a) When I do a short press, then immediately after a release, the next option 
is selected (the dialog does not have time to appear even).
b) When I do a long press, then the options start to circle very quickly until 
I release the key (see the screencast)

I think the bug is caused by this: When you do Super+K, you hold Super
and press K repeatedly to switch the options. After you release the
Super key, the option is confirmed. When you use the fn key, there is
just one key, so after releasing, it immediately selects the option.

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https://bugs.launchpad.net/bugs/1878718

Title:
  HP ZBook 15 G6 display key (Fn+F1) autorepeats too fast to be usable

Status in linux package in Ubuntu:
  Confirmed
Status in xorg-server package in Ubuntu:
  New

Bug description:
  
  Steps to reproduce:
  1. Press the functional button for switching output to displays (joint, 
mirror, bulit-in, external) 2. The dialog is invoked

  What is expected:
  I should be able to select the desired option  and confirm it

  What happened instead:
  While the functional button for invoking the dialog is pressed, it iterates 
extremely fast over the options. I cannot control it. After releasing the key, 
the currently selected option is confirmed, which is effectively random.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: xorg 1:7.7+19ubuntu14
  ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30
  Uname: Linux 5.4.0-29-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  .proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: 
'/proc/driver/nvidia/gpus/0000:01:00.0'
  .proc.driver.nvidia.registry: Binary: ""
  .proc.driver.nvidia.suspend: suspend hibernate resume
  .proc.driver.nvidia.suspend_depth: default modeset uvm
  .proc.driver.nvidia.version:
   NVRM version: NVIDIA UNIX x86_64 Kernel Module  440.64  Fri Feb 21 01:17:26 
UTC 2020
   GCC version:
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
  CasperMD5CheckResult: skip
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Fri May 15 01:28:30 2020
  DistUpgraded: Fresh install
  DistroCodename: focal
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   NVIDIA Corporation TU117GLM [Quadro T2000 Mobile / Max-Q] [10de:1fb8] (rev 
a1) (prog-if 00 [VGA controller])
     Subsystem: Hewlett-Packard Company TU117GLM [Quadro T2000 Mobile / Max-Q] 
[103c:8611]
  InstallationDate: Installed on 2020-05-11 (3 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  MachineType: HP HP ZBook 15 G6
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-29-generic 
root=UUID=9895584a-6648-494d-9d91-e64ba192dd95 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/25/2019
  dmi.bios.vendor: HP
  dmi.bios.version: R92 Ver. 01.02.01
  dmi.board.name: 860F
  dmi.board.vendor: HP
  dmi.board.version: KBC Version 65.23.00
  dmi.chassis.type: 10
  dmi.chassis.vendor: HP
  dmi.modalias: 
dmi:bvnHP:bvrR92Ver.01.02.01:bd09/25/2019:svnHP:pnHPZBook15G6:pvr:rvnHP:rn860F:rvrKBCVersion65.23.00:cvnHP:ct10:cvr:
  dmi.product.family: 103C_5336AN HP ZBook 15
  dmi.product.name: HP ZBook 15 G6
  dmi.product.sku: 6CJ09AV
  dmi.sys.vendor: HP
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.101-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.4-2ubuntu1
  version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20200226-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

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