Trying to launch steam crashing pc

hello!
judging by the output of your journalctl it seems to me like the issue is generic and not specific (congratulations on that marvelous " *ERROR* ring gfx_0.0.0 timeout)

Check this thread for reference: CLICK ME

I dunno if this can be of any help to you, but here’s what I would do:

  1. fully remove steam
sudo pacman -Rsn steam #this is assuming you installed this exact package and its dependencies

edit: forgot a very important thing: you have to manually delete all steam traces still on disk. They vary, so be sure to hunt for hidden files and directories. The most common is under home/.steam but you may have .steampid and more.

  1. fully remove graphic drivers
sudo pacman -Rsn amdgpu #again, assuming you installed this exact driver, otherwise just change with the one you are using right now
  1. install the drivers that seems to give the least headaches these days
sudo pacman -S vulkan-radeon lib32-vulkan-radeon
  1. reinstall steam
sudo pacman -Sy steam #if prompted, confirm the choice for "vulkan radeon"

I have AMD cpu and AMD videocard, and Cyberpunk runs flawless.

best of luck!