ROCK 5B/5B+ RTL8852BE probe failure on v6.18-rc

[Manivannan Sadhasivam]

On Tue, Oct 21, 2025 at 07:12:21PM +0900, FUKAUMI Naoki wrote:
> Hi,
> 
> I've observed an issue where the RTL8852BE fails to probe on the ROCK 5B and
> ROCK 5B+ using Linux v6.18-rc.
> 
> [    7.719288] rtw89_8852be 0002:21:00.0: loaded firmware
> rtw89/rtw8852b_fw-1.bin
> [    7.720192] rtw89_8852be 0002:21:00.0: enabling device (0000 -> 0003)
> [    7.728596] rtw89_8852be 0002:21:00.0: Firmware version 0.29.29.5
> (da87cccd), cmd version 0, type 5
> [    7.729407] rtw89_8852be 0002:21:00.0: Firmware version 0.29.29.5
> (da87cccd), cmd version 0, type 3
> [   11.420623] rtw89_8852be 0002:21:00.0: failed to dump efuse physical map
> [   11.422859] rtw89_8852be 0002:21:00.0: failed to setup chip information
> [   11.425273] rtw89_8852be 0002:21:00.0: probe with driver rtw89_8852be
> failed with error -16
> 
> This issue does not reproduce on v6.16. The issue does not reproduce with
> the MT7921E or the AX210. Furthermore, the issue does not reproduce on the
> ROCK 5A or the ROCK 5 ITX+.
> 
> The issue appears not to reproduce in or prior to commit 14bed9bc81ba. The
> issue reproduces, albeit with a low incidence rate, after commit
> bf76f23aa1c1. It reproduces, but not 100%, on v6.17, and is likely 100%
> reproducible on v6.18-rc.
> 

You should try to bisect the commit in v6.18-rc1 that is causing the failure
reliably. This will greatly help in fixing the issue.

> The dmesg output and the result of lspci -vv when the issue occurs can be
> found below:
>  https://gist.github.com/RadxaNaoki/bf57b6d3d88c1e4310a23247e7bac9de
> 
> What should I investigate next?
> 

Nothing looks like a PCIe breakage AFAICT. Maybe you should check with rtw89
maintainers:

Ping-Ke Shih <pkshih at realtek.com> (maintainer:REALTEK WIRELESS DRIVER (rtw89))
linux-wireless at vger.kernel.org (open list:REALTEK WIRELESS DRIVER (rtw89))

Note: Since the failure happens after firmware loading, it could be the
firmware incompatibility issue also. But that could only be confirmed by rtw89
maintainers/community. 

- Mani

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