Bug#1103959: firmware-realtek: Corrupted firmware file rtw8852c_fw-1.bin

[Salvatore Bonaccorso <carnil@debian.org>]

Hi,

On Wed, Apr 23, 2025 at 08:18:01AM +0200, Tomasz Jeruzalski wrote:
> Package: firmware-realtek
> Version: 20250410-1
> Severity: important
> X-Debbugs-Cc: t.jeruzalski@hobosystems.pl
> 
> 
> Dear Maintainer,
> 
> package firmware-realtek in version 20250410-1 has corrupted firmware
> file rtw8852c_fw-1.bin which fails to load when modprobing module
> rtw89_8852ce. The WiFi adapter is Realtek Semiconductor Co., Ltd. RTL8852CE PCIe 802.11ax Wireless Network Controller (rev 01).
> 
> Although this bug occurred in Devuan Linux this issue applies to Debian
> too, because this package was pulled directly from Debian repository
> (via https://packages.debian.org).
> 
> Downgrading package firmware-realtek to version from Debian stable fixes
> this issue.
> 
> Kernel version is 6.12.22-amd64.

FTR, the firmware has been reverted upstream with:
https://gitlab.com/kernel-firmware/linux-firmware/-/commit/cb465aa0042bc2057579b313f518a80a2207a55c

Quoting the commit:
| Subject: [PATCH] Revert "rtw89: 8852c: update fw to v0.27.125.0"
| 
| Since new format is supported by kernel v6.13 and later, older driver
| can't load this firmware correct. Revert this and re-add this with
| rtw8852c_fw-2.bin by latter commit.
| 
| rtw8852c_fw-1.bin will be kept to v0.27.122.0.

Regards,
Salvatore