Public bug reported:

I had same problem in Ubuntu 16.04.3. But not frequent. It was happening
when I play HD video. But now after installing Ubuntu 18.04 the same
problem even when browsing. Its too frequent.

I have tried to reinstall Intel-microcode, bumblebee, xorg video
drivers. No improvement.

The system don't crash even show error message in dmesg and journalctl.

aravind@comp:~$ lspci
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor 
Host Bridge/DRAM Registers (rev 02)
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02)
00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI 
Controller (rev 21)
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP 
Thermal subsystem (rev 21)
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial 
IO I2C Controller #0 (rev 21)
00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI 
#1 (rev 21)
00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller 
[AHCI mode] (rev 21)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port 
(rev f1)
00:1d.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #9 
(rev f1)
00:1d.2 PCI bridge: Intel Corporation Device 9d1a (rev f1)
00:1d.3 PCI bridge: Intel Corporation Device 9d1b (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-LP LPC Controller (rev 21)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
01:00.0 3D controller: NVIDIA Corporation Device 179c (rev ff)
03:00.0 Network controller: Qualcomm Atheros QCA9377 802.11ac Wireless Network 
Adapter (rev 31)
04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTL8411B PCI 
Express Card Reader (rev 01)
04:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 
PCI Express Gigabit Ethernet Controller (rev 12)


aravind@comp:~$ sudo lshw
[sudo] password for aravind: 
comp                        
    description: Notebook
    product: Aspire E5-575G (Aspire E5-575G_115F_1.25)
    vendor: Acer
    version: V1.25
    serial: NXGDWSI034717145457600
    width: 64 bits
    capabilities: smbios-3.0 dmi-3.0 smp vsyscall32
    configuration: chassis=notebook family=KBL sku=Aspire E5-575G_115F_1.25 
uuid=BB9943DA-A143-49C0-8D00-A81E84883CFD
  *-core
       description: Motherboard
       product: Ironman_SK
       vendor: Acer
       physical id: 0
       version: V1.25
       serial: NBGD411006717145457600
       slot: Type2 - Board Chassis Location
     *-firmware
          description: BIOS
          vendor: Insyde Corp.
          physical id: 0
          version: V1.25
          date: 03/03/2017
          size: 128KiB
          capacity: 4544KiB
          capabilities: pci upgrade shadowing cdboot bootselect edd 
int13floppynec int13floppytoshiba int13floppy360 int13floppy1200 int13floppy720 
int13floppy2880 int9keyboard int10video acpi usb biosbootspecification uefi
     *-cpu
          description: CPU
          product: Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz
          vendor: Intel Corp.
          physical id: 4
          bus info: cpu@0
          version: Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz
          serial: To Be Filled By O.E.M.
          slot: U3E1
          size: 799MHz
          capacity: 4005MHz
          width: 64 bits
          clock: 100MHz
          capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce 
cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss 
ht tm pbe syscall nx pdpe1gb rdtscp constant_tsc art arch_perfmon pebs bts 
rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni 
pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid 
sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand 
lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb 
stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep 
bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec 
xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp 
flush_l1d cpufreq
          configuration: cores=2 enabledcores=2 threads=4
        *-cache:0
             description: L1 cache
             physical id: 5
             slot: L1 Cache
             size: 128KiB
             capacity: 128KiB
             capabilities: synchronous internal write-back unified
             configuration: level=1
        *-cache:1
             description: L2 cache
             physical id: 6
             slot: L2 Cache
             size: 512KiB
             capacity: 512KiB
             capabilities: synchronous internal write-back unified
             configuration: level=2
        *-cache:2
             description: L3 cache
             physical id: 7
             slot: L3 Cache
             size: 3MiB
             capacity: 3MiB
             capabilities: synchronous internal write-back unified
             configuration: level=3
     *-memory
          description: System Memory
          physical id: d
          slot: System board or motherboard
          size: 8GiB
        *-bank:0
             description: SODIMM DDR4 Synchronous 2133 MHz (0.5 ns)
             product: AO1P21FC4R1-B2MS
             vendor: Fujitsu
             physical id: 0
             serial: 7F0E0200
             slot: ChannelA-DIMM0
             size: 4GiB
             width: 64 bits
             clock: 2133MHz (0.5ns)
        *-bank:1
             description: [empty]
             physical id: 1
             slot: ChannelA-DIMM1
        *-bank:2
             description: SODIMM DDR4 Synchronous 2133 MHz (0.5 ns)
             product: V01D4S84GB5285282133
             vendor: 0000
             physical id: 2
             serial: 00000000
             slot: ChannelB-DIMM0
             size: 4GiB
             width: 64 bits
             clock: 2133MHz (0.5ns)
        *-bank:3
             description: [empty]
             physical id: 3
             slot: ChannelB-DIMM1
     *-pci
          description: Host bridge
          product: Intel Corporation
          vendor: Intel Corporation
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 02
          width: 32 bits
          clock: 33MHz
        *-display
             description: VGA compatible controller
             product: Intel Corporation
             vendor: Intel Corporation
             physical id: 2
             bus info: pci@0000:00:02.0
             version: 02
             width: 64 bits
             clock: 33MHz
             capabilities: pciexpress msi pm vga_controller bus_master cap_list 
rom
             configuration: driver=i915 latency=0
             resources: irq:130 memory:b2000000-b2ffffff 
memory:c0000000-cfffffff ioport:5000(size=64) memory:c0000-dffff
        *-usb
             description: USB controller
             product: Sunrise Point-LP USB 3.0 xHCI Controller
             vendor: Intel Corporation
             physical id: 14
             bus info: pci@0000:00:14.0
             version: 21
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi xhci bus_master cap_list
             configuration: driver=xhci_hcd latency=0
             resources: irq:126 memory:b4500000-b450ffff
           *-usbhost:0
                product: xHCI Host Controller
                vendor: Linux 4.15.0-34-generic xhci-hcd
                physical id: 0
                bus info: usb@1
                logical name: usb1
                version: 4.15
                capabilities: usb-2.00
                configuration: driver=hub slots=12 speed=480Mbit/s
              *-usb:0
                   description: Mouse
                   product: USB Optical Mouse
                   vendor: PixArt
                   physical id: 1
                   bus info: usb@1:1
                   version: 1.00
                   capabilities: usb-2.00
                   configuration: driver=usbhid maxpower=100mA speed=2Mbit/s
              *-usb:1
                   description: Bluetooth wireless interface
                   vendor: Lite-On Technology Corp.
                   physical id: 5
                   bus info: usb@1:5
                   version: 0.01
                   capabilities: bluetooth usb-2.01
                   configuration: driver=btusb maxpower=100mA speed=12Mbit/s
              *-usb:2
                   description: Video
                   product: HD WebCam
                   vendor: Generic
                   physical id: 7
                   bus info: usb@1:7
                   version: 0.07
                   serial: 200901010001
                   capabilities: usb-2.00
                   configuration: driver=uvcvideo maxpower=500mA speed=480Mbit/s
           *-usbhost:1
                product: xHCI Host Controller
                vendor: Linux 4.15.0-34-generic xhci-hcd
                physical id: 1
                bus info: usb@2
                logical name: usb2
                version: 4.15
                capabilities: usb-3.00
                configuration: driver=hub slots=6 speed=5000Mbit/s
        *-generic:0
             description: Signal processing controller
             product: Sunrise Point-LP Thermal subsystem
             vendor: Intel Corporation
             physical id: 14.2
             bus info: pci@0000:00:14.2
             version: 21
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list
             configuration: driver=intel_pch_thermal latency=0
             resources: irq:18 memory:b452a000-b452afff
        *-generic:1
             description: Signal processing controller
             product: Sunrise Point-LP Serial IO I2C Controller #0
             vendor: Intel Corporation
             physical id: 15
             bus info: pci@0000:00:15.0
             version: 21
             width: 64 bits
             clock: 33MHz
             capabilities: pm bus_master cap_list
             configuration: driver=intel-lpss latency=0
             resources: irq:16 memory:b452b000-b452bfff
        *-communication
             description: Communication controller
             product: Sunrise Point-LP CSME HECI #1
             vendor: Intel Corporation
             physical id: 16
             bus info: pci@0000:00:16.0
             version: 21
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list
             configuration: driver=mei_me latency=0
             resources: irq:131 memory:b452c000-b452cfff
        *-storage
             description: SATA controller
             product: Sunrise Point-LP SATA Controller [AHCI mode]
             vendor: Intel Corporation
             physical id: 17
             bus info: pci@0000:00:17.0
             version: 21
             width: 32 bits
             clock: 66MHz
             capabilities: storage msi pm ahci_1.0 bus_master cap_list
             configuration: driver=ahci latency=0
             resources: irq:127 memory:b4528000-b4529fff 
memory:b452f000-b452f0ff ioport:5080(size=8) ioport:5088(size=4) 
ioport:5060(size=32) memory:b452d000-b452d7ff
        *-pci:0
             description: PCI bridge
             product: Intel Corporation
             vendor: Intel Corporation
             physical id: 1c
             bus info: pci@0000:00:1c.0
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master 
cap_list
             configuration: driver=pcieport
             resources: irq:122 ioport:4000(size=4096) memory:b3000000-b40fffff 
ioport:a0000000(size=301989888)
           *-generic UNCLAIMED
                description: Unassigned class
                product: Illegal Vendor ID
                vendor: Illegal Vendor ID
                physical id: 0
                bus info: pci@0000:01:00.0
                version: ff
                width: 32 bits
                clock: 66MHz
                capabilities: bus_master vga_palette cap_list
                configuration: latency=255 maxlatency=255 mingnt=255
                resources: memory:b3000000-b3ffffff memory:a0000000-afffffff 
memory:b0000000-b1ffffff ioport:4000(size=128) memory:b4000000-b407ffff
        *-pci:1
             description: PCI bridge
             product: Sunrise Point-LP PCI Express Root Port #9
             vendor: Intel Corporation
             physical id: 1d
             bus info: pci@0000:00:1d.0
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master 
cap_list
             configuration: driver=pcieport
             resources: irq:123 ioport:6000(size=4096) memory:90100000-902fffff 
ioport:90300000(size=2097152)
        *-pci:2
             description: PCI bridge
             product: Intel Corporation
             vendor: Intel Corporation
             physical id: 1d.2
             bus info: pci@0000:00:1d.2
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master 
cap_list
             configuration: driver=pcieport
             resources: irq:124 memory:b4200000-b43fffff
           *-network
                description: Wireless interface
                product: QCA9377 802.11ac Wireless Network Adapter
                vendor: Qualcomm Atheros
                physical id: 0
                bus info: pci@0000:03:00.0
                logical name: wlp3s0
                version: 31
                serial: 3c:a0:67:c1:05:d9
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list ethernet 
physical wireless
                configuration: broadcast=yes driver=ath10k_pci 
driverversion=4.15.0-34-generic firmware=WLAN.TF.1.0-00002-QCATFSWPZ-5 
ip=192.168.0.105 latency=0 link=yes multicast=yes wireless=IEEE 802.11
                resources: irq:132 memory:b4200000-b43fffff
        *-pci:3
             description: PCI bridge
             product: Intel Corporation
             vendor: Intel Corporation
             physical id: 1d.3
             bus info: pci@0000:00:1d.3
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master 
cap_list
             configuration: driver=pcieport
             resources: irq:125 ioport:3000(size=4096) memory:b4400000-b44fffff
           *-generic
                description: Unassigned class
                product: RTL8411B PCI Express Card Reader
                vendor: Realtek Semiconductor Co., Ltd.
                physical id: 0
                bus info: pci@0000:04:00.0
                version: 01
                width: 32 bits
                clock: 33MHz
                capabilities: pm msi pciexpress msix vpd bus_master cap_list rom
                configuration: driver=rtsx_pci latency=0
                resources: irq:129 memory:b4405000-b4405fff 
memory:b4410000-b441ffff
           *-network
                description: Ethernet interface
                product: RTL8111/8168/8411 PCI Express Gigabit Ethernet 
Controller
                vendor: Realtek Semiconductor Co., Ltd.
                physical id: 0.1
                bus info: pci@0000:04:00.1
                logical name: enp4s0f1
                version: 12
                serial: a8:1e:84:88:3c:fd
                size: 10Mbit/s
                capacity: 1Gbit/s
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress msix vpd bus_master cap_list 
ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd 
autonegotiation
                configuration: autonegotiation=on broadcast=yes driver=r8169 
driverversion=2.3LK-NAPI duplex=half firmware=rtl8411-2_0.0.1 07/08/13 
latency=0 link=no multicast=yes port=MII speed=10Mbit/s
                resources: irq:19 ioport:3000(size=256) 
memory:b4404000-b4404fff memory:b4400000-b4403fff
        *-isa
             description: ISA bridge
             product: Intel Corporation
             vendor: Intel Corporation
             physical id: 1f
             bus info: pci@0000:00:1f.0
             version: 21
             width: 32 bits
             clock: 33MHz
             capabilities: isa bus_master
             configuration: latency=0
        *-memory UNCLAIMED
             description: Memory controller
             product: Sunrise Point-LP PMC
             vendor: Intel Corporation
             physical id: 1f.2
             bus info: pci@0000:00:1f.2
             version: 21
             width: 32 bits
             clock: 33MHz (30.3ns)
             capabilities: bus_master
             configuration: latency=0
             resources: memory:b4524000-b4527fff
        *-multimedia
             description: Audio device
             product: Intel Corporation
             vendor: Intel Corporation
             physical id: 1f.3
             bus info: pci@0000:00:1f.3
             version: 21
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list
             configuration: driver=snd_hda_intel latency=32
             resources: irq:133 memory:b4520000-b4523fff 
memory:b4510000-b451ffff
        *-serial UNCLAIMED
             description: SMBus
             product: Sunrise Point-LP SMBus
             vendor: Intel Corporation
             physical id: 1f.4
             bus info: pci@0000:00:1f.4
             version: 21
             width: 64 bits
             clock: 33MHz
             configuration: latency=0
             resources: memory:b452e000-b452e0ff ioport:5040(size=32)
     *-scsi:0
          physical id: 1
          logical name: scsi0
          capabilities: emulated
        *-disk
             description: ATA Disk
             product: ST1000LM035-1RK1
             vendor: Seagate
             physical id: 0.0.0
             bus info: scsi@0:0.0.0
             logical name: /dev/sda
             version: ACM1
             serial: WDE2XTM0
             size: 931GiB (1TB)
             capabilities: gpt-1.00 partitioned partitioned:gpt
             configuration: ansiversion=5 
guid=6376fc0c-9935-4ecd-ad18-259def4aed3a logicalsectorsize=512 sectorsize=4096
           *-volume:0
                description: BIOS Boot partition
                vendor: EFI
                physical id: 1
                bus info: scsi@0:0.0.0,1
                logical name: /dev/sda1
                serial: c64347eb-fa4e-4326-b09f-dc1f8b5a96e6
                capacity: 9764MiB
                capabilities: nofs
           *-volume:1
                description: Linux swap volume
                vendor: Linux
                physical id: 2
                bus info: scsi@0:0.0.0,2
                logical name: /dev/sda2
                version: 1
                serial: af233857-e919-4cbf-ab84-f09b9f7d6635
                size: 9763MiB
                capacity: 9765MiB
                capabilities: nofs swap initialized
                configuration: filesystem=swap pagesize=4095
           *-volume:2
                description: EXT4 volume
                vendor: Linux
                physical id: 3
                bus info: scsi@0:0.0.0,3
                logical name: /dev/sda3
                logical name: /
                version: 1.0
                serial: 24c65739-051c-489c-8021-ceba239a1286
                size: 66GiB
                capabilities: journaled extended_attributes large_files 
huge_files dir_nlink recover extents ext4 ext2 initialized
                configuration: created=2018-04-01 06:18:41 filesystem=ext4 
lastmountpoint=/ modified=2018-09-30 18:05:05 mount.fstype=ext4 
mount.options=rw,relatime,errors=remount-ro,data=ordered mounted=2018-09-30 
18:05:11 state=mounted
           *-volume:3
                description: EXT4 volume
                vendor: Linux
                physical id: 4
                bus info: scsi@0:0.0.0,4
                logical name: /dev/sda4
                logical name: /home
                version: 1.0
                serial: 06b04e10-0ca8-48e5-a65d-18d8f54f39f8
                size: 846GiB
                capabilities: journaled extended_attributes large_files 
huge_files dir_nlink recover extents ext4 ext2 initialized
                configuration: created=2017-08-04 19:22:46 filesystem=ext4 
lastmountpoint=/home modified=2018-09-30 18:05:44 mount.fstype=ext4 
mount.options=rw,relatime,data=ordered mounted=2018-09-30 18:05:44 state=mounted
     *-scsi:1
          physical id: 2
          logical name: scsi1
          capabilities: emulated
        *-cdrom
             description: DVD-RAM writer
             product: DVD A  DA8AESH
             vendor: Slimtype
             physical id: 0.0.0
             bus info: scsi@1:0.0.0
             logical name: /dev/cdrom
             logical name: /dev/cdrw
             logical name: /dev/dvd
             logical name: /dev/dvdrw
             logical name: /dev/sr0
             version: XA11
             capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
             configuration: ansiversion=5 status=nodisc

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-34.37-generic 4.15.18
Uname: Linux 4.15.0-34-generic x86_64
.tmp.unity_support_test.0:
 
ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Sun Sep 30 22:53:16 2018
DistUpgraded: 2018-08-15 04:15:00,798 ERROR got error from PostInstallScript 
./xorg_fix_proprietary.py (g-exec-error-quark: Failed to execute child process 
"./xorg_fix_proprietary.py" (No such file or directory) (8))
DistroCodename: bionic
DistroVariant: ubuntu
DkmsStatus:
 bbswitch, 0.8, 4.15.0-33-generic, x86_64: installed
 bbswitch, 0.8, 4.15.0-34-generic, x86_64: installed
 virtualbox, 5.2.10, 4.15.0-33-generic, x86_64: installed
 virtualbox, 5.2.10, 4.15.0-34-generic, x86_64: installed
GraphicsCard:
 Intel Corporation HD Graphics 620 [8086:5916] (rev 02) (prog-if 00 [VGA 
controller])
   Subsystem: Acer Incorporated [ALI] HD Graphics 620 [1025:1094]
InstallationDate: Installed on 2018-04-01 (182 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 0408:a030 Quanta Computer, Inc. 
 Bus 001 Device 003: ID 04ca:3015 Lite-On Technology Corp. 
 Bus 001 Device 002: ID 0461:4d0f Primax Electronics, Ltd HP Optical Mouse
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Acer Aspire E5-575G
ProcEnviron:
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
 LANG=en_IN
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-34-generic 
root=UUID=24c65739-051c-489c-8021-ceba239a1286 ro quiet splash pcie_port_pm=off 
noresume vt.handoff=1
SourcePackage: xorg
UpgradeStatus: Upgraded to bionic on 2018-08-14 (46 days ago)
dmi.bios.date: 03/03/2017
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.25
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: Ironman_SK
dmi.board.vendor: Acer
dmi.board.version: V1.25
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: 
dmi:bvnInsydeCorp.:bvrV1.25:bd03/03/2017:svnAcer:pnAspireE5-575G:pvrV1.25:rvnAcer:rnIronman_SK:rvrV1.25:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.family: KBL
dmi.product.name: Aspire E5-575G
dmi.product.version: V1.25
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
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: Tue Aug 14 21:31:54 2018
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.19.6-1ubuntu4~16.04.1
xserver.video_driver: modeset

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic third-party-packages ubuntu

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1795256

Title:
  frequent crash of Ubuntu 18.04 with purple dotted screen or black
  screen error death

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https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1795256/+subscriptions

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