RE: rtw89_8852ce firmware crash (SER catches error) on kernel 6.18.13

[Ping-Ke Shih <pkshih@realtek.com>]

Sergio <srg.llorente.bn@gmail.com> wrote:
> Hi all,
> 
> I am experiencing frequent firmware crashes and micro-disconnects with
> my RTL8852CE Wi-Fi card. The system seems to be repeatedly recovering
> from internal errors (System Error Recovery), which causes lag spikes
> and connection drops.
> 
> Here is my system and hardware information:
> 
> * Kernel: Linux fedora 6.18.13-200.fc43.x86_64 [cite: 1]
> * Hardware: Realtek Semiconductor Co., Ltd. RTL8852CE PCIe 802.11ax
> Wireless Network Controller [10ec:c852]
> * Subsystem: Lenovo Device [17aa:5852]
> * Firmware: loaded rtw89/rtw8852c_fw-2.bin [cite: 2]
> * Firmware version: 0.27.129.4 (3f1a5302) [cite: 2]
> 
> Here is a brief snippet of the dmesg output during the crash:
> 
> [12391.222707] rtw89_8852ce 0000:02:00.0: SER catches error: 0x1001 [cite: 9]
> [12391.223497] rtw89_8852ce 0000:02:00.0: FW status = 0x6a008108 [cite: 9]
> [12391.223521] rtw89_8852ce 0000:02:00.0: [ERR]fw PC = 0x201465c8 [cite: 9]
> [12391.223733] rtw89_8852ce 0000:02:00.0: SER catches error: 0x1002 [cite: 10]
> 
> I have attached the full dmesg crash log for your review.

As attached log, the SER only happened once and it was a L1 SER, which
I suppose firmware recover the state without connection loss. 

As you mentioned at beginning that it happens repeatedly, could you share
how frequent it does? 

Could you try to turn off power saving by 'iw wlan0 set power_save off` to
see if it can become stable? And, please disable BT device entirely to
clarify problem. 

Ping-Ke