ubuntu-sdk-bugs team mailing list archive

[Daniel van Vugt <daniel.van.vugt@xxxxxxxxxxxxx>]

To be absolutely sure you would need to:

1. Convert the display's EDID into binary from hex:

		00ffffffffffff004c2d090501000000
		30120103801009780aee91a3544c9926
		0f5054bdef80714f8100814081809500
		950fb3000101023a801871382d40582c
		4500a05a0000001e662150b051001b30
		40703600a05a0000001e000000fd0018
		4b1a5117000a202020202020000000fc
		0053414d53554e470a2020202020016f
		020327f14b901f041305140312202122
		2309070783010000e2000fe305030167
		030c001000b82d011d007251d01e206e
		285500a05a0000001e011d00bc52d01e
		20b8285540a05a0000001e011d801871
		1c1620582c2500a05a0000009e011d80
		d0721c1620102c2580a05a0000009e00
		0000000000000000000000000000001d

2. Use an EDID decoding tool to verify it yourself. Some are available
in the Ubuntu archive, but also you can google for online EDID decoders.

** No longer affects: xrandr (Ubuntu)

-- 
You received this bug notification because you are a member of Ubuntu
SDK bug tracking, which is subscribed to qtbase-opensource-src in
Ubuntu.
https://bugs.launchpad.net/bugs/1792167

Title:
  Display size detected incorrectly

Status in mutter package in Ubuntu:
  Invalid
Status in qtbase-opensource-src package in Ubuntu:
  Invalid

Bug description:
  My external monitor is detected as 7" although it is 32". All
  applications which use Qt auto scaling have huge controls!

  It seems like many users have the same problem
  (https://ubuntuforums.org/showthread.php?t=2390362) and thus disable
  Qt auto scaling. I think the solution should be to fix the size
  detection instead.

  It seems not related to the display server, compositor or window
  manager since the problem appeared in Ubuntu 17.04 (Mir, Unity) as
  well es 18.04 (Mutter, Gnome). I tried it with both Wayland and X (on
  Wayland).

  Further, it seems not related to graphics driver, since I personally
  use the open source driver with my internal Intel card, whereas
  someone else uses a proprietary Nvidia driver
  (https://askubuntu.com/q/1066879/206608).

  If it is in the wrong category, please move it / add the corresponding
  packages.

  If you need any further information to tackle the problem, just tell me!
  ---
  ProblemType: Bug
  ApportVersion: 2.20.9-0ubuntu7.3
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 18.04
  InstallationDate: Installed on 2017-09-05 (372 days ago)
  InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
  Package: qtbase-opensource-src
  PackageArchitecture: amd64
  Tags:  bionic
  Uname: Linux 4.18.7-041807-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom davfs2 dip docker lpadmin plugdev sambashare sudo vboxusers video voice
  _MarkForUpload: True

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