[Bug 1407882] [NEW] Firefox won't automatically adjust the toolbar / tab and content size under high resolution environment in Ubuntu 14.04.1

[Po-Hsu Lin]

Public bug reported:

Steps to reproduce:

1. Install Ubuntu 14.04.1 + update + AMD video driver on a 3840x2160 high-resolution laptop
2. Boot to desktop with the highest resolution (3840x2160)
2. Open Firefox browser, ,make sure that it is on the latest version (34.0)


Actual results:

Toolbar / tab is too small, and the content size needs to be manually
enlarged.


Expected results:

Toolbar / tab and the content size should be larger in this high
resolution environment.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: firefox 34.0+build2-0ubuntu0.14.04.1
ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
Uname: Linux 3.13.0-43-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  ubuntu     1664 F.... pulseaudio
 /dev/snd/controlC1:  ubuntu     1664 F.... pulseaudio
BuildID: 20141127111021
CRDA:
 country TW:
 	(2402 - 2472 @ 40), (3, 27)
 	(5270 - 5330 @ 40), (3, 17), DFS
 	(5735 - 5815 @ 40), (3, 30)
Channel: Unavailable
CurrentDesktop: Unity
Date: Tue Jan  6 02:48:38 2015
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 2015-01-05 (0 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
IpRoute:
 default via 10.101.46.1 dev wlan0  proto static 
 10.101.46.0/24 dev wlan0  proto kernel  scope link  src 10.101.46.53  metric 9
Locales: extensions.sqlite corrupt or missing
Plugins:
 iTunes Application Detector - /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so (rhythmbox-mozilla)
 VLC Multimedia Plugin (compatible Videos 3.10.1) - /usr/lib/mozilla/plugins/libtotem-cone-plugin.so (totem-mozilla)
 DivX® Web Player - /usr/lib/mozilla/plugins/libtotem-mully-plugin.so (totem-mozilla)
 Windows Media Player Plug-in 10 (compatible; Videos) - /usr/lib/mozilla/plugins/libtotem-gmp-plugin.so (totem-mozilla)
 QuickTime Plug-in 7.6.6 - /usr/lib/mozilla/plugins/libtotem-narrowspace-plugin.so (totem-mozilla)
PrefSources: prefs.js
Profiles: Profile0 (Default) - LastVersion=34.0/20141127111021
RelatedPackageVersions:
 rhythmbox-mozilla 3.0.2-0ubuntu2
 totem-mozilla     3.10.1-1ubuntu4
RunningIncompatibleAddons: False
SourcePackage: firefox
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/19/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A00
dmi.board.name: BBE4C1
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvrA00:bd11/19/2014:svnDellInc.:pnInspiron7548:pvrA00:rvnDellInc.:rnBBE4C1:rvrA00:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Inspiron 7548
dmi.product.version: A00
dmi.sys.vendor: Dell Inc.

** Affects: firefox
     Importance: Unknown
         Status: Unknown

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: 201410-15952 amd64 apport-bug taipei-lab trusty

** Attachment added: "High-res.png"
   https://bugs.launchpad.net/bugs/1407882/+attachment/4292740/+files/High-res.png

** Bug watch added: Mozilla Bugzilla #1118140
   https://bugzilla.mozilla.org/show_bug.cgi?id=1118140

** Also affects: firefox via
   https://bugzilla.mozilla.org/show_bug.cgi?id=1118140
   Importance: Unknown
       Status: Unknown

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Title:
   Firefox won't automatically adjust the toolbar / tab and content size
  under high resolution environment in Ubuntu 14.04.1

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