Bug#774298: iceweasel: Bad performances on Youtube

[Pierre Rudloff]

Package: iceweasel
Version: 36.0~a2+20141212004002-1~bpo70+1
Severity: normal

Dear Maintainer,

Youtube now defaults to the HTML5 player on Firefox Aurora.
With this player, I get really bad performances on IceWeasel 36.0a2. The video
is not smooth at all and it it makes the whole tab lag, especially when I mouse
my mouse over the video.

I can reproduce in safe mode.
I can't reproduce with upstream builds (Firefox Developer Edition 36.0a2).

Regards,



-- Package-specific info:

-- Extensions information
Name: Adblock Plus
Location: ${PROFILE_EXTENSIONS}/{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}.xpi
Status: enabled

Name: Default theme
Location: /usr/lib/iceweasel/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
Package: iceweasel
Status: enabled

Name: Firebug
Location: ${PROFILE_EXTENSIONS}/firebug at software.joehewitt.com.xpi
Status: enabled

Name: Français Language Pack locale
Location: /usr/lib/iceweasel/browser/extensions/langpack-fr at iceweasel.mozilla.org.xpi
Package: iceweasel-l10n-fr
Status: enabled

Name: Ghostery
Location: ${PROFILE_EXTENSIONS}/firefox at ghostery.com.xpi
Status: enabled

Name: Github Tweaks for Bugzilla
Location: ${PROFILE_EXTENSIONS}/jid0-AWShpy08txla2QGDYvv5bed4sjs at jetpack.xpi
Status: enabled

Name: HTTPS-Everywhere
Location: ${PROFILE_EXTENSIONS}/https-everywhere at eff.org
Status: enabled

Name: IPvFox
Location: ${PROFILE_EXTENSIONS}/ipvfox at dagger2-addons.mozilla.org.xpi
Status: enabled

Name: mozFR theme
Status: user-disabled

Name: pwgen - Password Generator
Location: ${PROFILE_EXTENSIONS}/pwgen at alouche.net.xpi
Status: enabled

Name: Saved Password Editor
Location: ${PROFILE_EXTENSIONS}/savedpasswordeditor at daniel.dawson.xpi
Status: enabled

Name: Screengrab  (fix version)
Location: ${PROFILE_EXTENSIONS}/{02450914-cdd9-410f-b1da-db004e18c671}.xpi
Status: enabled

Name: webcompat.com reporter
Location: ${PROFILE_EXTENSIONS}/jid1-mjpB54bRzP9Zxw at jetpack.xpi
Status: enabled

Name: YSlow
Location: ${PROFILE_EXTENSIONS}/yslow at yahoo-inc.com.xpi
Status: enabled

-- Plugins information
Name: iTunes Application Detector
Location: /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so
Package: rhythmbox-plugins
Status: enabled

Name: Shockwave Flash (11.2.202.425)
Location: /usr/lib/flashplugin-nonfree/libflashplayer.so
Status: enabled


-- Addons package information
ii  iceweasel      36.0~a2+2014 amd64        Web browser based on Firefox
ii  iceweasel-l10n 1:36.0~a2+20 all          French language package for Icewe
ii  rhythmbox-plug 2.97-2.1     amd64        plugins for rhythmbox music playe

-- System Information:
Debian Release: 7.7
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.2.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages iceweasel depends on:
ii  debianutils               4.3.2
ii  fontconfig                2.9.0-7.1
ii  libasound2                1.0.25-4
ii  libatk1.0-0               2.4.0-2
ii  libc6                     2.13-38+deb7u6
ii  libcairo2                 1.12.2-3
ii  libdbus-1-3               1.6.8-1+deb7u5
ii  libdbus-glib-1-2          0.100.2-1
ii  libevent-2.0-5            2.0.19-stable-3
ii  libffi5                   3.0.10-3
ii  libfontconfig1            2.9.0-7.1
ii  libfreetype6              2.4.9-1.1
ii  libgcc1                   1:4.7.2-5
ii  libgdk-pixbuf2.0-0        2.26.1-1
ii  libglib2.0-0              2.33.12+really2.32.4-5
ii  libgtk2.0-0               2.24.10-2
ii  libhunspell-1.3-0         1.3.2-4
ii  libpango1.0-0             1.30.0-1
ii  libsqlite3-0              3.7.13-1+deb7u1
ii  libstartup-notification0  0.12-1
ii  libstdc++6                4.7.2-5
ii  libx11-6                  2:1.5.0-1+deb7u1
ii  libxcomposite1            1:0.4.3-2
ii  libxdamage1               1:1.1.3-2
ii  libxext6                  2:1.3.1-2+deb7u1
ii  libxfixes3                1:5.0-4+deb7u1
ii  libxrender1               1:0.9.7-1+deb7u1
ii  libxt6                    1:1.1.3-1+deb7u1
ii  procps                    1:3.3.3-3
ii  zlib1g                    1:1.2.7.dfsg-13

iceweasel recommends no packages.

Versions of packages iceweasel suggests:
pn  fonts-mathjax          <none>
pn  fonts-oflb-asana-math  <none>
ii  fonts-stix [otf-stix]  1.1.0-1
ii  libcanberra0           0.28-6
ii  libgnomeui-0           2.24.5-2
ii  libgssapi-krb5-2       1.10.1+dfsg-5+deb7u2
pn  mozplugger             <none>

-- no debconf information