Package: libcairo2
Version: 1.12.0-2
Severity: important
Justification: iceweasel becomes unusably unresponsive on some webpages

With libcairo2 in sid (1.12.0-2) webpages rendered in iceweasel that use
javascript "fade transitions" - a fade between one image and another -
are rendered like a slideshow instead of a smooth animation, and the
browser becomes completely unresponsive for the duration (and is in fact
quite hard to wrestle back control)

They behave correctly - smooth animation, and a responsive browser - by
downgrading to the version of libcairo2 in testing/wheezy (1.10.2-7).
So it seems like a regression in cairo 1.12, hence reporting it here,
although for all I know it might be a problem in how iceweasel uses
cairo that is only exposed by the new version.

Examples of pages with such transitions are www.penny-arcade.com or
www.mediafire.com. For what it is worth I am using nouveau as a graphics
driver, with no opengl extensions (libgl1-mesa-dri is not installed)

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-2-amd64 (SMP w/1 CPU core)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages libcairo2 depends on:
ii  libc6              2.13-27
ii  libfontconfig1     2.8.0-3.1
ii  libfreetype6       2.4.9-1
ii  libpixman-1-0      0.24.4-1
ii  libpng12-0         1.2.49-1
ii  libx11-6           2:1.4.4-4
ii  libxcb-render0     1.8.1-1
ii  libxcb-shm0        1.8.1-1
ii  libxcb1            1.8.1-1
ii  libxrender1        1:0.9.6-2
ii  multiarch-support  2.13-27
ii  zlib1g             1:1.2.6.dfsg-2

libcairo2 recommends no packages.

libcairo2 suggests no packages.

-- 
http://rjy.org.uk/



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