This bug appeared for months on different (previous) kernels, just I have reported it for the first time.
** Information type changed from Private Security to Public Security -- 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/1666316 Title: Windows become unclickable (transparent for mouse clicks) after resume from sleep Status in linux package in Ubuntu: New Bug description: Windows become unclickable (transparent for mouse clicks) after resume from the sleep mode. Both system and JVM windows can't capture mouse clicks including clicks on the title bar after resuming from the sleep mode. Unity panel works fine, new applications can be started and they do not have this issue, i.e. new windows are fully functional. This bug appears seldom and is hardly reproducible (like #1651520). This bug is a minor security vulnerability because clicking on the foreground non-clickable window, a user performs actual click on the background window (or desktop shortcuts) and anything can be initiated/started that the user has right, but was not intended to do. Notes: This bug might relate to #1651520 (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1651520) except in 4.4.0-62, except 1) the windows' content now is not damaged and visually indistinguishable from the fully functional windows and 2) windows in #1651520 had destroyed content, but were clickable. Neither this bug nor #1651520 appear in the 4.9.3 kernel. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-62-generic 4.4.0-62.83 ProcVersionSignature: Ubuntu 4.4.0-62.83-generic 4.4.40 Uname: Linux 4.4.0-62-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: lav 3136 F.... pulseaudio /dev/snd/controlC0: lav 3136 F.... pulseaudio CurrentDesktop: Unity Date: Mon Feb 20 21:14:20 2017 EcryptfsInUse: Yes InstallationDate: Installed on 2014-10-25 (849 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: LENOVO 20A8S28400 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-62-generic root=UUID=daa4b3a5-47b3-4c16-a1de-2dde0c540c4a ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-62-generic N/A linux-backports-modules-4.4.0-62-generic N/A linux-firmware 1.157.8 SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-09-11 (162 days ago) dmi.bios.date: 06/06/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GRET39WW (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: 20A8S28400 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGRET39WW(1.16):bd06/06/2014:svnLENOVO:pn20A8S28400:pvrThinkPadX1Carbon2nd:rvnLENOVO:rn20A8S28400:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20A8S28400 dmi.product.version: ThinkPad X1 Carbon 2nd dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1666316/+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
