MergedFB and multiple external monitors

Martin Langhoff martin.langhoff at
Wed Jan 3 12:26:53 PST 2007

On 1/4/07, Alex Deucher <alexdeucher at> wrote:
> You have to force crtc2 on if no monitor is connected (Option
> "MergedFB" "true") and specify hsync and vrefresh settings for crtc2
> (CRT2hsync and CRT2vrefresh). The modes will be rejected unless the
> monitor can support them.  See the radeon man page for more info.

Now I see the light... I had MergedFB true and several metamodes. Now
I've added CRT2hsync and CRT2vrefresh set to some low standard values
and it works. Starting xorg without an external monitor primes the
metamodes correctly.



More information about the Xorg-driver-ati mailing list