Ping-Ke Shih wrote:
> > Did you use Bluetooth too? Please try 6.17-rc to see if it can improve.
> 
> I do have bluetooth enabled but at that moment no bluetooth devices
> were connected to the laptop. I will try 6.17-rc later.

Please also try to disable power save by
   iw wlan0 set power_save off