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[Bug 1882853] Re: No video output if top of primary monitor is below top of secondary monitor

To: ubuntu-sdk-bugs@xxxxxxxxxxxxxxxxxxx
From: Sebastian Ramacher <1882853@xxxxxxxxxxxxxxxxxx>
Date: Thu, 23 Jul 2020 19:28:01 -0000
Reply-to: Bug 1882853 <1882853@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Package changed: vlc (Ubuntu) => qtbase-opensource-src (Ubuntu)

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https://bugs.launchpad.net/bugs/1882853

Title:
  No video output if top of primary monitor is below top of secondary
  monitor

Status in qtbase-opensource-src package in Ubuntu:
  New

Bug description:
  Area where video should be is, depending on the video output mode
  selected: a darkened VLC logo, a copy of the bottom toolbar in the top
  left corner, or just plain black. Resizing the window causes the
  toolbar to "ghost" on top of where the video should be.

  Exact monitor configuration if needed (xrandr CLI): --dpi 192 \
  			--output DP-0 --mode 1920x1080 --pos 3840x0 --rotate left --scale 2x2 \
  			--output DP-2 --mode 3840x2160 --pos 0x1288

  Changing the last position flag to 0x0 "fixes" the problem at the cost
  of cursor position being "wrong" when transitioning between monitors.

  OBS has a very similar issue, see here:
  https://bugs.launchpad.net/bugs/1876612

  Which makes me think it may in fact be a Qt bug.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: vlc 3.0.9.2-1
  ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34
  Uname: Linux 5.4.0-33-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.2
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: GNOME
  Date: Tue Jun  9 17:55:37 2020
  InstallationDate: Installed on 2020-05-03 (37 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no username)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: vlc
  UpgradeStatus: No upgrade log present (probably fresh install)

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