Comment # 7 on bug 948383 from Alp�r J�ttner

Sorry for the delayed answer.
Tumbleweed seems a kind of moving target.

I made a fresh install with using
openSUSE-Tumbleweed-NET-x86_64-Snapshot20151014-Media.iso

I chose GNOME desktop and no-auto-login. Timezone is set to Hungey, everything
else is left default.

The X won't start, as just as before.

After the reboot (triggered by the install), you can see the normal console
boot messages, but the CPU spinns 100% and the screen is flickering in every
couple second. You cannot log in even in the normal console (CTRL+ALT+F1),
because of this flickering.

After several minutes, the CPU becomes idle and it is now possible to log in in
the console. There is no such a thing as /var/log/Xorg.0.log. However I found
one under /var/log/gdm/.local/share/xorg/, please find it attached.