[SOLVED] No external screen available.

Hi all,

Today my laptop won't recognize any external screen. I use arandr. It's not detecting any of them (I have 2)

I tried other screens, rebooting, rebooting in kernel 4.19 (I use 5.4). without success.

also I don't think it's related to an update, I have rebooted a few times since the last one.

Any idea where I can look? I have no idea where to find logs or how to debug this further.

Thank you so much in advance.

sudo lshw

sylvain-pc
    description: Notebook
    product: 20KHCTO1WW (LENOVO_MT_20KH_BU_Think_FM_ThinkPad X1 Carbon 6th)
    vendor: LENOVO
    version: ThinkPad X1 Carbon 6th
    serial: PF1PA8RN
    width: 4294967295 bits
    capabilities: smbios-3.0 dmi-3.0 smp vsyscall32
    configuration: administrator_password=disabled chassis=notebook family=ThinkPad X1 Carbon 6th power-on_password=disabled sku=LENOVO_MT_20KH_BU_Think_FM_ThinkPad X1 Carbon 6th uuid=CC9F8B27-1A22-B211-A85C-A69D91926635
  *-core
       description: Motherboard
       product: 20KHCTO1WW
       vendor: LENOVO
       physical id: 0
       version: SDK0J40697 WIN
       serial: L1HF94P031Y
       slot: Not Available
     *-memory
          description: System Memory
          physical id: 3
          slot: System board or motherboard
          size: 16GiB
        *-bank:0
             description: Row of chips LPDDR3 Synchronous Unbuffered (Unregistered) 2133 MHz (0,5 ns)
             product: H9CCNNNCLGALAR-NVD
             vendor: SK Hynix
             physical id: 0
             serial: 00000000
             slot: ChannelA-DIMM0
             size: 8GiB
             width: 64 bits
             clock: 2133MHz (0.5ns)
        *-bank:1
             description: Row of chips LPDDR3 Synchronous Unbuffered (Unregistered) 2133 MHz (0,5 ns)
             product: H9CCNNNCLGALAR-NVD
             vendor: SK Hynix
             physical id: 1
             serial: 00000000
             slot: ChannelB-DIMM0
             size: 8GiB
             width: 64 bits
             clock: 2133MHz (0.5ns)
     *-cache:0
          description: L1 cache
          physical id: 7
          slot: L1 Cache
          size: 256KiB
          capacity: 256KiB
          capabilities: synchronous internal write-back unified
          configuration: level=1
     *-cache:1
          description: L2 cache
          physical id: 8
          slot: L2 Cache
          size: 1MiB
          capacity: 1MiB
          capabilities: synchronous internal write-back unified
          configuration: level=2
     *-cache:2
          description: L3 cache
          physical id: 9
          slot: L3 Cache
          size: 8MiB
          capacity: 8MiB
          capabilities: synchronous internal write-back unified
          configuration: level=3
     *-cpu
          description: CPU
          product: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
          vendor: Intel Corp.
          physical id: a
          bus info: cpu@0
          version: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
          serial: None
          slot: U3E1
          size: 3291MHz
          capacity: 4GHz
          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 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 ept_ad 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 md_clear flush_l1d cpufreq
          configuration: cores=4 enabledcores=4 threads=8
     *-firmware
          description: BIOS
          vendor: LENOVO
          physical id: b
          version: N23ET68W (1.43 )
          date: 10/16/2019
          size: 128KiB
          capacity: 15MiB
          capabilities: pci pnp upgrade shadowing cdboot bootselect edd int13floppy720 int5printscreen int9keyboard int14serial int17printer int10video acpi usb biosbootspecification uefi
     *-pci
          description: Host bridge
          product: Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers
          vendor: Intel Corporation
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 08
          width: 32 bits
          clock: 33MHz
          configuration: driver=skl_uncore
          resources: irq:0
        *-display
             description: VGA compatible controller
             product: UHD Graphics 620
             vendor: Intel Corporation
             physical id: 2
             bus info: pci@0000:00:02.0
             logical name: /dev/fb0
             version: 07
             width: 64 bits
             clock: 33MHz
             capabilities: pciexpress msi pm vga_controller bus_master cap_list rom fb
             configuration: depth=32 driver=i915 latency=0 mode=2560x1440 visual=truecolor xres=2560 yres=1440
             resources: iomemory:2f0-2ef iomemory:2f0-2ef irq:138 memory:2ffa000000-2ffaffffff memory:2fa0000000-2fafffffff ioport:e000(size=64) memory:c0000-dffff
        *-generic:0
             description: Signal processing controller
             product: Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem
             vendor: Intel Corporation
             physical id: 4
             bus info: pci@0000:00:04.0
             version: 08
             width: 64 bits
             clock: 33MHz
             capabilities: msi pm cap_list
             configuration: driver=proc_thermal latency=0
             resources: iomemory:2f0-2ef irq:16 memory:2ffb020000-2ffb027fff
        *-generic:1 UNCLAIMED
             description: System peripheral
             product: Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
             vendor: Intel Corporation
             physical id: 8
             bus info: pci@0000:00:08.0
             version: 00
             width: 64 bits
             clock: 33MHz
             capabilities: msi pm cap_list
             configuration: latency=0
             resources: iomemory:2f0-2ef memory:2ffb02f000-2ffb02ffff
        *-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: iomemory:2f0-2ef irq:134 memory:2ffb010000-2ffb01ffff
           *-usbhost:0
                product: xHCI Host Controller
                vendor: Linux 5.4.6-2-MANJARO xhci-hcd
                physical id: 0
                bus info: usb@1
                logical name: usb1
                version: 5.04
                capabilities: usb-2.00
                configuration: driver=hub slots=12 speed=480Mbit/s
              *-usb:0
                   description: Video
                   product: Integrated IR Camera
                   vendor: SunplusIT Inc
                   physical id: 5
                   bus info: usb@1:5
                   version: 0.12
                   capabilities: usb-2.01
                   configuration: driver=uvcvideo maxpower=500mA speed=480Mbit/s
              *-usb:1
                   description: Bluetooth wireless interface
                   vendor: Intel Corp.
                   physical id: 7
                   bus info: usb@1:7
                   version: 0.10
                   capabilities: bluetooth usb-2.00
                   configuration: driver=btusb maxpower=100mA speed=12Mbit/s
              *-usb:2
                   description: Video
                   product: Integrated Camera
                   vendor: Chicony Electronics Co.,Ltd.
                   physical id: 8
                   bus info: usb@1:8
                   version: 0.12
                   capabilities: usb-2.01
                   configuration: driver=uvcvideo maxpower=500mA speed=480Mbit/s
              *-usb:3 UNCLAIMED
                   description: Generic USB device
                   vendor: Synaptics, Inc.
                   physical id: 9
                   bus info: usb@1:9
                   version: 1.64
                   serial: 072bb486e732
                   capabilities: usb-2.00
                   configuration: maxpower=100mA speed=12Mbit/s
           *-usbhost:1
                product: xHCI Host Controller
                vendor: Linux 5.4.6-2-MANJARO xhci-hcd
                physical id: 1
                bus info: usb@2
                logical name: usb2
                version: 5.04
                capabilities: usb-3.00
                configuration: driver=hub slots=6 speed=5000Mbit/s
              *-usb
                   description: Mass storage device
                   product: USB3.0-CRW
                   vendor: Generic
                   physical id: 3
                   bus info: usb@2:3
                   version: 29.08
                   serial: 28203008282014000
                   capabilities: usb-3.00 scsi
                   configuration: driver=usb-storage maxpower=800mA speed=5000Mbit/s
        *-generic:2
             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 cap_list
             configuration: driver=intel_pch_thermal latency=0
             resources: iomemory:2f0-2ef irq:18 memory:2ffb02e000-2ffb02efff
        *-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: iomemory:2f0-2ef irq:136 memory:2ffb02d000-2ffb02dfff
        *-pci:0
             description: PCI bridge
             product: Sunrise Point-LP PCI Express Root Port #1
             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 memory:ee200000-ee2fffff
           *-network
                description: Wireless interface
                product: Wireless 8265 / 8275
                vendor: Intel Corporation
                physical id: 0
                bus info: pci@0000:02:00.0
                logical name: wlp2s0
                version: 78
                serial: 48:89:e7:1e:f9:10
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
                configuration: broadcast=yes driver=iwlwifi driverversion=5.4.6-2-MANJARO firmware=36.77d01142.0 ip=172.30.10.51 latency=0 link=yes multicast=yes wireless=IEEE 802.11
                resources: irq:137 memory:ee200000-ee201fff
        *-pci:1
             description: PCI bridge
             product: Sunrise Point-LP PCI Express Root Port #5
             vendor: Intel Corporation
             physical id: 1c.4
             bus info: pci@0000:00:1c.4
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:123 memory:ee100000-ee1fffff
           *-storage
                description: Non-Volatile memory controller
                product: WD Black 2018/PC SN720 NVMe SSD
                vendor: Sandisk Corp
                physical id: 0
                bus info: pci@0000:04:00.0
                version: 00
                width: 64 bits
                clock: 33MHz
                capabilities: storage pm msi msix pciexpress nvm_express bus_master cap_list
                configuration: driver=nvme latency=0
                resources: irq:16 memory:ee100000-ee103fff memory:ee104000-ee1040ff
        *-pci:2
             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:124 ioport:2000(size=4096) memory:c0000000-ee0fffff ioport:2fb0000000(size=1241513984)
        *-isa
             description: ISA bridge
             product: Sunrise Point LPC Controller/eSPI Controller
             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)
             configuration: latency=0
             resources: memory:ee320000-ee323fff
        *-multimedia
             description: Audio device
             product: Sunrise Point-LP HD Audio
             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=64
             resources: iomemory:2f0-2ef iomemory:2f0-2ef irq:141 memory:2ffb028000-2ffb02bfff memory:2ffb000000-2ffb00ffff
        *-serial
             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: driver=i801_smbus latency=0
             resources: iomemory:2f0-2ef irq:16 memory:2ffb02c000-2ffb02c0ff ioport:efa0(size=32)
        *-network
             description: Ethernet interface
             product: Ethernet Connection (4) I219-V
             vendor: Intel Corporation
             physical id: 1f.6
             bus info: pci@0000:00:1f.6
             logical name: enp0s31f6
             version: 21
             serial: e8:6a:64:fb:56:81
             capacity: 1Gbit/s
             width: 32 bits
             clock: 33MHz
             capabilities: pm msi cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
             configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.1-4 latency=0 link=no multicast=yes port=twisted pair
             resources: irq:135 memory:ee300000-ee31ffff
  *-battery
       product: 01AV494
       vendor: LGC
       physical id: 1
       slot: Front
       capacity: 57000mWh
       configuration: voltage=11,6V
  *-scsi
       physical id: 2
       bus info: scsi@0
       logical name: scsi0
       capabilities: scsi-host
       configuration: driver=usb-storage
  *-network:0
       description: Ethernet interface
       physical id: 3
       logical name: br-68c98978fe1f
       serial: 02:42:bf:d7:2f:6f
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=172.21.0.1 link=yes multicast=yes
  *-network:1
       description: Ethernet interface
       physical id: 4
       logical name: br-0cb99076ca2c
       serial: 02:42:0a:57:4a:94
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=172.22.0.1 link=no multicast=yes
  *-network:2
       description: Ethernet interface
       physical id: 5
       logical name: br-d8f956fc3d4d
       serial: 02:42:6b:50:53:07
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=172.19.0.1 link=no multicast=yes
  *-network:3
       description: Ethernet interface
       physical id: 6
       logical name: veth9b3b91a
       serial: d2:9c:a6:92:00:29
       size: 10Gbit/s
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=veth driverversion=1.0 duplex=full link=yes multicast=yes port=twisted pair speed=10Gbit/s
  *-network:4
       description: Ethernet interface
       physical id: 7
       logical name: docker0
       serial: 6e:51:98:0b:fd:fa
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=172.17.0.1 link=no multicast=yes
  *-network:5
       description: Ethernet interface
       physical id: 8
       logical name: br-2294c88a51e1
       serial: 66:6f:31:e7:f6:d5
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=172.20.0.1 link=yes multicast=yes
  *-network:6
       description: Ethernet interface
       physical id: 9
       logical name: br-435a0452244a
       serial: 02:42:1f:d9:fc:21
       capabilities: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=172.18.0.1 link=no multicast=yes
  *-network:7
       description: Ethernet interface
       physical id: a
       logical name: vethefee02e
       serial: 66:ba:90:87:8b:1b
       size: 10Gbit/s
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=veth driverversion=1.0 duplex=full link=yes multicast=yes port=twisted pair speed=10Gbit/s

Funny enough, timeshift to yesterday (my screens were working) did not make it work again. I will try to boot with a liveUsb distro see if it's distro related or if my hardware died.

Live distro failed also. Can I assume it's hardware? Anything I can test? I am out of my comfort zone now.

Please post output from

xrandr

and welcome :slight_smile:

hey! thanks for the reply.
I actually got another laptop. I had to get back on my project.
I swapped the drive and all worked on the new laptop(same specs/brand) I think something was wrong with the connectors.

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