Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.5 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.5-wily/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1562076 Title: Ubuntu freezes a few seconds after plugin a screen Status in linux package in Ubuntu: Incomplete Bug description: Hello, I'm running the latest beta of Ubuntu 16.04 Xenial on an ASUS UX303LA (Intel i5 6200U, Intel HD 520) and each time I plug a screen, using either HDMI or Mini DisplayPort, my laptop freezes after a few seconds. Alt + Function keys doesn't work, sound stops and I'm forced to shutdown the computer by long-pressing its Power button. I attached syslog, kern.log and Xorg.0.log for further information. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-15-generic 4.4.0-15.31 ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6 Uname: Linux 4.4.0-15-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: axel 1632 F.... pulseaudio CurrentDesktop: GNOME Date: Fri Mar 25 17:34:54 2016 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=2acdb9a2-2923-4550-9019-32e79d136c4d InstallationDate: Installed on 2016-02-25 (29 days ago) InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 0bda:57cb Realtek Semiconductor Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: ASUSTeK COMPUTER INC. UX303UA ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-15-generic.efi.signed root=UUID=de727ab1-db17-453b-a371-4a143f37dcad ro noprompt persistent quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-15-generic N/A linux-backports-modules-4.4.0-15-generic N/A linux-firmware 1.157 SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-02-25 (28 days ago) dmi.bios.date: 08/27/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: UX303UA.202 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UX303UA dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: ATN12345678901234567 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX303UA.202:bd08/27/2015:svnASUSTeKCOMPUTERINC.:pnUX303UA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX303UA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.name: UX303UA dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1562076/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
