Thank you for taking the time to report this issue and helping to make Ubuntu better.
Examining the information you have given us, I see many hardware issues and wonder if you have a faulty power supply (thus possibly your disk issues, plus the video flickering issues), and suggest you check that out. For example this appears over & over again :- [ 1576.177440] ata1.00: configured for UDMA/133 [ 1576.177458] sd 0:0:0:0: [sda] tag#4 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [ 1576.177464] sd 0:0:0:0: [sda] tag#4 Sense Key : Medium Error [current] [descriptor] [ 1576.177468] sd 0:0:0:0: [sda] tag#4 Add. Sense: Unrecovered read error - auto reallocate failed [ 1576.177473] sd 0:0:0:0: [sda] tag#4 CDB: Read(10) 28 00 3f 0e 8c 00 00 00 08 00 [ 1576.177477] blk_update_request: I/O error, dev sda, sector 1057917952 This bug report can be converted to a question (which is aimed at support). You can also find help with your problem in the support forum of your local Ubuntu community http://loco.ubuntu.com/ or asking at https://askubuntu.com or https://ubuntuforums.org, or for more support options please look at https://discourse.ubuntu.com/t/community- support/709 I've marked this bug incomplete as normal support steps don't appear to have been tried, or evidence of them hasn't been provided. If you believe I'm in error, or can provide additional detail of steps done, please change status back to "New" and leave comment, or additional information as to what was attempted. Thanks again for helping make Ubuntu better. ** Changed in: xorg (Ubuntu) Status: New => Incomplete -- 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/1844609 Title: my screen flickering Status in xorg package in Ubuntu: Incomplete Bug description: my screen flickering ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3.1 ProcVersionSignature: Ubuntu 4.4.0-145.171-generic 4.4.176 Uname: Linux 4.4.0-145-generic i686 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.18 Architecture: i386 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Thu Sep 19 08:21:46 2019 DistUpgraded: 2019-04-13 18:00:45,594 ERROR found exception: 'E:Sub-process /usr/bin/dpkg returned an error code (1), E:Sub-process /usr/bin/dpkg returned an error code (1)' DistroCodename: xenial DistroVariant: ubuntu DkmsStatus: nvidia-304, 304.135, 4.4.0-142-generic, i686: installed nvidia-304, 304.135, 4.4.0-145-generic, i686: installed GraphicsCard: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller]) Subsystem: Dell Haswell-ULT Integrated Graphics Controller [1028:0651] InstallationDate: Installed on 2016-08-30 (1114 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417) MachineType: Dell Inc. Inspiron 3542 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-145-generic root=UUID=bde73db5-64dd-43a8-ae3d-32ce5c3ed7d4 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: Upgraded to xenial on 2019-04-13 (158 days ago) dmi.bios.date: 05/27/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A03 dmi.board.name: 0KHNVP dmi.board.vendor: Dell Inc. dmi.board.version: A03 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvrA03:bd05/27/2014:svnDellInc.:pnInspiron3542:pvrNotSpecified:rvnDellInc.:rn0KHNVP:rvrA03:cvnDellInc.:ct8:cvrNotSpecified: dmi.product.name: Inspiron 3542 dmi.product.version: Not Specified dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.12.3+16.04.20180221-0ubuntu1 version.libdrm2: libdrm2 2.4.91-2~16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~16.04.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~16.04.1 version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.3 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2 xserver.bootTime: Thu Sep 19 07:39:29 2019 xserver.configfile: default xserver.errors: /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied xserver.logfile: /var/log/Xorg.0.log xserver.outputs: product id 16620 vendor AUO xserver.version: 2:1.18.4-0ubuntu0.8 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1844609/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
