Matthias Hopf writes:
On Feb 19, 08 15:14:42 +0100, Patrick Voigt wrote:
I'm trying to get the projector Panasonic PT-AX200E to work on my Asus M2A-VM-HDMI board using a HDMI connection. I setup up a dual monitor configuration according to the example given in the wiki. The other monitor is connected to the board via DVI. So I want to use to digital outputs simultaneously. In theory this should work using this hardware.
Unfortunately, it will only work in clone mode, always:
DVI-D_1 disconnected (normal) RANDR_OUTPUT_NUMBER: 2 (0x00000002)
DVI-D_2 connected 1280x1024+0+0 (0x47) normal (normal) 376mm x 301mm RANDR_OUTPUT_NUMBER: 2 (0x00000002)
Connectors with the same output number can only display cloned images. This is due to hardware(!) wiring on the boards, the board maker used the same output for different connectors. Bad, ugly. These connectors cannot even be switched on and off independently, and this can result in *very* obscure behavior. The RandR model isn't flexible enough to reflect this.
Although we may not interpret the SupportedDevice table correctly with respect to DFP2 (as this is the first device I've come accross which supports DFP2 and we have not received any information regarding this until yesterday). Still what I'm seeing here after some more thorough investigation is that indeed both outputs are driven by the LVTMA. They listen on different DDC lines, the HDMI port currently only lights up when HDMI is connected at boot time. I'll dive into some more investigation using information I've just received from ATI. I hope that this information will soon be made public as the information on RS690 that has been published does not cover the outputs.
I'm still thinking about misusing the possible_clones field for that, but that would restrict us to having only one cloned-only pair (two in some circumstances), and wouldn't allow us to use cloning in all situations where it actually would make sense.
(WW) RADEONHD(0): RandR: While switching off DVI-D_1: output TMDS B is also used by DVI-D_2 - ignoring
This line in the log indicates this (hardware) configuration.
Which isn't that far off from what I'm seeing on my RS690 board. Cheers, Egbert. -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org