Bug#720289: iceweasel: Possible regression in WebGL Renderer: Blocked, looking for "Not Mesa"

[Larry Doolittle]

Package: iceweasel
Version: 17.0.8esr-1~deb7u1
Severity: normal

Dear Maintainer,

Upgrading stock wheezy from iceweasel 10.0.12esr-1 (on the CD)
to 17.0.8esr-1~deb7u1 (current security patch as of 2013-08-19)
breaks WebGL renderer detection, at least on my test machine with

Adapter Description: X.Org -- Gallium 0.4 on AMD ARUBA
Vendor ID: X.Org
Device ID: Gallium 0.4 on AMD ARUBA
Driver Version: 2.1 Mesa 8.0.5 

I am aware of bugzilla at mozillabug 734297
https://bugzilla.mozilla.org/show_bug.cgi?id=734297
and hope that didn't confuse me.

I checked the WebGL Renderer status (on the about:support page)
immediately before and after the upgrade. The "after" message is:

Blocked for your graphics driver version. Try updating your graphics driver to version Not Mesa or newer.

-- Package-specific info:

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

Name: Download YouTube Videos as MP4 user-script
Status: enabled

Name: Greasemonkey
Location: /usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/{e4a8a97b-f2ed-450b-b12d-ee082ba24781}
Package: xul-ext-greasemonkey
Status: enabled

-- Plugins information
Name: Gnome Shell Integration
Location: /usr/lib/mozilla/plugins/libgnome-shell-browser-plugin.so
Package: gnome-shell
Status: enabled


-- Addons package information
ii  gnome-shell    3.4.2-7      amd64        graphical shell for the GNOME des
ii  iceweasel      17.0.8esr-1~ amd64        Web browser based on Firefox
ii  xul-ext-grease 0.9.20-1     all          extension that enables customizat

-- System Information:
Debian Release: 7.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.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  libc6               2.13-38
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  libnspr4            2:4.9.2-1
ii  libnspr4-0d         2:4.9.2-1
ii  libsqlite3-0        3.7.13-1+deb7u1
ii  libstdc++6          4.7.2-5
ii  procps              1:3.3.3-3
ii  xulrunner-17.0      17.0.8esr-1~deb7u1

iceweasel recommends no packages.

Versions of packages iceweasel suggests:
ii  fonts-stix [otf-stix]  1.1.0-1
ii  libgssapi-krb5-2       1.10.1+dfsg-5+deb7u1
pn  mozplugger             <none>

Versions of packages xulrunner-17.0 depends on:
ii  libasound2                1.0.25-4
ii  libatk1.0-0               2.4.0-2
ii  libbz2-1.0                1.0.6-4
ii  libc6                     2.13-38
ii  libcairo2                 1.12.2-3
ii  libdbus-1-3               1.6.8-1+deb7u1
ii  libdbus-glib-1-2          0.100.2-1
ii  libevent-2.0-5            2.0.19-stable-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  libjpeg8                  8d-1
ii  libmozjs17d               17.0.8esr-1~deb7u1
ii  libnspr4                  2:4.9.2-1
ii  libnss3                   2:3.14.3-1
ii  libnss3-1d                2:3.14.3-1
ii  libpango1.0-0             1.30.0-1
ii  libpixman-1-0             0.26.0-4
ii  libsqlite3-0              3.7.13-1+deb7u1
ii  libstartup-notification0  0.12-1
ii  libstdc++6                4.7.2-5
ii  libvpx1                   1.1.0-1
ii  libx11-6                  2:1.5.0-1+deb7u1
ii  libxext6                  2:1.3.1-2+deb7u1
ii  libxrender1               1:0.9.7-1+deb7u1
ii  libxt6                    1:1.1.3-1+deb7u1
ii  zlib1g                    1:1.2.7.dfsg-13

Versions of packages xulrunner-17.0 suggests:
ii  libcanberra0  0.28-6
pn  libgnomeui-0  <none>

-- no debconf information