Simon Lambourn, thank you for reporting this and helping make Ubuntu better. As per http://www.asus.com/Motherboards/M3N78VM/HelpDesk_Download/ an update to your computer's buggy and outdated BIOS is available (1801). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?
If it doesn't, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report. Once the BIOS is updated, and the information above is provided, then please mark this report Status New. Thank you for your understanding. ** Changed in: xorg (Ubuntu) Importance: Undecided => Low ** Changed in: xorg (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1375194 Title: lightdm session constantly switches screen appearance Status in xorg package in Ubuntu: Incomplete Bug description: After installing regular software updates on 23 Sept, my screen session has become almost unusable. The screen "appearance" (font, button style, window menu bar location) alternates about twice a second between my usual settings and what I guess are the default un- decorated settings. This means that text, buttons, and input areas are often moving around on the screen as the font size changes or the window menu bar comes and goes. In addition, keyboard input characters take a variable time to appear (up to a few seconds?) and can appear in the wrong order. CPU utilisation is much higher when I am logged on. See TOP output below. I get the same problems with any one of Chromium, Firefox, Thunderbird, Ubuntu Software Centre, BASH terminal window. When I first sign on, I get a message "system software problem detected" in a panel by itself, before the desktop is displayed, and again after the desktop is displayed. This is connected with the bug, but I can't find out the details of the error. I have selected "report the problem" repeatedly. The software installed on 23 Sept included Dbus , libdbus-1-3, and dbus-x11 versions 1.6.18-0ubuntu4.2. I tried downgrading these 3 to -0ubuntu4 but the problem remained after a reboot. There were about 20-30 packages updated at the same time, including linux-image, but I can't spot which might be causing the problem. I'm using a clean install of ubuntu 14.04 but with my /home directory from an older ubuntu installation. TOP output: 24974 simon 20 0 2357692 181696 65696 R 27.6 4.5 2:34.62 software-c+ 2253 root 20 0 279028 58104 19416 S 26.6 1.4 3:19.18 Xorg 11096 simon 20 0 1391072 186192 81872 R 22.9 4.6 5:02.98 chromium-b+ 3899 simon 20 0 719408 32324 17924 R 19.9 0.8 2:55.82 hud-service 17259 simon 20 0 1036360 203656 48764 R 17.9 5.0 2:47.82 thunderbird 4291 simon 20 0 1591956 113836 41064 S 11.6 2.8 1:20.75 compiz 5857 simon 20 0 860872 76324 14440 S 5.3 1.9 1:09.93 gnome-term+ 3915 simon 20 0 590728 71048 10796 S 2.7 1.8 0:41.92 ibus-ui-gt+ 3918 simon 20 0 769636 73648 11544 S 2.7 1.8 0:42.82 unity-pane+ 4402 simon 20 0 511960 71072 12024 S 2.7 1.8 0:41.36 nm-applet 7212 simon 20 0 847244 67792 12680 S 2.7 1.7 0:37.13 update-not+ 3865 simon 20 0 666200 67632 7956 S 2.3 1.7 0:37.61 bamfdaemon 3911 simon 20 0 906492 68264 7816 S 2.3 1.7 0:38.02 gnome-sess+ 4130 simon 20 0 776980 67892 8080 S 2.3 1.7 0:36.34 indicator-+ 4146 simon 20 0 499124 66596 8156 S 2.3 1.6 0:35.04 indicator-+ 4410 simon 20 0 405976 73952 9800 S 2.3 1.8 0:34.70 smart-noti+ 4194 simon 20 0 391836 65148 7236 S 2.0 1.6 0:35.79 notify-osd ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: xorg 1:7.7+1ubuntu8 ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6 Uname: Linux 3.13.0-36-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.14.1-0ubuntu3.4 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Mon Sep 29 10:06:59 2014 DistUpgraded: Fresh install DistroCodename: trusty DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series] [1002:68f9] (prog-if 00 [VGA controller]) Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:2127] Lsusb: Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 002: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub 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 MachineType: System manufacturer System Product Name ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-36-generic root=/dev/mapper/vg1-rootfs ro nodmraid nomdmonddf nomdmonisw SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/02/2008 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0507 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: M3N78-VM dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0507:bd07/02/2008:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM3N78-VM:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer version.compiz: compiz 1:0.9.11.2+14.04.20140714-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.52-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1 version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2 xserver.bootTime: Mon Sep 29 10:05:47 2014 xserver.configfile: default xserver.devices: input Power Button KEYBOARD, id 6 input Power Button KEYBOARD, id 7 input PIXART USB OPTICAL MOUSE MOUSE, id 8 input saa7134 IR (Leadtek Winfast DTV KEYBOARD, id 9 input AT Translated Set 2 keyboard KEYBOARD, id 10 xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.15.1-0ubuntu2.1 xserver.video_driver: radeon To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1375194/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp