Bug#557484: gnome-shell: causes slow rendering in graphic-intensive apps

brian m. carlson sandals at crustytoothpaste.ath.cx
Sun Nov 22 12:12:01 UTC 2009

Package: gnome-shell
Version: 2.28.1~git20091117-1
Severity: normal

I normally use compiz, but decided to give gnome-shell a try.  However,
when I loaded simutrans, which is a fairly graphic-intensive program (it
uses SDL but not OpenGL), it runs much more slowly than under compiz.
The difference is easily noticeable: whereas simutrans normally takes
about a second to load a saved game, under gnome-shell it takes two to
three times that long.

Another example is meritous: there is noticable lag in the graphics at
some points; the rendering is not smooth as it is under compiz.  This is
present even when displaying the splash screen and menu (look at the
speed of the background animation).

My graphics card is

  00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
  00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)

I am using i915 with kernel modesetting on.

If you need me to provide more information or test something, please let
me know.

-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.31-1-amd64 (SMP w/2 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 gnome-shell depends on:
ii  gconf2              2.28.0-1             GNOME configuration database syste
ii  gir1.0-clutter-1.0  1.0.8-1              GObject introspection data for the
ii  gir1.0-freedesktop  0.6.5-4              Introspection data for some FreeDe
ii  gir1.0-glib-2.0     0.6.5-4              Introspection data for GLib, GObje
ii  gir1.0-gtk-2.0      0.6.5-3              GObject introspection data for the
ii  gir1.0-mutter-2.28  2.28.1~git20091024-1 GObject introspection data for Mut
ii  libatk1.0-0         1.28.0-1             The ATK accessibility toolkit
ii  libc6               2.10.1-7             GNU C Library: Shared libraries
ii  libcairo2           1.8.8-2              The Cairo 2D vector graphics libra
ii  libclutter-1.0-0    1.0.8-1              Open GL based interactive canvas l
ii  libcroco3           0.6.2-1              a generic Cascading Style Sheet (C
ii  libdbus-1-3         1.2.16-2             simple interprocess messaging syst
ii  libdbus-glib-1-2    0.82-2               simple interprocess messaging syst
ii  libfontconfig1      2.6.0-4              generic font configuration library
ii  libfreetype6        2.3.11-1             FreeType 2 font engine, shared lib
ii  libgconf2-4         2.28.0-1             GNOME configuration database syste
ii  libgirepository1.0- 0.6.5-4              Library for handling GObject intro
ii  libgjs0             0.4-3                Mozilla-based javascript bindings 
ii  libgl1-mesa-glx [li 7.6-1                A free implementation of the OpenG
ii  libglib2.0-0        2.22.2-2             The GLib library of C routines
ii  libgnome-desktop-2- 2.28.1-3             Utility library for loading .deskt
ii  libgnome-menu2           an implementation of the freedeskt
ii  libgstreamer0.10-0  0.10.25-3            Core GStreamer libraries and eleme
ii  libgtk2.0-0         2.18.3-1             The GTK+ graphical user interface 
ii  libmozjs2d            The Mozilla SpiderMonkey JavaScrip
ii  libnspr4-0d         4.8.2-1              NetScape Portable Runtime Library
ii  libpango1.0-0       1.26.1-1             Layout and rendering of internatio
ii  librsvg2-2          2.26.0-1             SAX-based renderer library for SVG
ii  libstartup-notifica 0.10-1               library for program launch feedbac
ii  libx11-6            2:1.2.2-1            X11 client-side library
ii  libxcomposite1      1:0.4.0-4            X11 Composite extension library
ii  libxdamage1         1:1.1.1-4            X11 damaged region extension libra
ii  libxext6            2:1.0.4-1            X11 miscellaneous extension librar
ii  libxfixes3          1:4.0.3-2            X11 miscellaneous 'fixes' extensio
ii  libxml2             2.7.6.dfsg-1         GNOME XML library
ii  mesa-utils          7.6-1                Miscellaneous Mesa GL utilities
ii  mutter              2.28.1~git20091024-1 lightweight GTK+ window manager
ii  pkg-config          0.22-1               manage compile and link flags for 
ii  python              2.5.4-2              An interactive high-level object-o
ii  zlib1g              1:    compression library - runtime

Versions of packages gnome-shell recommends:
ii  xserver-xephyr                2:1.6.5-1  nested X server

gnome-shell suggests no packages.

-- no debconf information

brian m. carlson / brian with sandals: Houston, Texas, US
+1 713 440 7475 | http://crustytoothpaste.ath.cx/~bmc | My opinion only
OpenPGP: RSA v4 4096b 88AC E9B2 9196 305B A994 7552 F1BA 225C 0223 B187
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