protonscr

Unable to install on debian testing with i386 enabled

steamclosed
ValveSoftware/steam-for-linux#13334 · opened 2026-06-20 by romanyacik · updated 2026-06-20 · 1 comments · github
Rromanyacik 2026-06-20 github

Your system information

  • Steam client version (build number or date): 1:1.0.0.85
  • Distribution (e.g. Ubuntu): Debian (Forky)
  • Opted into Steam client beta?: No
  • Have you checked for system updates?: Yes
  • Steam Logs: [generate by running this command in a terminal tar -zcvf ~/Desktop/steam-logs.tar.gz ~/.steam/steam/logs]
  • GPU: AMD

Please describe your issue in as much detail as possible:

Describe what you expected should happen and what did happen. Please link any large code pastes as a Github Gist

Steps for reproducing this issue:

  1. sudo dpkg --add-architecture i386
  2. download client from https://cdn.fastly.steamstatic.com/client/installer/steam.deb
  3. attempt to install with gdebi
  4. error as can be seen at: https://gist.github.com/romanyacik/b4891af4c718963a7699eebfa0f730ac
Kkisak-valve maintainer 2026-06-20 github

Hello @romanyacik, this is a distro issue that needs to be resolved by your distro's package maintainers for LLVM.

Debian's multiarch implementation requires that architecture variants of a package have exactly the same package version. Also, apt strongly dislikes downgrading packages to resolve conflicts. The forky repository apparently does not currently have matched versions (https://packages.debian.org/forky/libllvm21 focusing on +b1 / +b2 / +b3). Looking directly at one of the repo mirrors, this might just be a coordination delay with getting the current build rolled out.

The next step in troubleshooting this would be to sudo apt update and check if that brings what packages are available you back into alignment. If not, then inspect what versions of the conflicting package are available from the repository with something like apt policy libllvm21 libllvm21:i386 and you could try explicitly asking apt to install both the 32 bit and 64 bit variants of an exact version at the same time (something similar to sudo apt install libllvm21=21.1.8-7+b3 libllvm21:i386=21.1.8-7+b3 NOTE: If at any point while troubleshooting, if apt asks if it should remove a bunch of packages, DO NOT let it continue.

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