Transparent stuff very slow, hogs CPU

[Traumflug]

Just updated to 13.10 (beta) from 13.04 and found transparent stuff on the desktop to be extremely slow. For example, moving the cursor over an item in Unities application bar takes about 3 seconds to display the description of it. The bar it's self moves out of and back into its hide fast, though.

Opening Unities big search panel takes something like a full minute, making it unusable. While this is happening, running "top" in a remote terminal reports 100% CPU usage for compiz.

Other stuff, like moving windows, even a transparent terminal window, or playing videos works just fine. Actually, even a bit snappier than with 13.04.

My system:

mah@piccard:~$ compiz --version
Compiz 0.9.10.2
mah@piccard:~$ lsb_release -rd
Description: Ubuntu Saucy Salamander (development branch)
Release: 13.10
mah@piccard:~$ apt-cache policy compiz
compiz:
  Installiert: 1:0.9.10+13.10.20130927.1-0ubuntu1
  Installationskandidat: 1:0.9.10+13.10.20130927.1-0ubuntu1
  Versionstabelle:
 *** 1:0.9.10+13.10.20130927.1-0ubuntu1 0
        500 http://de.archive.ubuntu.com/ubuntu/ saucy/main amd64 Packages
        100 /var/lib/dpkg/status
mah@piccard:~$ uname -a
Linux piccard 3.11.0-9-generic #16-Ubuntu SMP Fri Sep 27 15:08:11 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
mah@piccard:~$ lspci
00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller (rev 02)
00:01.0 PCI bridge: Intel Corporation 82G33/G31/P35/P31 Express PCI Express Root Port (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82G33/G31 Express Integrated Graphics Controller (rev 02)
00:19.0 Ethernet controller: Intel Corporation 82562V-2 10/100 Network Connection (rev 02)
[rest snipped]

[Christopher Townsend (townsend)]

Hi Traumflug,

This looks like another duplicate of bug #1222602. This is due to a bad bug in Mesa 9.2. Please try the workaround in https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1222602/comments/6 and see if it helps. Please report back here and let me know.

Thanks!

[Traumflug (mah-jump-ing)]

Yes, this workaround works and brings the description flags, search panel and restart dialog back to expected speed.