Since your kernel log seems to be full of wifi errors, we should exclude that as a possible cause first...
[107430.727853] ath: phy0: Failed to wakeup in 500us [107430.949391] ath: phy0: RX failed to go idle in 10 ms RXSM=0xffffffff [107430.961321] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff [107435.591709] ath: phy0: Failed to wakeup in 500us [107435.813152] ath: phy0: RX failed to go idle in 10 ms RXSM=0xffffffff [107435.825130] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff [107440.711540] ath: phy0: Failed to wakeup in 500us [107440.933340] ath: phy0: RX failed to go idle in 10 ms RXSM=0xffffffff [107440.945388] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff Please try disabling wifi and then run this command to ensure the errors are no longer occurring: dmesg -w Once confirmed the wifi errors have stopped, do you still see graphics freezes? ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete ** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1841420 Title: Xorg freeze Status in linux package in Ubuntu: Incomplete Status in xorg-server package in Ubuntu: Incomplete Bug description: Constant video freeze ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xorg 1:7.7+19ubuntu7.1 ProcVersionSignature: Ubuntu 4.15.0-58.64-generic 4.15.18 Uname: Linux 4.15.0-58-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.7 Architecture: amd64 BootLog: Error: [Errno 13] Permissão negada: '/var/log/boot.log' CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Mon Aug 26 10:17:38 2019 DistUpgraded: Fresh install DistroCodename: bionic DistroVariant: ubuntu DkmsStatus: anbox, 1, 4.15.0-55-generic, x86_64: installed anbox, 1, 4.15.0-58-generic, x86_64: installed ExtraDebuggingInterest: Yes GpuHangFrequency: I don't know GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. 3rd Gen Core processor Graphics Controller [1043:124d] Subsystem: ASUSTeK Computer Inc. GeForce GT 720M [1043:124d] InstallationDate: Installed on 2018-08-20 (370 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) MachineType: ASUSTeK COMPUTER INC. X550CC ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-58-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1 SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/26/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: X550CC.213 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: X550CC dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX550CC.213:bd06/26/2013:svnASUSTeKCOMPUTERINC.:pnX550CC:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX550CC:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: X dmi.product.name: X550CC dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.97-1ubuntu1~18.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 19.0.8-0ubuntu0~18.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx 19.0.8-0ubuntu0~18.04.1 version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.3 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1841420/+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