[Touch-packages] [Bug 1838227] Re: Bluetooth "Connection switch" snaps back by itself until after many tries

[Christopher M. Rogers]

Still an issue in the latest Ubuntu 20.04 release.
User winds up having to click the toggle over and over again while it 
stubbornly snaps back.
Replicated on Many different machines with different hardware.

Is there anyone who can not replicate this bug?


** Changed in: bluez (Ubuntu)
   Status: Expired => Confirmed

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Title:
  Bluetooth "Connection switch" snaps back by itself until after many
  tries

Status in bluez package in Ubuntu:
  Confirmed

Bug description:
  Attempting to slide the "Connection" switch in the gui to connect a
  bluetooth device fails initially -- the switch moves but "snaps back"
  by itself immediately.   Clicking on the switch flashes the "busy"
  indicator momentarily, but the switch does not move.   After a while,
  connecting succeeds.

  I don't know if the mouse input is not recognized until the "Nth"
  attempt, or else the connection was in-progress all along but the gui
  was not tracking that correctly.

  Please watch the attached video (use vlc).

  NOTE: This system is running a non-standard kernel 5.2 in order to
  circumvent other problems (see bug 1838180).

  Again, see the video; there is something wrong with how the GUI
  communicates with the kernel.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.04
  Package: bluez 5.50-0ubuntu2
  Uname: Linux 5.2.0-050200-generic x86_64
  ApportVersion: 2.20.10-0ubuntu27.1
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Jul 28 22:46:28 2019
  InstallationDate: Installed on 2019-02-06 (173 days ago)
  InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 
(20181017.3)
  InterestingModules: bluetooth
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: innotek GmbH VirtualBox
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.2.0-050200-generic 
root=UUID=75234048-11af-4901-9f89-2c32581f5dd3 ro quiet splash
  SourcePackage: bluez
  UpgradeStatus: Upgraded to disco on 2019-06-27 (31 days ago)
  dmi.bios.date: 12/01/2006
  dmi.bios.vendor: innotek GmbH
  dmi.bios.version: VirtualBox
  dmi.board.name: VirtualBox
  dmi.board.vendor: Oracle Corporation
  dmi.board.version: 1.2
  dmi.chassis.type: 1
  dmi.chassis.vendor: Oracle Corporation
  dmi.modalias: 
dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
  dmi.product.family: Virtual Machine
  dmi.product.name: VirtualBox
  dmi.product.version: 1.2
  dmi.sys.vendor: innotek GmbH
  hciconfig:
   
  rfkill:
   
  syslog:
   Jul 28 22:42:11 V-M-Ubuntu-Experimental NetworkManager[828]:   
[1564378931.7693] Loaded device plugin: NMBluezManager 
(/usr/lib/x86_64-linux-gnu/NetworkManager/1.16.0/libnm-device-plugin-bluetooth.so)
   Jul 28 22:42:22 V-M-Ubuntu-Experimental systemd[1]: Condition check resulted 
in Bluetooth service being skipped.

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[Touch-packages] [Bug 1720133] Re: USB 3.0 displays are black on Ubuntu after x.org update to 1.18.3 or newer

[Christopher M. Rogers]

Same result on Ubuntu 17.10 - black screen with cursor on USB monitor
running on displaylink driver as mentioned above.

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Title:
  USB 3.0 displays are black on Ubuntu after x.org update to 1.18.3 or
  newer

Status in xorg package in Ubuntu:
  Confirmed

Bug description:
  [Impact]

   * This impacts all Ubuntu releases which received an update of x.org
  to 1.18.3 or newer, i.e. Ubuntu 16.04, 16.10, 17.04 & 17.10

   * End users are unable to use their USB displays unless they
  workaround the problem which currently involves disabling pageflip for
  modesetting in x.org.conf file

   * The fix which has been submitted to x.org extends blacklisting
  mechanism so the EVDI kernel module which is essential for DisplayLink
  USB 3.0 devices to work is correctly recognised by x.org. Then the
  PRIME sync is disabled in such case; The patch can be found here:
  
https://cgit.freedesktop.org/xorg/xserver/commit/?id=fbd80b2c8ebe9fd41229dc5438524d107c071ff1

  [Test Case]

  1. On a PC device with Ubuntu install DisplayLink SW for Ubuntu v1.3.54 
downloaded from http://www.displaylink.com/downloads/ubuntu. Detailed 
requirements and instructions can be found here:  
  2. Plug in a DisplayLink USB 3.0 compatible device, e.g. Dell D3100 docking 
station
  3. Plug in an external monitor (HDMI or DisplayPort) to the docking station

  Expected result: 
  The external monitor should light up and show the desktop

  Actual result: 
  The monitor remains black or shows frozen desktop.

  [Regression Potential]

   * The patchset extends number of modules for which x.org changes its
  functionality. It checks if "evdi" string is in the syspath so it is
  quite unlikely there would be any impact on anything else then USB 3.0
  displays which use EVDI module.

  [Other Info]
   
   * The patch has been applied to Ubuntu x.org source code built and tested.

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