Steam Core Dumped/F28/Nvidia proprietary drives

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Recently bought ASUS ROG G703GS-E5069T ... GPU Nvidia 1070 Installed driver nvidia proprietary like https://www.if-not-true-then-false.co...

Installed Steam From non free fusion repo and negativo17 Repositories.

Same error :

$ steam
Running Steam on fedora 28 64-bit
STEAM_RUNTIME is enabled automatically
Pins up-to-date!
/home/fedosix/.local/share/Steam/steam.sh: ligne 823: /home/fedosix/.local/share/Steam/ubuntu12_32/steam-runtime/run.sh: No such file or directory
Installing breakpad exception handler for appid(steam)/version(0)
/home/fedosix/.local/share/Steam/steam.sh : ligne 876 : 32746 Segmentation fault      (core dumped)$STEAM_DEBUGGER "$STEAMROOT/$STEAMEXEPATH" "$@"

[fedosix@localhost ~]$ steam --reset
/home/fedosix/.local/share/Steam/steam.sh: ligne 609: pas de correspondance : ssfn*
Running Steam on fedora 28 64-bit
STEAM_RUNTIME is enabled automatically
Pins up-to-date!
/home/fedosix/.local/share/Steam/steam.sh: ligne 821: /home/fedosix/.local/share/Steam/ubuntu12_32/steam-runtime/run.sh: No such file or directory
Installing breakpad exception handler for appid(steam)/version(0)
/home/fedosix/.local/share/Steam/steam.sh : ligne 874 :   439 Segmentation fault      (core dumped)$STEAM_DEBUGGER "$STEAMROOT/$STEAMEXEPATH" "$@"
(failed reverse-i-search)`ldd': systemctl set-default mu^Ci-user.target
# ldd /home/fedosix/.steam/bin/steam
        linux-gate.so.1 (0xf7fca000)
        libX11.so.6 => /lib/libX11.so.6 (0xf7a16000)
        librt.so.1 => /lib/librt.so.1 (0xf7a0c000)
        libdl.so.2 => /lib/libdl.so.2 (0xf7a07000)
        libstdc++.so.6 => /lib/libstdc++.so.6 (0xf7877000)
        libpthread.so.0 => /lib/libpthread.so.0 (0xf7858000)
        libm.so.6 => /lib/libm.so.6 (0xf7756000)
        libc.so.6 => /lib/libc.so.6 (0xf75b3000)
        libxcb.so.1 => /lib/libxcb.so.1 (0xf7586000)
        /lib/ld-linux.so.2 (0xf7fcc000)
        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xf7568000)
        libXau.so.6 => /lib/libXau.so.6 (0xf7563000)
[root@localhost share]# ^C

[root@localhost share]# uname -ar
Linux localhost.localdomain 4.18.16-200.fc28.x86_64 #1 SMP Sat Oct 20 23:53:47 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Any advice / idea ?