You have been subscribed to a public bug: On a system with a GeForce 6150SE integrated GPU, opening and closing the Dash a few times results in moderate or severe corruption, and eventually a complete lockup where the display is completely scrambled in a repeating pattern. When the lockup happens, the system stops responding on the network as well.
In the attached dmesg, the ttm errors seem to be the relevant ones; the MMIO errors go away when booting with "nouveau.config=PMPEG=0", while the corruption and lockups still happen. I'm also attaching the session log, which contains an interesting splat from nouveau. This happens to me in quantal and every subsequent release, while it does not happen in precise. Notably, precise does not show the problem even when running a more recent kernel (via HWE stacks). The nouveau splat mentioned "Cannot allocate memory", so I increased the RAM allocated to the integrated GPU in the BIOS setup to the maximum of 256M (the default is 128M). That seems to have fixed the problem, even if I open a lot of windows and tabs. Running the proprietary nvidia-304 driver on the same hardware, everything works fine, regardless of the VRAM setting. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: unity 7.3.1+15.04.20141216-0ubuntu1 ProcVersionSignature: Ubuntu 3.16.0-28.38-generic 3.16.7-ckt1 Uname: Linux 3.16.0-28-generic x86_64 ApportVersion: 2.15.1-0ubuntu1 Architecture: amd64 CasperVersion: 1.347 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' Date: Tue Dec 23 00:04:39 2014 DistUpgraded: Fresh install DistroCodename: vivid DistroVariant: ubuntu GraphicsCard: NVIDIA Corporation C61 [GeForce 6150SE nForce 430] [10de:03d0] (rev a2) (prog-if 00 [VGA controller]) Subsystem: Foxconn International, Inc. Device [105b:0efb] LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141222) Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 003: ID 046d:c31c Logitech, Inc. Keyboard K120 for Business Bus 002 Device 002: ID 413c:3012 Dell Computer Corp. Optical Wheel Mouse Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. ProcEnviron: TERM=linux PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: initrd=username/vivid/desktop/amd64/casper/initrd.lz boot=casper netboot=nfs nfsroot=10.0.2.1:/var/lib/tftpboot/username/vivid/desktop/amd64 quiet splash file=/cdrom/preseed/username.seed url=http://10.0.2.64/preseed/ubiquity.cfg nouveau.config=NvMSI=0 BOOT_IMAGE=username/vivid/desktop/amd64/casper/vmlinuz.efi SourcePackage: unity UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/07/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 080015 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: M61PMP/M61PMP-K dmi.board.vendor: FOXCONN dmi.board.version: 1.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080015:bd06/07/2010:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnFOXCONN:rnM61PMP/M61PMP-K:rvr1.0:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. version.compiz: compiz 1:0.9.12.0+15.04.20141219-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.58-2 version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.2-0ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.2-0ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.16.2.901-1ubuntu3 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.916+git20141119-1~exp1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2 xserver.bootTime: Mon Dec 22 16:02:40 2014 xserver.configfile: default xserver.devices: input Power Button KEYBOARD, id 6 input Power Button KEYBOARD, id 7 input Dell Dell USB Optical Mouse MOUSE, id 8 input Logitech USB Keyboard KEYBOARD, id 9 input Logitech USB Keyboard KEYBOARD, id 10 xserver.errors: Failed to load module "nvidia" (module does not exist, 0) Failed to load module "nvidia" (module does not exist, 0) xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.16.2.901-1ubuntu3 xserver.video_driver: nouveau ** Affects: unity Importance: Undecided Status: New ** Affects: xserver-xorg-video-nouveau (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug ubuntu vivid -- Dash display corruption with nouveau on GeForce 6150SE https://bugs.launchpad.net/bugs/1405024 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. _______________________________________________ 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
