GM206: MMIO write of 800000ec FAULT at 10eb14 [ IBUS ]

Submitted by Johnny B. Goode

Assigned to Nouveau Project

Link to original bug (#108982)

Description

i7-6700, GM206 [GTX 950]
No touch screen, no hybrid graphics. Pure box. Intel 530 on chip but disabled in BIOS. Only one Asus Graphic Card.
Problem started on Kernel 4.10.x and is going on next kernels. Kernel 4.9.x is FAULT free. Different distributions Fedora, Gentoo.

dmesg | grep nouveau
[ 11.511078] fb: switching to nouveaufb from EFI VGA
[ 11.511602] nouveau 0000:01:00.0: NVIDIA GM206 (126020a1)
[ 11.601757] nouveau 0000:01:00.0: bios: version 84.06.3d.00.6f
[ 11.885711] nouveau 0000:01:00.0: fb: 2048 MiB GDDR5
[ 11.885746] nouveau 0000:01:00.0: bus: MMIO write of 800000ec FAULT at 10eb14 [ IBUS ]
[ 11.979550] nouveau 0000:01:00.0: DRM: VRAM: 2048 MiB
[ 11.979551] nouveau 0000:01:00.0: DRM: GART: 1048576 MiB
[ 11.979553] nouveau 0000:01:00.0: DRM: TMDS table version 2.0
[ 11.979554] nouveau 0000:01:00.0: DRM: DCB version 4.1
[ 11.979556] nouveau 0000:01:00.0: DRM: DCB outp 00: 01000f02 00020030
[ 11.979558] nouveau 0000:01:00.0: DRM: DCB outp 01: 02000f00 00000000
[ 11.979559] nouveau 0000:01:00.0: DRM: DCB outp 02: 02811f66 04400010
[ 11.979560] nouveau 0000:01:00.0: DRM: DCB outp 03: 02011f62 00020010
[ 11.979562] nouveau 0000:01:00.0: DRM: DCB outp 04: 02022f72 00020020
[ 11.979563] nouveau 0000:01:00.0: DRM: DCB outp 05: 04033f82 00020030
[ 11.979564] nouveau 0000:01:00.0: DRM: DCB outp 15: 01df4ff8 00000000
[ 11.979566] nouveau 0000:01:00.0: DRM: DCB conn 00: 00001030
[ 11.979567] nouveau 0000:01:00.0: DRM: DCB conn 01: 00010146
[ 11.979568] nouveau 0000:01:00.0: DRM: DCB conn 02: 00020261
[ 11.979569] nouveau 0000:01:00.0: DRM: DCB conn 03: 02000331
[ 11.979570] nouveau 0000:01:00.0: DRM: DCB conn 04: 00000470
[ 11.982170] nouveau 0000:01:00.0: DRM: failed to create encoder 1/8/0: -19
[ 11.982172] nouveau 0000:01:00.0: DRM: Virtual-1 has no encoders, removing
[ 12.233674] nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies
[ 12.429065] nouveau 0000:01:00.0: DRM: allocated 2560x1440 fb: 0xa0000, bo 000000000065bfd7
[ 12.429187] fbcon: nouveaufb (fb0) is primary device
[ 12.564503] nouveau 0000:01:00.0: fb0: nouveaufb frame buffer device
[ 12.587799] [drm] Initialized nouveau 1.3.1 20120801 for 0000:01:00.0 on minor 0

01:00.0 VGA compatible controller: NVIDIA Corporation GM206 [GeForce GTX 950] (rev a1) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. GM206 [GeForce GTX 950]
Flags: bus master, fast devsel, latency 0, IRQ 136
Memory at de000000 (32-bit, non-prefetchable) [size=16M]
Memory at c0000000 (64-bit, prefetchable) [size=256M]
Memory at d0000000 (64-bit, prefetchable) [size=32M]
I/O ports at e000 [size=128]
Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [60] Power Management version 3
Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [78] Express Legacy Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [258] L1 PM Substates
Capabilities: [128] Power Budgeting >
Capabilities: [420] Advanced Error Reporting
Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 >
Capabilities: [900] #19
Kernel driver in use: nouveau
Kernel modules: nouveau


xf86-video-nouveau-1.0.15-r1
libdrm-2.4.96
kernel-4.19.6