Ljiljan Veselinovic, thank you for reporting this and helping make Ubuntu better. However, your crash reports are manually attached.
Please follow these instructions to have apport report a new bug about your crash that can be dealt with by the automatic retracer. First, execute at a terminal: cd /var/crash && sudo rm * ; sudo apt-get update && sudo apt-get -y dist-upgrade && sudo service apport start force_start=1 If you are running the Ubuntu Stable Release you might need to enable apport in /etc/default/apport and restart. Now reproduce the crash, then open a terminal, navigate to your /var/crash directory and file your report with: sudo ubuntu-bug /var/crash/_my_crash_report.crash where _my_crash_report.crash is the crash you would like to report. By default, this sends the crash to the Ubuntu Error Tracker infrastructure, which is different than Launchpad. For more on this, please see https://wiki.ubuntu.com/ErrorTracker . However, if after doing this you would still like to have a crash report posted to Launchpad, for example to ease triage and add others to your report, one would need to open the following file via a terminal: sudo nano /etc/apport/crashdb.conf and comment out the line: 'problem_types': ['Bug', 'Package'], by changing it to: # 'problem_types': ['Bug', 'Package'], Save, close, and file the crash report via: sudo ubuntu-bug /var/crash/_my_crash_report.crash If you do open this report, please feel free to subscribe me to it. However, I'm closing this report since the process outlined above will deal with this issue more efficiently. Also, please do not attach your crash report manually to this report and reopen it. Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** Changed in: linux (Ubuntu) Importance: Medium => Undecided ** Changed in: linux (Ubuntu) Status: Incomplete => Invalid ** Attachment removed: "_opt_google_chrome_chrome.1000.crash" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1516513/+attachment/4520289/+files/_opt_google_chrome_chrome.1000.crash ** Attachment removed: "_usr_share_software-center_software-center.1000.crash" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1516513/+attachment/4520288/+files/_usr_share_software-center_software-center.1000.crash ** Attachment removed: "_usr_bin_Xorg.0.crash.tar.gz" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1516513/+attachment/4520287/+files/_usr_bin_Xorg.0.crash.tar.gz ** Attachment removed: "_usr_bin_mediascanner-service-2.0.1000.crash" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1516513/+attachment/4520286/+files/_usr_bin_mediascanner-service-2.0.1000.crash ** Attachment removed: "_usr_bin_ibus-daemon.1000.crash" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1516513/+attachment/4520290/+files/_usr_bin_ibus-daemon.1000.crash -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1516513 Title: Display-server randomly crashing in Ubuntu 15.10 after fresh-install Status in linux package in Ubuntu: Invalid Bug description: X-org randomly restart and return me to login screen. This used to happen more often after fresh install with kernel drive 4.2.0-16, but now with 4-2-0-18 not so often. I also update BIOS to the latest version. The reasons could be: - I clicked Tools -> Options in LibreOffice - I was zooming google maps in Google Chrome - I was talking on Viber with someone The complete report of my configuration is attached. The same bug I experienced in Ubuntu 15.04 and that was the reason I decided to swich back to 14.04 LTS (no such bug). For those reasons , I tried Kubuntu 15.10 but restarting is happening there as well. The only difference is that my applications are not closed when it happens in Kubuntu. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-18-generic 4.2.0-18.22 ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3 Uname: Linux 4.2.0-18-generic x86_64 ApportVersion: 2.19.1-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ljiljan 1600 F.... pulseaudio CurrentDesktop: Unity Date: Mon Nov 16 08:02:22 2015 HibernationDevice: RESUME=UUID=49f459db-c1c1-44a3-b1f4-3b1ae5ed5147 InstallationDate: Installed on 2015-10-23 (23 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: Dell Inc. Latitude 3540 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-18-generic.efi.signed root=UUID=82557e64-97d9-487c-84b0-01d541d27c42 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-18-generic N/A linux-backports-modules-4.2.0-18-generic N/A linux-firmware 1.149.2 SourcePackage: linux UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/28/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A10 dmi.board.name: 0992HC dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A10 dmi.modalias: dmi:bvnDellInc.:bvrA10:bd01/28/2015:svnDellInc.:pnLatitude3540:pvrA10:rvnDellInc.:rn0992HC:rvrA00:cvnDellInc.:ct8:cvrA10: dmi.product.name: Latitude 3540 dmi.product.version: A10 dmi.sys.vendor: Dell Inc. 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