Kevin Elliott writes:

Hello,

Just bought a new HD4850 and having all troubles getting dual head to work. Both monitors are connected to the DVI ports on the card, one is a Eizo the other a Samsung. The Eizo monitor works just fine, but the Samsung is a problem.The Samsung displays during boot, and with the default fbdev driver, but using the radeonhd driver it will not display.

The weird thing is in the Xorg.0.log it reports disconnected for the DVI port. On the wiki it suggests trying HPD Swap option, this indeed does work and the Samsung starts to display, but infuriatingly the Eizo stops displaying. Both will not display simultaneously.

If I switch to an analog cable to the Samsung then both display and dual-head does work.

I am also having similar difficulties with the ATI fglrx driver, it too wont display a big desktop on both monitors.

OK, so either one HPD line doesn't work or one monitor doesn't work with HPD. Please try the following: 1. Unplug both monitors. 2. Plug the EIZO into one connector, run rhd_conntest 3. Plug the EIZO into the other connector, run rhd_conntest 4. send us the output from both runs. Thanks! Cheers, Egbert. -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org