I thank you a lot for your answer
AFTER :journalctl -b 0 the following lines repeated a lot of times!!! -- Logs begin at Δευ 2019-12-16 17:31:07 EET, end at Δευ 2019-12-16 19:27:48 EET. -- Δεκ 16 17:31:07 f-Lenovo-G50-30 systemd-journald[246]: Runtime journal (/run/log/journal/) is 8.0M, m Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: microcode: microcode updated early to revision 0x838, date = Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: Linux version 4.15.0-72-generic (buildd@lcy01-amd64-023) (gcc Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-4.15.0-72-generic root Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: KERNEL supported cpus: Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: Intel GenuineIntel Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: AMD AuthenticAMD Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: Centaur CentaurHauls Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: x86/fpu: x87 FPU will use FXSAVE Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: e820: BIOS-provided physical RAM map: Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: BIOS-e820: [mem 0x0000000000000000-0x000000000006efff] usable Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: BIOS-e820: [mem 0x000000000006f000-0x000000000006ffff] ACPI N Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: BIOS-e820: [mem 0x0000000000070000-0x0000000000085fff] usable Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: BIOS-e820: [mem 0x0000000000086000-0x000000000009ffff] reserv Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: BIOS-e820: [mem 0x0000000000100000-0x000000001fffffff] usable Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: BIOS-e820: [mem 0x0000000020000000-0x00000000200fffff] reserv Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: BIOS-e820: [mem 0x0000000020100000-0x0000000078235fff] usable Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: BIOS-e820: [mem 0x0000000078236000-0x00000000784b4fff] reserv Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: BIOS-e820: [mem 0x00000000784b5000-0x0000000078544fff] type 2 Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: BIOS-e820: [mem 0x0000000078545000-0x0000000078b44fff] reserv Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: BIOS-e820: [mem 0x0000000078b45000-0x0000000078c44fff] ACPI N Δεκ 16 17:31:07 f-Lenovo-G50-30 kernel: BIOS-e820: [mem 0x0000000078c45000-0x0000000078c84fff] ACPI d lines 1-23 AFTER: gsettings get org.gnome.desktop.interface icon-theme 'ubuntu-mono-dark' AFTER : dpkg -l | grep icon ii adwaita-icon-theme 3.18.0+p16.04+git20170914.0754 all dummy package to replace default icon theme of GNOME ii hicolor-icon-theme 0.15-0ubuntu1.1 all default fallback theme for FreeDesktop.org icon themes ii humanity-icon-theme 0.6.10.1 all Humanity Icon theme ii libtext-iconv-perl 1.7-5build4 amd64 converts between character sets in Perl ii notify-osd-icons 0.8+15.10.20151016.2-0ubuntu1 all Notify-OSD icons ii suru-icon-theme 14.04+16.04.20180326-0ubuntu1 all Ubuntu Suru Icon theme ii ubuntu-mobile-icons 14.04+16.04.20180326-0ubuntu1 all Ubuntu Mobile Icon theme f@f-Lenovo-G50-30:~$ That's all thank you again -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gtk+3.0 in Ubuntu. https://bugs.launchpad.net/bugs/1856592 Title: modified graphic of progrwms Status in gtk+3.0 package in Ubuntu: Incomplete Bug description: in some programs th little icons that allow to undo or redo or the icons that allow to go up or down appear like some little squares! I don't know how can I solve this problem! ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3.1 ProcVersionSignature: Ubuntu 4.15.0-72.81~16.04.1-generic 4.15.18 Uname: Linux 4.15.0-72-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.21 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true Date: Mon Dec 16 17:40:38 2019 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu GraphicsCard: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display [8086:0f31] (rev 0e) (prog-if 00 [VGA controller]) Subsystem: Lenovo Atom Processor Z36xxx/Z37xxx Series Graphics & Display [17aa:3905] InstallationDate: Installed on 2019-12-07 (8 days ago) InstallationMedia: Ubuntu 16.04.6 LTS "Xenial Xerus" - Release amd64 (20190227) MachineType: LENOVO 80G0 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-72-generic root=UUID=42ddfb90-969c-4976-998c-893d136068bb ro splash quiet pci=nomsi RESUME=UUID=92781adb-f2a6-4f15-88fc-e1ce801291dd vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/22/2015 dmi.bios.vendor: LENOVO dmi.bios.version: A7CN45WW dmi.board.asset.tag: NO Asset Tag dmi.board.name: Lancer 5A6 dmi.board.vendor: LENOVO dmi.board.version: NANANANANO DPK dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo G50-30 dmi.modalias: dmi:bvnLENOVO:bvrA7CN45WW:bd01/22/2015:svnLENOVO:pn80G0:pvrLenovoG50-30:rvnLENOVO:rnLancer5A6:rvrNANANANANODPK:cvnLENOVO:ct10:cvrLenovoG50-30: dmi.product.family: IDEAPAD dmi.product.name: 80G0 dmi.product.version: Lenovo G50-30 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12.3+16.04.20180221-0ubuntu1 version.ia32-libs: ia32-libs N/A 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 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 xserver.bootTime: Mon Dec 16 17:31:25 2019 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.19.6-1ubuntu4.1~16.04.2 xserver.video_driver: modeset To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1856592/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp