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    [DESKTOP] Black screen on Boot, intermittently

    Hi


    Hope you can help me.
    I am a newbie to KDE and Linux, I have chosen Kubuntu 21.04 as my O/S


    After many weeks of slowly adding Software and attaching Hardware and almost have everything setup.
    My PC has decided to intermittently boot to a Black Screen, this happens about 7 times out of 10.
    Sometimes it Boots to a normal desktop and everything works.


    Most times its a Black screen and almost nothing works ?
    The terminal works and I can run Firefox & spectacle works.
    If i type dolphin it only opens the dolphin title bar not the full application.


    I am sure you will need more Info, but as a newbie, I will need instructions ?


    While this is frustrating to be so close to my completed install of Kubuntu, perhaps this is a good time to learn how to fix problems.
    My previous job was Electronics fault finding, so I have a logical mind.


    My PC is set to auto login.


    Thanks
    Gaz




    Operating System: Kubuntu 21.04
    KDE Plasma Version: 5.21.4
    KDE Frameworks Version: 5.80.0
    Qt Version: 5.15.2
    Kernel Version: 5.11.0-18-generic
    OS Type: 64-bit
    Graphics Platform: X11
    Processors: 4 ? Intel? Pentium? Silver J5040 CPU @ 2.00GHz
    Memory: 7.4 GiB of RAM
    Graphics Processor: Mesa Intel? UHD Graphics 605

    #2
    Capture the output of "sudo lshw" and post it in a code box.(The hash icon on the icon menu bar)
    "A nation that is afraid to let its people judge the truth and falsehood in an open market is a nation that is afraid of its people.”
    – John F. Kennedy, February 26, 1962.

    Comment


      #3
      Thanks, here is the output of that command ...

      Code:
      mini-itx-j5040              
          description: Desktop Computer
          product: To Be Filled By O.E.M. (To Be Filled By O.E.M.)
          vendor: To Be Filled By O.E.M.
          version: To Be Filled By O.E.M.
          serial: To Be Filled By O.E.M.
          width: 64 bits
          capabilities: smbios-3.2.0 dmi-3.2.0 smp vsyscall32
          configuration: boot=normal chassis=desktop family=To Be Filled By O.E.M. sku=To Be Filled By O.E.M. uuid=A8A1595F-D706-0000-0000-000000000000
        *-core
             description: Motherboard
             product: J5040-ITX
             vendor: ASRock
             physical id: 0
             serial: M80-DA028200514
           *-firmware
                description: BIOS
                vendor: American Megatrends Inc.
                physical id: 0
                version: P1.60
                date: 01/17/2020
                size: 64KiB
                capacity: 16MiB
                capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer acpi usb biosbootspecification uefi
           *-memory
                description: System Memory
                physical id: b
                slot: System board or motherboard
                size: 8GiB
              *-bank:0
                   description: SODIMM DDR4 Synchronous 2400 MHz (0.4 ns)
                   product: 99U5624-013.A00G
                   vendor: Kingston
                   physical id: 0
                   serial: 00204335
                   slot: A1_DIMM0
                   size: 8GiB
                   width: 64 bits
                   clock: 2400MHz (0.4ns)
              *-bank:1
                   description: Synchronous [empty]
                   product: Array1_PartNumber1
                   vendor: B1_Manufacturer0
                   physical id: 1
                   serial: B1_SerNum0
                   slot: B1_DIMM0
           *-cache:0
                description: L1 cache
                physical id: 16
                slot: CPU Internal L1
                size: 224KiB
                capacity: 224KiB
                capabilities: synchronous internal write-back
                configuration: level=1
           *-cache:1
                description: L2 cache
                physical id: 17
                slot: CPU Internal L2
                size: 4MiB
                capacity: 4MiB
                capabilities: synchronous internal write-back unified
                configuration: level=2
           *-cpu
                description: CPU
                product: Intel(R) Pentium(R) Silver J5040 CPU @ 2.00GHz
                vendor: Intel Corp.
                physical id: 18
                bus info: cpu@0
                version: Intel(R) Pentium(R) Silver J5040 CPU @ 2.00GHz
                slot: CPUSocket
                size: 2953MHz
                capacity: 3200MHz
                width: 64 bits
                clock: 100MHz
                capabilities: lm 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 x86-64 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 cx16 xtpr pdcm sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave rdrand lahf_lm 3dnowprefetch cpuid_fault cat_l2 cdp_l2 ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust smep erms mpx rdt_a rdseed smap clflushopt intel_pt sha_ni xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts umip rdpid md_clear arch_capabilities cpufreq
                configuration: cores=4 enabledcores=4 threads=4
           *-pci
                description: Host bridge
                product: Gemini Lake Host Bridge
                vendor: Intel Corporation
                physical id: 100
                bus info: pci@0000:00:00.0
                version: 06
                width: 32 bits
                clock: 33MHz
              *-generic
                   description: Signal processing controller
                   product: Celeron/Pentium Silver Processor Dynamic Platform and Thermal Framework Processor Participant
                   vendor: Intel Corporation
                   physical id: 0.1
                   bus info: pci@0000:00:00.1
                   version: 06
                   width: 64 bits
                   clock: 33MHz
                   capabilities: pm bus_master cap_list
                   configuration: driver=proc_thermal latency=0
                   resources: irq:24 memory:80000000-80007fff
              *-display
                   description: VGA compatible controller
                   product: GeminiLake [UHD Graphics 605]
                   vendor: Intel Corporation
                   physical id: 2
                   bus info: pci@0000:00:02.0
                   version: 06
                   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:a0000000-a0ffffff memory:90000000-9fffffff ioport:f000(size=64) memory:c0000-dffff
              *-multimedia
                   description: Audio device
                   product: Celeron/Pentium Silver Processor High Definition Audio
                   vendor: Intel Corporation
                   physical id: e
                   bus info: pci@0000:00:0e.0
                   version: 06
                   width: 64 bits
                   clock: 33MHz
                   capabilities: pm msi pciexpress bus_master cap_list
                   configuration: driver=snd_hda_intel latency=0
                   resources: irq:132 memory:a1310000-a1313fff memory:a1000000-a10fffff
              *-communication
                   description: Communication controller
                   product: Celeron/Pentium Silver Processor Trusted Execution Engine Interface
                   vendor: Intel Corporation
                   physical id: f
                   bus info: pci@0000:00:0f.0
                   version: 06
                   width: 64 bits
                   clock: 33MHz
                   capabilities: pm msi bus_master cap_list
                   configuration: driver=mei_me latency=0
                   resources: irq:131 memory:a1319000-a1319fff
              *-sata
                   description: SATA controller
                   product: Celeron/Pentium Silver Processor SATA Controller
                   vendor: Intel Corporation
                   physical id: 12
                   bus info: pci@0000:00:12.0
                   version: 06
                   width: 32 bits
                   clock: 66MHz
                   capabilities: sata msi pm ahci_1.0 bus_master cap_list
                   configuration: driver=ahci latency=0
                   resources: irq:126 memory:a1314000-a1315fff memory:a1318000-a13180ff ioport:f090(size=8) ioport:f080(size=4) ioport:f060(size=32) memory:a1317000-a13177ff
              *-pci:0
                   description: PCI bridge
                   product: Gemini Lake PCI Express Root Port
                   vendor: Intel Corporation
                   physical id: 13
                   bus info: pci@0000:00:13.0
                   version: f6
                   width: 32 bits
                   clock: 33MHz
                   capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
                   configuration: driver=pcieport
                   resources: irq:122
              *-pci:1
                   description: PCI bridge
                   product: Gemini Lake PCI Express Root Port
                   vendor: Intel Corporation
                   physical id: 13.1
                   bus info: pci@0000:00:13.1
                   version: f6
                   width: 32 bits
                   clock: 33MHz
                   capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
                   configuration: driver=pcieport
                   resources: irq:123
              *-pci:2
                   description: PCI bridge
                   product: Gemini Lake PCI Express Root Port
                   vendor: Intel Corporation
                   physical id: 13.2
                   bus info: pci@0000:00:13.2
                   version: f6
                   width: 32 bits
                   clock: 33MHz
                   capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
                   configuration: driver=pcieport
                   resources: irq:124 ioport:e000(size=4096) memory:a1200000-a12fffff
                 *-network
                      description: Ethernet interface
                      product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
                      vendor: Realtek Semiconductor Co., Ltd.
                      physical id: 0
                      bus info: pci@0000:03:00.0
                      logical name: eno1
                      version: 15
                      serial: a8:a1:59:5f:d7:06
                      size: 100Mbit/s
                      capacity: 1Gbit/s
                      width: 64 bits
                      clock: 33MHz
                      capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
                      configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.11.0-18-generic duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 ip=192.168.1.67 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
                      resources: irq:20 ioport:e000(size=256) memory:a1204000-a1204fff memory:a1200000-a1203fff
              *-pci:3
                   description: PCI bridge
                   product: Gemini Lake PCI Express Root Port
                   vendor: Intel Corporation
                   physical id: 13.3
                   bus info: pci@0000:00:13.3
                   version: f6
                   width: 32 bits
                   clock: 33MHz
                   capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
                   configuration: driver=pcieport
                   resources: irq:125 ioport:d000(size=4096) memory:a1100000-a11fffff
                 *-sata
                      description: SATA controller
                      product: ASM1062 Serial ATA Controller
                      vendor: ASMedia Technology Inc.
                      physical id: 0
                      bus info: pci@0000:04:00.0
                      version: 02
                      width: 32 bits
                      clock: 33MHz
                      capabilities: sata msi pm pciexpress ahci_1.0 bus_master cap_list
                      configuration: driver=ahci latency=0
                      resources: irq:128 ioport:d050(size=8) ioport:d040(size=4) ioport:d030(size=8) ioport:d020(size=4) ioport:d000(size=32) memory:a1100000-a11001ff
              *-usb
                   description: USB controller
                   product: Celeron/Pentium Silver Processor USB 3.0 xHCI Controller
                   vendor: Intel Corporation
                   physical id: 15
                   bus info: pci@0000:00:15.0
                   version: 06
                   width: 64 bits
                   clock: 33MHz
                   capabilities: pm msi xhci bus_master cap_list
                   configuration: driver=xhci_hcd latency=0
                   resources: irq:127 memory:a1300000-a130ffff
                 *-usbhost:0
                      product: xHCI Host Controller
                      vendor: Linux 5.11.0-18-generic xhci-hcd
                      physical id: 0
                      bus info: usb@1
                      logical name: usb1
                      version: 5.11
                      capabilities: usb-2.00
                      configuration: driver=hub slots=9 speed=480Mbit/s
                    *-usb
                         description: USB hub
                         product: USB2.0 Hub
                         vendor: Genesys Logic, Inc.
                         physical id: 3
                         bus info: usb@1:3
                         version: 77.64
                         capabilities: usb-2.00
                         configuration: driver=hub maxpower=100mA slots=4 speed=480Mbit/s
                       *-usb:0
                            description: USB hub
                            product: USB2.0 Hub
                            vendor: Genesys Logic, Inc.
                            physical id: 1
                            bus info: usb@1:3.1
                            version: 77.64
                            capabilities: usb-2.00
                            configuration: driver=hub maxpower=100mA slots=4 speed=480Mbit/s
                          *-usb
                               description: Mouse
                               product: Logitech USB Optical Mouse
                               vendor: Logitech
                               physical id: 3
                               bus info: usb@1:3.1.3
                               version: 43.00
                               capabilities: usb-2.00
                               configuration: driver=usbhid maxpower=100mA speed=2Mbit/s
                       *-usb:1
                            description: Keyboard
                            product: USB Keyboard
                            physical id: 4
                            bus info: usb@1:3.4
                            version: 2.90
                            capabilities: usb-1.10
                            configuration: driver=usbhid maxpower=100mA speed=2Mbit/s
                 *-usbhost:1
                      product: xHCI Host Controller
                      vendor: Linux 5.11.0-18-generic xhci-hcd
                      physical id: 1
                      bus info: usb@2
                      logical name: usb2
                      version: 5.11
                      capabilities: usb-3.00
                      configuration: driver=hub slots=7 speed=5000Mbit/s
              *-isa
                   description: ISA bridge
                   product: Celeron/Pentium Silver Processor LPC Controller
                   vendor: Intel Corporation
                   physical id: 1f
                   bus info: pci@0000:00:1f.0
                   version: 06
                   width: 32 bits
                   clock: 33MHz
                   capabilities: isa bus_master
                   configuration: latency=0
              *-serial
                   description: SMBus
                   product: Celeron/Pentium Silver Processor Gaussian Mixture Model
                   vendor: Intel Corporation
                   physical id: 1f.1
                   bus info: pci@0000:00:1f.1
                   version: 06
                   width: 64 bits
                   clock: 33MHz
                   configuration: driver=i801_smbus latency=0
                   resources: irq:20 memory:a1316000-a13160ff ioport:f040(size=32)
           *-pnp00:00
                product: PnP device PNP0c02
                physical id: 1
                capabilities: pnp
                configuration: driver=system
           *-pnp00:01
                product: PnP device PNP0501
                physical id: 2
                capabilities: pnp
                configuration: driver=serial
           *-pnp00:02
                product: PnP device PNP0c02
                physical id: 3
                capabilities: pnp
                configuration: driver=system
           *-pnp00:03
                product: PnP device PNP0c02
                physical id: 4
                capabilities: pnp
                configuration: driver=system
           *-pnp00:04
                product: PnP device PNP0b00
                physical id: 5
                capabilities: pnp
                configuration: driver=rtc_cmos
           *-scsi:0
                physical id: 6
                logical name: scsi0
                capabilities: emulated
              *-disk
                   description: ATA Disk
                   product: CT120BX500SSD1
                   physical id: 0.0.0
                   bus info: scsi@0:0.0.0
                   logical name: /dev/sda
                   version: R013
                   serial: 2018E3FA87A5
                   size: 111GiB (120GB)
                   capabilities: gpt-1.00 partitioned partitioned:gpt
                   configuration: ansiversion=5 guid=5508e12a-c949-4656-a716-e57d3440d8d4 logicalsectorsize=512 sectorsize=512
                 *-volume:0
                      description: Windows NTFS volume
                      vendor: Windows
                      physical id: 1
                      bus info: scsi@0:0.0.0,1
                      logical name: /dev/sda1
                      version: 3.1
                      serial: 88e7-6dd3
                      size: 448MiB
                      capacity: 449MiB
                      capabilities: boot precious ntfs initialized
                      configuration: clustersize=4096 created=2021-05-19 21:45:29 filesystem=ntfs label=Recovery name=Basic data partition state=clean
                 *-volume:1
                      description: Windows FAT volume
                      vendor: MSDOS5.0
                      physical id: 2
                      bus info: scsi@0:0.0.0,2
                      logical name: /dev/sda2
                      logical name: /boot/efi
                      version: FAT32
                      serial: 7ae8-3325
                      size: 92MiB
                      capacity: 98MiB
                      capabilities: boot fat initialized
                      configuration: FATs=2 filesystem=fat mount.fstype=vfat mount.options=rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro name=EFI system partition state=mounted
                 *-volume:2
                      description: reserved partition
                      vendor: Windows
                      physical id: 3
                      bus info: scsi@0:0.0.0,3
                      logical name: /dev/sda3
                      serial: ac46a6f4-ad46-4929-a5e1-5bf9cf257898
                      capacity: 15MiB
                      capabilities: nofs
                      configuration: name=Microsoft reserved partition
                 *-volume:3
                      description: Windows NTFS volume
                      vendor: Windows
                      physical id: 4
                      bus info: scsi@0:0.0.0,4
                      logical name: /dev/sda4
                      logical name: /media/gb/Windows 10 Home
                      version: 3.1
                      serial: 8efa5356-b904-f74c-84e6-3b1631ea7ebb
                      size: 40GiB
                      capacity: 40GiB
                      capabilities: ntfs initialized
                      configuration: clustersize=4096 created=2021-05-19 21:45:36 filesystem=ntfs label=Windows 10 Home mount.fstype=fuseblk mount.options=rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096 name=Basic data partition state=mounted
                 *-volume:4
                      description: EXT4 volume
                      vendor: Linux
                      physical id: 5
                      bus info: scsi@0:0.0.0,5
                      logical name: /dev/sda5
                      logical name: /
                      version: 1.0
                      serial: 23affd00-616e-4c62-ab3d-7c81f26d3be9
                      size: 29GiB
                      capabilities: journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized
                      configuration: created=2021-05-31 15:43:32 filesystem=ext4 label=Kubuntu_System lastmountpoint=/ modified=2021-07-20 06:45:13 mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro mounted=2021-07-20 06:45:14 state=mounted
                 *-volume:5
                      description: EXT4 volume
                      vendor: Linux
                      physical id: 6
                      bus info: scsi@0:0.0.0,6
                      logical name: /dev/sda6
                      logical name: /home
                      version: 1.0
                      serial: a3235df3-bfb5-42c3-93fe-f99b0d184d4a
                      size: 15GiB
                      capabilities: journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized
                      configuration: created=2021-05-31 15:43:36 filesystem=ext4 label=Kubuntu_Home lastmountpoint=/home modified=2021-07-20 06:45:20 mount.fstype=ext4 mount.options=rw,relatime mounted=2021-07-20 06:45:20 state=mounted
                 *-volume:6
                      description: EXT4 volume
                      vendor: Linux
                      physical id: 7
                      bus info: scsi@0:0.0.0,7
                      logical name: /dev/sda7
                      logical name: /media/gb/OTHER   ( ext4 )
                      version: 1.0
                      serial: d97fe911-e661-4e37-9ceb-11a1f7c71516
                      size: 20GiB
                      capabilities: journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
                      configuration: created=2021-06-01 10:15:39 filesystem=ext4 label=OTHER   ( ext4 ) lastmountpoint=/media/gb/OTHER   ( ext4 ) modified=2021-07-20 06:45:29 mount.fstype=ext4 mount.options=rw,nosuid,nodev,relatime mounted=2021-07-20 06:45:29 name=EXT4 folder -  SSD state=mounted
                 *-volume:7
                      description: Windows NTFS volume
                      physical id: 8
                      bus info: scsi@0:0.0.0,8
                      logical name: /dev/sda8
                      logical name: /media/gb/OTHER   ( ntfs )
                      version: 3.1
                      serial: 03a5-3f39
                      size: 5160MiB
                      capacity: 5176MiB
                      capabilities: ntfs initialized
                      configuration: clustersize=4096 created=2021-06-21 11:09:54 filesystem=ntfs label=OTHER   ( ntfs ) mount.fstype=fuseblk mount.options=rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096 state=mounted
           *-scsi:1
                physical id: 7
                logical name: scsi2
                capabilities: emulated
              *-disk
                   description: ATA Disk
                   product: CT500MX500SSD1
                   physical id: 0.0.0
                   bus info: scsi@2:0.0.0
                   logical name: /dev/sdb
                   version: 032
                   serial: 21102D6EA016
                   size: 465GiB (500GB)
                   capabilities: gpt-1.00 partitioned partitioned:gpt
                   configuration: ansiversion=5 guid=aa709bd7-3e97-b542-9aab-41d3130b62c5 logicalsectorsize=512 sectorsize=4096
                 *-volume:0
                      description: EXT4 volume
                      vendor: Linux
                      physical id: 1
                      bus info: scsi@2:0.0.0,1
                      logical name: /dev/sdb1
                      logical name: /media/gb/DATA
                      version: 1.0
                      serial: 1675019a-b84c-4602-bcf7-cd5e888e4ff3
                      size: 244GiB
                      capabilities: nomount journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized
                      configuration: created=2021-07-05 15:53:26 filesystem=ext4 label=DATA lastmountpoint=/media/gb/DATA modified=2021-07-20 06:45:29 mount.fstype=ext4 mount.options=rw,nosuid,nodev,relatime mounted=2021-07-20 06:45:29 state=mounted
                 *-volume:1
                      description: EXT4 volume
                      vendor: Linux
                      physical id: 2
                      bus info: scsi@2:0.0.0,2
                      logical name: /dev/sdb2
                      logical name: /media/gb/VARIOUS
                      version: 1.0
                      serial: f4cbfc39-8697-412d-bc19-b1498670af20
                      size: 48GiB
                      capabilities: readonly nomount journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized
                      configuration: created=2021-07-05 15:53:36 filesystem=ext4 label=VARIOUS lastmountpoint=/media/gb/VARIOUS modified=2021-07-20 06:45:29 mount.fstype=ext4 mount.options=rw,nosuid,nodev,relatime mounted=2021-07-20 06:45:29 state=mounted
                 *-volume:2
                      description: EXT4 volume
                      vendor: Linux
                      physical id: 3
                      bus info: scsi@2:0.0.0,3
                      logical name: /dev/sdb3
                      logical name: /media/gb/SYSTEMS
                      version: 1.0
                      serial: 1a6251fd-04ea-4331-aaf6-c8a2c40f735a
                      size: 172GiB
                      capabilities: nomount journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized
                      configuration: created=2021-07-05 15:53:41 filesystem=ext4 label=SYSTEMS lastmountpoint=/media/gb/SYSTEMS modified=2021-07-20 06:45:29 mount.fstype=ext4 mount.options=rw,nosuid,nodev,relatime mounted=2021-07-20 06:45:29 state=mounted
      gb@Mini-ITX-J5040:~$
      Last edited by Snowhog; Jul 20, 2021, 10:10 AM.

      Comment


        #4
        Nothing looks unusual in your hardware or drivers.

        First, see if your system clock is syncronized. Run "timedatectl" and see if it says
        "System clock synchronized: yes "
        IF it says ":no" then
        run "systemsettings5" in that terminal and choose "Regional Settings". From that choose "Date & Time" and set (or reset) your timezone, date and time.
        Then reboot and see how that goes.

        If it didn't fix things then perhaps your theme is being temperamental in some way. Run "systemsettings5" again in the working terminal you mentioned. Change your Global Theme and Plasma Style to "Breeze" and reboot.
        "A nation that is afraid to let its people judge the truth and falsehood in an open market is a nation that is afraid of its people.”
        – John F. Kennedy, February 26, 1962.

        Comment

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