Dear Maintainer,

   * What led up to the situation?
        - install latest Mesa from BPO (sudo apt install -t bookworm-backports
mesa-vulkan-drivers mesa-vulkan-drivers:i386)
        - reboot
        - plasma wayland goes blackscreen with only mouse cursor
        - reproductible on VM and real hardware.

   * What exactly did you do (or not do) that was effective (or
     ineffective)?
        - plasma-wayland session goes blackscreen with official bpo
        - I haven't any issues using binary packages from mesa-kisak PPA on
Debian 12  (Jammy for equivalent) by adding apt repository
        - I haven't the issue while recompiling mesa by myself with .dsc from
kisak (using debian i386 container for multiarch building)

        My pacscript link :

https://github.com/pacstall/pacstall-
programs/blob/70ef7c7ef82c1c1ef060950e5e0034ffcf3f6ef6/packages/mesa-kisak-
fresh/mesa-kisak-fresh.pacscript

        Kisak .dsc link :

https://launchpad.net/~kisak/+archive/ubuntu/kisak-
mesa/+sourcefiles/mesa/24.2.5~kisak1~j/mesa_24.2.5~kisak1~j.dsc

        - After installing Mesa BPO, I'm no more able to install Steam, but no
issues with Kisak bin packages or pacstall package.
        - Installing steam with -t bookworm-backports steam works with no
errors by apt but -> blackscreen

        - new libdrm also is not a runtime dependency with kisak bin packages,
but upgrading libdrm from my pacscript, needed to build new mesa version,
doesn't make any issues, so I don't think it's a libdrm issue (not tested to
only install libdrm from bpo)

        libdrm pacscript link :

https://github.com/pacstall/pacstall-
programs/blob/master/packages/libdrm/libdrm.pacscript

        This is all info I have to help fix the issue but I don't know why
kisak build works and official BPO doesn't

        Best regards.
        Davius