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On 2014-01-14T17:20:18+00:00 csslayer wrote:

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:26.0) Gecko/20100101 
Firefox/26.0 (Beta/Release)
Build ID: 20131221082715

Steps to reproduce:

I'm using two screen with setup 3200x1800 on the left and 1600x1200 on the 
right under linux. DPI is set to 228 so by default right click menu height 
would only be a little bit smaller than 1200.
When devPixelsPerPx is larger than 1, firefox seems to think the screen size 
also times the factor. Which makes window in the right screen think they are in 
the left screen.


Actual results:

in my screen resolution setup,  if devPixelsPerPx is set to 1.2, after
right clicking on a window in 1600x1200 screen, clicking on the left
part would show menu in the first screen, while the right half click
would show menu in the right screen.

if devPixelsPerPx is set to some larger number (for instance 2), all
popup menu that should be shown in the right screen would be shown in
the left screen.


Expected results:

menu appears in correct screen.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/0

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On 2015-03-18T07:01:01+00:00 Xidorn+moz wrote:

Created attachment 8579169
screenshot

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/3

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On 2015-03-18T07:10:23+00:00 Xidorn+moz wrote:

It seems this bug has been fixed in Aurora.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/4

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On 2015-07-28T17:39:02+00:00 Liam Middlebrook wrote:

Created attachment 8639968
2015-07-28-103032_5520x3840_scrot.png

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/5

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On 2015-07-28T17:46:16+00:00 Liam Middlebrook wrote:

Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:38.0) Gecko/20100101
Firefox/38.0

On the black penciled line (in the image I've attached above) is where
the separation occurs for a `devPixelsPerPx` value of 1.2. I've only
encountered this issue on `devPixelsPerPx` values that are between 1 and
2. It appears that this invisible line of separation changes it's x
position on a linear scale based on the value of `devPixelsPerPx`

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/6

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On 2015-12-30T11:27:33+00:00 6-adv wrote:

Reproduceable on Firefox 43.0 for any values of devPixelsPerPx between 1
and 2 (excluding 1.0 and 2.0).

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/9

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On 2016-01-11T09:16:59+00:00 Cirdeiliviu wrote:

*** Bug 1068390 has been marked as a duplicate of this bug. ***

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/10

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On 2016-01-15T18:47:30+00:00 Overholt-u wrote:

I see this on Windows, too. It feels like it *started* happening with a
multi-dpi setup but now I'm seeing it without an external monitor
connected, too.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/11

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On 2016-01-15T18:56:54+00:00 Overholt-u wrote:

William, is this a DOM thing or a Toolkit (?) thing?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/12

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On 2016-01-15T20:46:01+00:00 R-william wrote:

I don't see anything that indicates this is a DOM thing. My guess is
that we are getting some numbers wrong in
layout/xul/nsMenuPopupFrame.cpp

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/13

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On 2016-02-17T08:06:15+00:00 Xidorn+moz wrote:

jfkthame, as you are recently working on Windows multi-dpi support, I
suppose you have some insight around this issue.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/14

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On 2016-02-17T09:19:21+00:00 Jfkthame wrote:

It's possible the upcoming patches in bugs like 1240533 and 1247335 may
help here. If not, I'll try to look into it further; I think there may
be additional issues specific to resolution support in the Linux widget
backend.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/15

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On 2016-05-25T18:43:19+00:00 Rick-ramstetter+github wrote:

Confirming on Ubuntu 16.04, Firefox 46.0.1 X86-64.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/16

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On 2018-05-20T00:35:10+00:00 Jhana2017 wrote:

This seem to be a duplicate of 61000

Reply at:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1321903/comments/17


** Changed in: firefox
       Status: Unknown => Confirmed

** Changed in: firefox
   Importance: Unknown => Medium

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to firefox in Ubuntu.
https://bugs.launchpad.net/bugs/1321903

Title:
  location box dropdown displays on wrong monitor

Status in Mozilla Firefox:
  Confirmed
Status in firefox package in Ubuntu:
  New

Bug description:
  if I have a firefox window toward the left side of my right monitor,
  when I type something in the location box, the dropdown shortcuts
  appear on the rightmost edge of the left monitor.  If i move the
  firefox window further toward the middle/right side of the right
  screen, it appears below the location box as it should.  The boundary
  appears to be around 1450 pixels from the left hand side of the right
  screen.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: firefox 30.0+build1-0ubuntu0.14.04.3
  ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
  Uname: Linux 3.13.0-27-generic x86_64
  NonfreeKernelModules: nvidia wl
  AddonCompatCheckDisabled: False
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  jbarnett   2982 F.... pulseaudio
   /dev/snd/controlC0:  jbarnett   2982 F.... pulseaudio
   /dev/snd/controlC1:  jbarnett   2982 F.... pulseaudio
  BuildID: 20140428193813
  Channel: Unavailable
  CurrentDesktop: GNOME
  Date: Wed May 21 12:35:18 2014
  Extensions: extensions.sqlite corrupt or missing
  ForcedLayersAccel: False
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  IncompatibleExtensions: Unavailable (corrupt or non-existant 
compatibility.ini or extensions.sqlite)
  InstallationDate: Installed on 2014-02-24 (86 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha amd64 (20140218)
  IpRoute:
   default via 10.9.0.1 dev wlan0  proto static
   10.9.0.0/23 dev wlan0  proto kernel  scope link  src 10.9.0.55  metric 9
  Locales: extensions.sqlite corrupt or missing
  PrefSources:
   prefs.js
   
/usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/ubu...@ubuntu.com/defaults/preferences/001ubuntu-gnome-mods.js
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  Profiles: Profile0 (Default) - LastVersion=29.0/20140428193813 (In use)
  RunningIncompatibleAddons: False
  SourcePackage: firefox
  Themes: extensions.sqlite corrupt or missing
  UpgradeStatus: No upgrade log present (probably fresh install)
  WifiSyslog:

  dmi.bios.date: 10/18/2013
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP112.88Z.0138.B02.1310181745
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-2BD1B31983FE1663
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro11,3
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-2BD1B31983FE1663
  dmi.modalias: 
dmi:bvnAppleInc.:bvrMBP112.88Z.0138.B02.1310181745:bd10/18/2013:svnAppleInc.:pnMacBookPro11,3:pvr1.0:rvnAppleInc.:rnMac-2BD1B31983FE1663:rvrMacBookPro11,3:cvnAppleInc.:ct10:cvrMac-2BD1B31983FE1663:
  dmi.product.name: MacBookPro11,3
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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