I have a similar issue with my NP900X5N laptop with Kaby Lake and 940MX card, on 4.20.0 and Kali Linux.
My output: root@kali:/etc/modprobe.d# dmesg | grep nouveau [ 35.888423] nouveau: detected PR support, will not use DSM [ 35.888447] nouveau 0000:01:00.0: enabling device (0006 -> 0007) [ 35.888582] nouveau 0000:01:00.0: NVIDIA GM108 (1180d0a2) [ 35.900141] nouveau 0000:01:00.0: bios: version 82.08.67.00.04 [ 35.984081] nouveau 0000:01:00.0: fb: 2048 MiB DDR3 [ 35.984104] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 6013d4 [ IBUS ] [ 35.997510] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 10ac08 [ IBUS ] [ 36.035684] nouveau 0000:01:00.0: DRM: VRAM: 2048 MiB [ 36.035686] nouveau 0000:01:00.0: DRM: GART: 1048576 MiB [ 36.035688] nouveau 0000:01:00.0: DRM: Pointer to TMDS table invalid [ 36.035690] nouveau 0000:01:00.0: DRM: DCB version 4.0 [ 36.036798] nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies [ 36.036915] [drm] Initialized nouveau 1.3.1 20120801 for 0000:01:00.0 on minor 1 [ 37.551790] nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 619444 [ IBUS ] -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/1684123 Title: bus: MMIO read of 00000000 FAULT at 3e6684 [ IBUS ] To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1684123/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
