Created attachment 134994 [details] dmesg output Fedora 26 Kernel 4.13.5-200.fc26.x86_64 xorg-x11-server-Xorg-1.19.3-4.fc26.x86_64 xorg-x11-drv-nouveau-1.0.15-1.fc26.x86_64 configuring Xorg to use nouveau driver fails to bring up Xorg. (EE) No devices detected. from nv.dmesg: nouveau 0000:03:00.0: bus: MMIO read of 00000000 FAULT at 612004 [ IBUS ] nouveau 0000:03:00.0: bus: MMIO read of 00000000 FAULT at 10ac08 [ IBUS ] From Xorg.0.log.old (EE) No devices detected.
Created attachment 134995 [details] Xorg.0.log.old
Were you expecting something different to happen? Here's my analysis... you're forcing the X server to load nouveau, even though the primary (i.e. vgaarb) GPU is the intel one. The NVIDIA GPU does not have any connectors or display hardware attached, and so xf86-video-nouveau can't load.
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