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From:   Pkshih <pkshih@realtek.com>
To:     Stefan K <shadow_7@gmx.net>,
        "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Subject: RE: rtw89: unstable connection
Thread-Topic: rtw89: unstable connection
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Date:   Tue, 22 Mar 2022 07:17:44 +0000
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Hi 

> -----Original Message-----
> From: Stefan K <shadow_7@gmx.net>
> Sent: Monday, March 21, 2022 7:52 PM
> To: linux-wireless@vger.kernel.org
> Subject: rtw89: unstable connection
> 
> Hello,
> 
> I got an new Laptop (Lenovo T14 Gen2 AMD) and it has RTL8852AE chip, it can connect to WiFi, but its very
> slow and unstable:
> --- 8.8.8.8 ping statistics ---
> 100 packets transmitted, 60 received, 60% packet loss, time 99514ms
> rtt min/avg/max/mdev = 578.297/4515.244/10612.149/2763.037 ms, pipe 11
> 
> I'm running on Debian bullseye with backport Kernel Linux 5.16.0-0.bpo.3-amd64
> 
> I reported this on github (https://github.com/lwfinger/rtw89/issues/133) and I added the following (as
> recommended):
> cat /etc/modprobe.d/50-rtw89.conf
> options rtw89_pci disable_aspm_l1=y disable_aspm_l1ss=y
> 

In additional to above options, please also add below option:

   options rtw89_core disable_ps_mode=y

Then, do cold reboot, or shutdown/power-on would be good.

> [ 1532.499712] rtw89_pci 0000:03:00.0:  [FWBB][WARN][CMW] No specific sta connect
> [ 1532.600273] rtw89_pci 0000:03:00.0:  [FWBB][WARN][CMW] No specific sta connect
> [ 1532.700650] rtw89_pci 0000:03:00.0:  [FWBB][WARN][CMW] No specific sta connect

This log shows that you use old firmware, please copy the latest firmware
to /lib/firmware/rtw89/. After applying the firmware, kernel log will show

rtw89_8852ae 0000:03:00.0: Firmware version 0.13.36.0, cmd version 0, type 1
rtw89_8852ae 0000:03:00.0: Firmware version 0.13.36.0, cmd version 0, type 3

--
Ping-Ke