On my HP 255 G5 Notebook PC, following "zypper dup --no-allow-vendor-change"
(openSUSE-20231218-0) the system no longer starts in graphics mode.

- I did some checks and the problem seems to be on the "radeonsi_dri" driver;
The following error message appears in the dmesg:
[ 84.119680] gnome-shell[1557]: segfault at 40 ip 00007ff2ca32b98d sp
00007ffe59c27170 error 4 in radeonsi_dri.so[7ff2c9c91000+1476000] likely on CPU
1 (core 1, socket 0)

- Doing an lspci the video card is:
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Mullins [Radeon R3 Graphics] (rev 40)

- And the following is the output of the zypper info kernel-firmware-radeon
command:

Information for package kernel-firmware-radeon:
-------------------------------------------------
Repository : Main Repository (OSS)
Name : kernel-firmware-radeon
Version: 20240322-1.1
Arch : noarch
Vendor: openSUSE
Installed Size: 3.3 MiB
Installed : Yes (automatically)
Status: up-to-date
Source package : kernel-firmware-20240322-1.1.src
Upstream URL:
https://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/
Summary : Kernel firmware files for Radeon graphics driver
Description:
     This package contains compressed kernel firmware files for
     Radeon graphics driver.