Just have sent info from the second host (Intel+NVidia; more prone to the issue). Will do it for the first host in a few hours.
Please notice that apport-collect is somewhat broken - 1) it didn't request dependence on python-qt5 but needs it for run time; 2) it just created a dialog window "Text. Yes? No?", i.e. without real question. I had to blindly answer "yes". -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1749150 Title: Spontaneous single window freezing Status in xorg package in Ubuntu: Incomplete Bug description: Sometimes a window stopped refreshing its contents. Different applications affected: known examples include xterm, Firefox, CodeBlocks, KDE lock screen. No way found to revive in-time refreshing except full window closing (or blind login, in case of KDE lock screen). Keyboard or mouse activity in a such window doesn't help. A one-shot refresh can be easily caused by switching to another virtual desktop and then back. After such switching, a window refresh is active for approximately 0.5 seconds, then stops again. No relation to host uptime or X session uptime is visible. Observed on two different hosts, both carrying Kubuntu 16.04 and running XWindow+KDE as desktop environment. KDE is standard Kubuntu one. Multiple virtual desktops are used on both hosts. The issue started to appear approximately 4-5 months ago but I can't specify exact package change that could have caused it. Both hosts are regularly updated (no more than 1 week delay). The first host has: video: 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Turks XT [Radeon HD 6670/7670] (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Turks XT [Radeon HD 6670/7670] Kernel driver in use: radeon Kernel modules: radeon CPU: AMD FX-8150 RAM: 16GB Installed as Kubuntu 14.04, upgraded to 16.04 via do-release-upgrade. current kernel: linux-image-4.4.0-112-generic video packages: non-HWE series (e.g. xserver-xorg=1:7.7+13ubuntu3); active driver: radeon Issue rate on this host is rather tiny (~1 per week). The second one has: video: 01:00.0 VGA compatible controller: NVIDIA Corporation Device 128b (rev a1) (prog-if 00 [VGA controller]) Subsystem: Micro-Star International Co., Ltd. [MSI] Device 8c93 Kernel driver in use: nvidia Kernel modules: nvidiafb, nouveau, nvidia_384_drm, nvidia_384 (really this is GeForce GT 740) CPU:Intel i3-4170 RAM: 16GB Installed originally as Kubuntu 16.04 current kernel: linux-image-4.13.0-32-generic (depended on by linux-generic-hwe-16.04) video packages: HWE series (e.g. xserver-xorg-hwe-16.04=1:7.7+16ubuntu3~16.04.1); active driver: nvidia (proprietary), but the same issue observed with VESA driver. Issue rate on this host is 1-2 per day and was much higher with VESA driver in use. No respective messages are found in Xorg.*.log or ~/.xsession-errors, but the latter has got stream of messages like: at host with AMD and Radeon: kscreen: Primary output changed from KScreen::Output(Id: 86 , Name: "HDMI-0" ) ( "HDMI-0" ) to KScreen::Output(Id: 86 , Name: "HDMI-0" ) ( "HDMI-0" ) kscreen: Primary output changed from KScreen::Output(Id: 86 , Name: "HDMI-0" ) ( "HDMI-0" ) to KScreen::Output(Id: 86 , Name: "HDMI-0" ) ( "HDMI-0" ) at host with Intel and Nvidia: kscreen: Primary output changed from KScreen::Output(Id: 640 , Name: "DVI-D-0" ) ( "DVI-D-0" ) to KScreen::Output(Id: 640 , Name: "DVI-D-0" ) ( "DVI-D-0" ) kscreen: Primary output changed from KScreen::Output(Id: 640 , Name: "DVI-D-0" ) ( "DVI-D-0" ) to KScreen::Output(Id: 640 , Name: "DVI-D-0" ) ( "DVI-D-0" ) such messages started appearing approximately at the same time, plus- minus 1-2 months. Additional info can be provided on demand. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xserver-xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-112.135-generic 4.4.98 Uname: Linux 4.4.0-112-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 CurrentDesktop: KDE Date: Tue Feb 13 11:47:32 2018 InstallationDate: Installed on 2014-12-16 (1154 days ago) InstallationMedia: Kubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) SourcePackage: xorg UpgradeStatus: Upgraded to xenial on 2017-03-29 (321 days ago) --- .proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: u'/proc/driver/nvidia/gpus/0000:01:00.0' .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 384.111 Tue Dec 19 23:51:45 PST 2017 GCC version: gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.5) .proc.driver.nvidia.warnings.fbdev: Your system is not currently configured to drive a VGA console on the primary VGA device. The NVIDIA Linux graphics driver requires the use of a text-mode VGA console. Use of other console drivers including, but not limited to, vesafb, may result in corruption and stability problems, and is not supported. ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: KDE DistUpgraded: Fresh install DistroCodename: xenial DistroRelease: Ubuntu 16.04 DistroVariant: kubuntu GraphicsCard: NVIDIA Corporation Device [10de:128b] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:8c93] InstallationDate: Installed on 2017-10-29 (107 days ago) InstallationMedia: Kubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801) MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia Package: xorg 1:7.7+13ubuntu3 PackageArchitecture: amd64 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-32-generic root=UUID=2618a695-bc73-4e0a-a71d-1b781d7ad850 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.13.0-32.35~16.04.1-generic 4.13.13 Tags: xenial kubuntu Uname: Linux 4.13.0-32-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip disk lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 07/27/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P2.40 dmi.board.name: B85M Pro4 dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.40:bd07/27/2015:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnB85MPro4:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: To Be Filled By O.E.M. dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. version.compiz: compiz N/A version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.83-1~16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.4-0ubuntu1~16.04.4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.4-0ubuntu1~16.04.4 version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1749150/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp