[i915] Plugging an external monitor on USB-C port does not show up. Need to reboot each time
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
Whenever I plug an external monitor (Dell P2720DC) on my ThinkPad X1 (8th gen.) with Ubuntu 20.04, it is not directly recognized. I need to reboot the system so that it can find the monitor. Here is an extract of dmesg:
[87389.923632] usb 1-5: new high-speed USB device number 33 using xhci_hcd
[87390.072891] usb 1-5: New USB device found, idVendor=413c, idProduct=8442, bcdDevice= 1.00
[87390.072897] usb 1-5: New USB device strings: Mfr=0, Product=0, SerialNumber=1
[87390.072901] usb 1-5: SerialNumber: E9021071FBE1
[87390.073934] hub 1-5:1.0: USB hub found
[87390.074047] hub 1-5:1.0: 6 ports detected
[87390.367780] usb 1-5.5: new high-speed USB device number 34 using xhci_hcd
[87390.472473] usb 1-5.5: New USB device found, idVendor=0451, idProduct=82ff, bcdDevice= 2.00
[87390.472479] usb 1-5.5: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[87390.475022] hid-generic 0003:0451:
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSign
Uname: Linux 5.4.0-47-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckR
CompizPlugins: No value set for `/apps/
CompositorRunning: None
CurrentDesktop: Unity
Date: Wed Sep 16 09:40:10 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingI
GraphicsCard:
Intel Corporation UHD Graphics [8086:9b41] (rev 02) (prog-if 00 [VGA controller])
Subsystem: Lenovo UHD Graphics [17aa:22be]
InstallationDate: Installed on 2020-08-24 (22 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
MachineType: LENOVO 20U9004PFR
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/01/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N2WET19W (1.09 )
dmi.board.
dmi.board.name: 20U9004PFR
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.family: ThinkPad X1 Carbon Gen 8
dmi.product.name: 20U9004PFR
dmi.product.sku: LENOVO_
dmi.product.
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.
version.
version.
version.
version.
version.
version.
affects: | xorg (Ubuntu) → linux (Ubuntu) |
summary: |
- Plugging an external monitor on USB-C port does not show up. Need to - reboot each time + [i915] Plugging an external monitor on USB-C port does not show up. Need + to reboot each time |
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