Mailinglist Archive: radeonhd (333 mails)

[Egbert Eich <eich@xxxxxxx>]

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 <pci_id>
3. Plug the EIZO into the other connector, run rhd_conntest <pci_id>
4. send us the output from both runs.

Thanks!

Cheers,
        Egbert.

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