External monitor on TiBook

[Rodolfo Giometti <giometti@linux.it>]

Hi,

I just got a new powerbook 17" and I run on it Xfree 4.3.99.12 (DRI
trunk) at 1440x900 with Linux 2.6.5-rc3-ben0.

For my job I also need to use external monitor so I used a
XF86Config-4 that defines a dual head configuration (xinerama) but I
get a strange beaviuor... I see two screen but on the external monitor
all images as distorted but the cursor! It seems that X use the
resolution 1440x900 in both monitors instead of using 1440x900 on the
LCD and 1024x768 on the external monitor.

Using lscpi I get:

   giometti@hulk[99%]:~$ lspci | grep VGA
   0000:00:10.0 VGA compatible controller: ATI Technologies Inc RV350 [Mobility
+Radeon 9600 M10]

Please, can someone suggest me some tricks? :)

Ciao,

Rodolfo