F8x86_64 on the Acer Ferrari 3400LMi
+ Svideo or VGA0 + Svideo. This is a common limitation for most graphics
hardware.
Note:
The output names differ depending on the driver used. The names used in
this document relate to the
radeon
driver. If you use some other driver use
xrandr q
to find out the proper names (provided that it supports RandR).
10.1.1 The
radeon
driver
Support for the ATI Mobility Radeon 9700 chip in the Ferrari is provided by the
radeon
driver. This driver supports all the features we want: the RandR
extension (v 1.2), 3D acceleration (DRI) and TVout.
There is also the
ati
driver, not to be confused with the proprietary
fglrx
driver. However, the
ati
driver is only a wrapper that autodetects ATI cards and
load the appropriate driver. In our case that will result in the
radeon
driver being
loaded.
The main improvement in Xorg 7.2 is the arrival of version 1.2 of the X RandR
(Resize and Rotate) extension. It provides automatic discovery of modes together
with the ability to configure outputs dynamically. As of today only a few drivers
support RandR 1.2. Fortunately, the
radeon
driver is one of them.
10.1.2 Simple configuration
If you are familiar with X configuration and take a look at the default
/etc/X11/xorg.conf
file, generated during the installation you will notice a
significant change. Many of the traditional settings, sync and refresh rates,
modes and modelines, are gone. All these settings are now autodetected by
RandR 1.2 and should only be present if you want to override the detected values.
In some rare situations this might be needed, e.g. when an external monitor
reports incorrect values.
In order to get full dualhead support you only need to add
one
line to the default
X configuration. If you want to optimize 3D acceleration you need another line.
That is a total of
two
lines for a full fledge X configuration supporting all features.
Quite an improvement. Thank you all nice X guys!
The X server log file
/var/log/Xorg.0.log
will be your valuable companion
when it comes to troubleshooting or just checking what configuration that is
autodetected.
For reference my
xorg.conf
is presented in
Appendix
A
.
10.2 Dual-Head
The X Resize and Rotate (RandR) extension introduces a significant shift in dual
head configuration with its version 1.2. All your setting may now be altered on
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