I actually am having the exact same problem, right down to the lead-up. After resuming from suspend I found myself unable to connect to wireless networks, so I tried restarting networking with 'service networking restart'. lightdm and everything under it immediately went down hard. I was able to get to a VT, and when I tried to 'service lightdm start', the computer stopped responding to keyboard input, and shut down when I tapped the power button. Upon restarting, I tried to restart networking immediately after logging in, and the window manager ended up trapped in a restart loop. I then tried booting to the login screen, switching to a VT, stopping lightdm, restarting networking, and starting lightdm, but lightdm fails to start.
Cursory examination of the logs provided by the original reporter indicate that our hardware is radically different. This leads me to be skeptical of the memory hardware diagnosis. It seems outlandishly improbable that two completely different computers would experience reproducible corruption of the same byte of kernel memory without any other discernable memory errors. This is 100% reproducible on my system. Do you need anything from me? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1235516 Title: service networking restart causes Xorg crash Status in “xorg-server” package in Ubuntu: New Bug description: NetworkManager stopped being able to connect to Wi-Fi access points, so I attempted to restart it. There was no /etc/init.d/network-manager script (presumably removed during the upgrade to Saucy), so I ran: service networking restart This caused all GUI programs to be killed (several left crash logs, which I did not submit to Launchpad for obvious reasons), leaving me with just a wallpaper and a mouse pointer, still moveable. Attempting to switch to a VT displayed first a black screen with the classic X pointer, then finally a VT, but the system became unresponsive to any key. Pressing the power button caused the system to shut down. This is how the end of syslog looks: Oct 5 09:14:23 hostname dbus[393]: [system] Successfully activated service 'org.freedesktop.login1' Oct 5 09:14:23 hostname whoopsie[996]: Could not get the list of active connections: GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus) Oct 5 09:14:23 hostname modem-manager[656]: <info> Caught signal 15, shutting down... Oct 5 09:14:23 hostname whoopsie[29365]: whoopsie 0.2.23 starting up. Oct 5 09:14:23 hostname whoopsie[29365]: Using lock path: /var/lock/whoopsie/lock Oct 5 09:14:23 hostname whoopsie[29366]: Could not connect to the system bus: Could not connect: No such file or directory Oct 5 09:14:23 hostname ntpdate[29407]: Can't find host ntp.ubuntu.com: Name or service not known (-2) Oct 5 09:14:23 hostname ntpdate[29407]: no servers can be used, exiting Oct 5 09:14:36 hostname kernel: [170242.480128] usb 6-2: USB disconnect, device number 2 Oct 5 09:14:47 hostname acpid: client 1031[0:0] has disconnected Oct 5 09:14:47 hostname acpid: client connected from 1031[0:0] Oct 5 09:14:47 hostname acpid: 1 client rule loaded Oct 5 09:15:01 hostname CRON[29460]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1) Oct 5 09:15:04 hostname kernel: [170270.268321] [drm:intel_enable_lvds] *ERROR* timed out waiting for panel to power on ProblemType: Crash DistroRelease: Ubuntu 13.10 Package: xserver-xorg-video-intel 2:2.99.903-0ubuntu1 ProcVersionSignature: Ubuntu 3.11.0-11.17-generic 3.11.3 Uname: Linux 3.11.0-9-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.12.5-0ubuntu1 Architecture: amd64 Chipset: gm45 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true Date: Wed Oct 2 19:49:29 2013 DistUpgraded: 2013-10-02 08:02:08,593 DEBUG enabling apt cron job DistroCodename: saucy DistroVariant: ubuntu DuplicateSignature: [gm45] GPU lockup IPEHR: 0x0a8da72e Ubuntu 13.10 ExecutablePath: /usr/share/apport/apport-gpu-error-intel.py ExtraDebuggingInterest: Yes GpuHangFrequency: This is the first time GraphicsCard: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Acer Incorporated [ALI] Device [1025:029b] Subsystem: Acer Incorporated [ALI] Device [1025:029b] InstallationDate: Installed on 2013-04-15 (172 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130413) InterpreterPath: /usr/bin/python3.3 MachineType: Acer Aspire 1810T MarkForUpload: True ProcCmdline: /usr/bin/python3 /usr/share/apport/apport-gpu-error-intel.py ProcEnviron: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-11-generic root=UUID=d74ea524-a93a-4851-9da7-fef5443fd44b ro quiet splash vt.handoff=7 RelatedPackageVersions: xserver-xorg 1:7.7+1ubuntu5 libdrm2 2.4.46-1 xserver-xorg-video-intel 2:2.21.14-4ubuntu4 SourcePackage: xserver-xorg-video-intel Title: [gm45] GPU lockup IPEHR: 0x0a8da72e UpgradeStatus: Upgraded to saucy on 2013-10-01 (3 days ago) UserGroups: dmi.bios.date: 08/31/2010 dmi.bios.vendor: INSYDE dmi.bios.version: v1.3314 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: JM11-MS dmi.board.vendor: Acer dmi.board.version: Base Board Version dmi.chassis.type: 1 dmi.chassis.vendor: Chassis Manufacturer dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnINSYDE:bvrv1.3314:bd08/31/2010:svnAcer:pnAspire1810T:pvrv1.3314:rvnAcer:rnJM11-MS:rvrBaseBoardVersion:cvnChassisManufacturer:ct1:cvrChassisVersion: dmi.product.name: Aspire 1810T dmi.product.version: v1.3314 dmi.sys.vendor: Acer version.compiz: compiz 1:0.9.10+13.10.20131004-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.46-1 version.libgl1-mesa-dri: libgl1-mesa-dri 9.2-1ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.2-1ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.14.3-3ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu9 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.903-0ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1 xserver.bootTime: Sat Oct 5 09:16:44 2013 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 4352 vendor CMO xserver.version: 2:1.14.3-3ubuntu1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1235516/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
