Hello @Xlond, what processor is in your system? Does it support SSE3 (from #5164)?
Hello @Xlond I had the same problem that you on Fedora and found a workaround in Fedora (that seems to work in Ubuntu as well) Could you please try to add "-steamos" to your instruction. So you should run:
steam -steamos
Or with bumblebee (primusrun)
primusrun steam -steamos
As I said this is a workaround reported on issue #5428. Please confirm if this work for you. :dancing_men:
Closing due to lack of feedback.
Nothing extracted yet.
Your system information
after installing the steam client, i cant start client and i get that error

/home/xlond/.local/share/Steam/steam.sh: line 927: 16592 invalid instruction (подготовлен дамп ядра) $STEAM_DEBUGGER "$STEAMROOT/$STEAMEXEPATH" "$@"
https://gist.github.com/Xlond/98e3a55ddd66906377b9a9f88fcc1706
at steam.sh: line 927 i see:
Steps for reproducing this issue: