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[Richard <ismail@xxxxxxxxxxxx>]

When the external mouse is in a bad state on boot, it has no power

When in a bad state and you re-plug it while in the option-boot menu, it gets power (ie. the red LED is now on)
- but it does not start working

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https://bugs.launchpad.net/bugs/1572739

Title:
  Mac UEFI boot 24x slower keyboard/touchpad troubled

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  When rebooting after a Linux session, the UEFI and grub boots are extremely slow and the process takes 3 minutes
  - As soon as the kernel boots, ie. luks input, everything is fine again
  - OS X boot and option-boot is slow too, fast after FileVault password input
  - Internal keyboard and touchpad is extremely slow, like 30 s per key press.
  - Plug in usb keyboard and mouse: works fine, while the internals are still slow

  After an OS X ession upgrading to 10.11.04, the boot got fast again
  - After the net Linux session, back to slow

  Impact: boot takes 3 minutes

  get-around: lots of patience, possibly use of external usb keyboard

  first discovered on 15.10, exists on 16.04

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-21-generic 4.4.0-21.37
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Wed Apr 20 14:29:51 2016
  HibernationDevice: RESUME=/dev/mapper/C89-SWAP
  MachineType: Apple Inc. MacBookPro12,1
  ProcEnviron:
   SHELL=/bin/bash
   TERM=xterm-256color
   PATH=(custom, user)
   LANG=en_US.UTF-8
   LANGUAGE=en_US.UTF-8
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-21-generic.efi.signed root=/dev/mapper/C89-RFS ro quiet splash vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-21-generic N/A
   linux-backports-modules-4.4.0-21-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-04-19 (1 days ago)
  dmi.bios.date: 10/26/2015
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP121.88Z.0167.B15.1510261437
  dmi.board.name: Mac-E43C1C25D4880AD6
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro12,1
  dmi.chassis.type: 9
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-E43C1C25D4880AD6
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP121.88Z.0167.B15.1510261437:bd10/26/2015:svnAppleInc.:pnMacBookPro12,1:pvr1.0:rvnAppleInc.:rnMac-E43C1C25D4880AD6:rvrMacBookPro12,1:cvnAppleInc.:ct9:cvrMac-E43C1C25D4880AD6:
  dmi.product.name: MacBookPro12,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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