Confirm. I get the same message with the same number (3e6684) using latest Debian testing with GeForce GTX 750 Ti:
01:00.0 VGA compatible controller: NVIDIA Corporation GM107 [GeForce GTX 750 Ti] (rev a2) (prog-if 00 [VGA controller]) I'm not using any proprietary drivers. My current xserver-xorg-video- nouveau version is 1:1.0.15-2. I've been getting this message for some months now during boot, only now took a picture and tried to search online - this is the only place. This message shows only for a blink of a second during boot, after filesystem check, and then continues to boot normally. Haven't noticed any misbehavior of GPU after machine has booted. -- You received this bug notification because you are a member of Desktop Packages, 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 ] Status in xserver-xorg-video-nouveau package in Ubuntu: Confirmed Bug description: This is the error i get when running xdiagnose: nouveau 0000:06:00.0: bus: MMIO read of 00000000 FAULT at 3e6684 [ IBUS ] ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: xserver-xorg-video-nouveau 1:1.0.14-0ubuntu1 ProcVersionSignature: Ubuntu 4.11.0-0.3-generic 4.11.0-rc6 Uname: Linux 4.11.0-0-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: GNOME Date: Wed Apr 19 15:21:16 2017 DistUpgraded: Fresh install DistroCodename: zesty DistroVariant: ubuntu DkmsStatus: virtualbox, 5.1.18, 4.10.0-19-generic, x86_64: installed virtualbox, 5.1.18, 4.11.0-0-generic, x86_64: installed GraphicsCard: NVIDIA Corporation GM107 [GeForce GTX 750] [10de:1381] (rev a2) (prog-if 00 [VGA controller]) Subsystem: Gigabyte Technology Co., Ltd GM107 [GeForce GTX 750] [1458:362e] Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 002: ID 046d:c062 Logitech, Inc. M-UAS144 [LS1 Laser Mouse] Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: ASUSTEK COMPUTER INC P5W DH Deluxe ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.11.0-0-generic root=UUID=7c755ed6-51cc-4b75-88ac-9c75acf82749 ro SourcePackage: xserver-xorg-video-nouveau UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/22/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3002 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P5W DH Deluxe dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3002:bd07/22/2010:svnASUSTEKCOMPUTERINC:pnP5WDHDeluxe:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5WDHDeluxe:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: P5W DH Deluxe dmi.product.version: System Version dmi.sys.vendor: ASUSTEK COMPUTER INC version.compiz: compiz 1:0.9.13.1+17.04.20170109-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.76-1 version.libgl1-mesa-dri: libgl1-mesa-dri 17.0.3-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 17.0.3-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.19.3-1ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20170309-0ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.14-0ubuntu1 xserver.bootTime: Wed Apr 19 10:21:15 2017 xserver.configfile: default xserver.devices: input Power Button KEYBOARD, id 6 input Power Button KEYBOARD, id 7 input Logitech USB Laser Mouse MOUSE, id 8 input AT Translated Set 2 keyboard KEYBOARD, id 9 xserver.errors: Failed to load module "nvidia" (module does not exist, 0) Failed to load module "fbdev" (module does not exist, 0) Failed to load module "nvidia" (module does not exist, 0) Failed to load module "fbdev" (module does not exist, 0) xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.19.3-1ubuntu1 xserver.video_driver: nouveau To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1684123/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp