Public bug reported:

After updating my Ubuntu 12.04 (amd64) to kernel 3.2.0-31 and  fglrx-
updates 2:8.982-0ubuntu0.1 my X11 is *not* accelerated any more (e.g. no
desktop/windows effects). It feels very sluggish.

In /var/log/Xorg.0.log I found the following:

[    33.043] (==) fglrx(0): Buffer Tiling is ON
[    33.044] (II) Loading sub module "fglrxdrm"
[    33.044] (II) LoadModule: "fglrxdrm"
[    33.044] (II) Loading 
/usr/lib/x86_64-linux-gnu/xorg/extra-modules/extra-modules.dpkg-tmp/modules/linux/libfglrxdrm.so
[    33.044] (II) Module fglrxdrm: vendor="FireGL - AMD Technologies Inc."
[    33.044]    compiled for 1.4.99.906, module version = 8.98.2
[    33.045] ukiDynamicMajor: failed to open /proc/ati/major
[    33.045] ukiDynamicMajor: failed to open /proc/ati/major
[    33.045] (**) fglrx(0): NoAccel = NO
[    33.045] (**) fglrx(0): AMD 2D Acceleration Architecture enabled
[    33.045] (--) fglrx(0): Chipset: "ATI Radeon HD 5450     " (Chipset = 
0x68f9)
[...]
[    33.968] (EE) fglrx(0): atiddxDriScreenInit failed, GPS not been 
initialized. 
[    33.968] (WW) fglrx(0): 
***********************************************************
[    33.968] (WW) fglrx(0): * DRI initialization failed                         
      *
[    33.968] (WW) fglrx(0): * kernel module (fglrx.ko) may be missing or 
incompatible *
[    33.968] (WW) fglrx(0): * 2D and 3D acceleration disabled                   
      *
[    33.968] (WW) fglrx(0): 
***********************************************************
[...]
[    34.949] (EE) fglrx(0): XMM failed to open CMMQS connection.(EE) fglrx(0): 
[    34.949] (EE) fglrx(0): XMM failed to initialize
[...]
[    37.906] [glesx] __glESXExtensionInit: No GL ES2.0 capable screen found!
[    37.918] (II) AIGLX: Screen 0 is not DRI capable

** Affects: fglrx-installer-updates (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1048508

Title:
   fglrx-updates 2:8.982-0ubuntu0.1: DRI initialization failed (with
  3.2.0-31 kernel)

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