That should be able to run dual digital displays. But it may require the mad driver to do it. It should be a shared ramdac and gpu. So unless the did something weird on port it should work with the right driver in play.

On Monday, November 4, 2013, der.hans wrote:

Am 04. Nov, 2013 schwätzte Mike Bushroe so:

moin moin,

because there is so much difference in how they implement VGA (limited
resolution, analog out, sync pulses, etc) and digital they many "dual head"
display drivers have one of each to make sure that what ever type of
display you have, they can drive at least one. So I fear that you quest for
2 digital displays is likely to fail, or require new hardware, not just new
software.

Ah, so one chip for digital that can feed one display and another chip for
analog. Kinda what I was figuring.

What are you using for video? X? You might need Xinerama to get full use of
both screens.

I would prefer to use xrandr. Besides, Xinerama is so 2000's :).

In either case, I still think it needs to be able to drive that much
display. Not sure why the proprietary driver can and the Free Software
driver can't.

01:05.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI
RS780L [Radeon HD 3000] (prog-if 00 [VGA controller])
Subsystem: Micro-Star International Co., Ltd. Device 7501
Flags: bus master, fast devsel, latency 0, IRQ 18
Memory at d0000000 (32-bit, prefetchable) [size=256M]
I/O ports at c000 [size=256]
Memory at fe8f0000 (32-bit, non-prefetchable) [size=64K]
Memory at fe700000 (32-bit, non-prefetchable) [size=1M]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>

ciao,

der.hans

Mike

moin moin,

It looks like I can get 2 out of 3 as long as the two aren't HDMI and DVI
:(. With cables plugged into both ports I can't even see post. Remove one
and suddenly lights are on.

Using either HDMI or DVI with VGA works, though.

Now I just need to figure out why wheezy demands on cloning the output.

I'm hoping to find a solution that doesn't require installing the
proprietary driver :).

ciao,

der.hans

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