On Mon, Mar 29, 2004 at 08:57:22AM +1000, Benjamin Herrenschmidt wrote: > On Mon, 2004-03-29 at 04:00, Vicente Herranz P�rez wrote: > > Hi, > > > > I've an Aluminium Powerbook G4 with a 15" display and an ATI Mobility > > Radeon 9600 graphic card. It works properly right now, buy I decided to > > become entangled in the configuration of a second screen as dual > > display. My second screen is a 17" Philips 170B2T with a maximum > > resolution of 1280x1024, while the resolution of the powerbook's screen > > is set to 1280x854. I've tried a XF86Config-4 file based on John Leach's > > one (http://www.johnleach.co.uk/documents/powerpc/), but although the > > powerbook's screen works properly, the second display prefers to show an > > awful lot of lines. After some attempts I've reached to discern > > something that resembles to icons and the cursor but nothing else. I > > suspect that the second display doesn't really work at 1280x1024. > > > > I would appreciate if somebody can help me. > > The external screen is a CRT or a TFT display ? If you are trying to > use the second output as DVI (and not with a DVI<->VGA adapter), then > there is a known problem with XFree using the correct digital output > of the ATI chip. Though it's possible to hack around... > > Ben.
Hi there, Thanks a lot for your comments. The display I am trying to set up is a 17" TFT screen. I have been trying both the DVI direct connection and the DVI/VGA adapter with no success at all. In fact, the display shows some sort of scrambled dessign where some parts of the Gnome desktop can be recognized (for example, a moving icon on the top bar). In fact, this problem is not restricted to de X's as I am also unable to see the console on the external display. Any other ideas?

