Radeon 7500 and AIGLX on Edgy?

[Marius Gedminas]

On Tue, Oct 10, 2006 at 02:48:31PM +0300, Marius Gedminas wrote:
> I've a Radeon Mobilty M7 LW aka Radeon 7500.  I'd like some eye candy
> (drop-shadows, truly translucent windows).

I have achieved my goal with xcompmgr by adding 'xcompmgr -cCfF -o .2 -D 8'
to the startup program list for my GNOME session.  It doesn't use
OpenGL, which is a bonus, because I want to use a dual-head MergedFB
desktop, and a desktop 2304 pixels wide is beyond the capabilites of the
hardware 3D engine.  The performance is acceptable (workspace switches
are somewhat slow when fading is enabled).

I have also figured out how to use Compiz with all the wacky wobbly
windows and rotating cubes, but since I have to choose between dual-head
and wackyness, I'll choose dual-head.

> First of all, does anyone have that on this hardware?  Is the
> performance acceptable?D 

Thanks to Emmanuel Touzery's encouraging reply I found the answer: yes,
the performance is acceptable if I disable the 'blur' compiz plugin.  I
also disabled the 'water' plugin because it doesn't work for me
(the error is "compiz.real: water: GL_ARB_fragment_program is missing").

> There are two ways to get the candy: Xgl and AIGLX.  Of the two AIGLX
> seems easier to set up.  I've followed the instructions here:
> 
>   https://help.ubuntu.com/community/CompositeManager/AIGLXOnEdgy
> 
...
> 
> If I try to start compiz, I get this error:
> 
>   $ gnome-window-decorator &  compiz --replace gconf &
>   libGL warning: 3D driver claims to not support visual 0x4b
>   compiz.real: GLX_EXT_texture_from_pixmap is missing
>   compiz.real: Failed to manage screen: 0
>   compiz.real: No manageable screens found on display :0.0

That was because compiz needs two extra command-line arguments to work
with AIGLX (instead of Xgl):

   $ gnome-window-decorator &
   $ compiz --replace --indirect-rendering --strict-binding gconf &

I've updated
https://help.ubuntu.com/community/CompositeManager/ConfiguringCompiz
to mention this.

I have also had to disable MergedFB in my xorg.conf, otherwise large
parts of the screen weren't redrawn at all, even after I switched to
1024x768 clone mode desktop with xrandr.

(Actually, just the presence of MergedFB doesn't hurt: it is enabled by
default and in fact necessary to get the correct video timings for the
external VGA output.  The presence of MetaModes and/or MergedDPI
options, however, make compiz unusable.)

Marius Gedminas
-- 
> find /lib/modules/2.4.17-expt/kernel/ -type f|while read i; do insmod $i; done
You're sick.  I like you.
	-- Andrew Morton on lkml
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 189 bytes
Desc: Digital signature
URL: <https://lists.ubuntu.com/archives/ubuntu-users/attachments/20061011/7a983527/attachment.sig>