Separate X Screens - possible on Intel Integrated HD Graphics?

[Pekka Paalanen]

On Fri, 15 Jan 2016 09:35:48 -0500
Ken Taylor <di604admin at embarqmail.com> wrote:

> Good morning and pardon me if this is a dead end question.  I have seen 
> some references to it in the archives including a couple of responses 
> from Intel folks saying NO.  The most recent was dated 2011 so I am 
> hoping the answer may have changed.
> 
> I have a couple of Dell Inspiron 3050 PCs with "Intel HD Graphics". The 
> machines have two video outputs (Displayport and HDMI) and WILL drive 
> two monitors.  However, I have not been able to establish separate X 
> screens. Here is a little more detailed information about the hardware:
> 
> from lspci:
> 
> 00:02.0 VGA compatible controller: Intel Corporation Atom Processor 
> Z36xxx/Z37xxx Series Graphics & Display (rev 0e) (prog-if 00 [VGA 
> controller])
>          Subsystem: Dell Device 0703
>          Flags: bus master, fast devsel, latency 0, IRQ 91
>          Memory at d0000000 (32-bit, non-prefetchable) [size=4M]
>          Memory at c0000000 (32-bit, prefetchable) [size=256M]
>          I/O ports at f080 [size=8]
>          Expansion ROM at <unassigned> [disabled]
>          Capabilities: <access denied>
>          Kernel driver in use: i915
> 
> Operating systems include CentOS 7, Ubuntu Mate 15.10 and Linux Mint 
> Mate 17.3 although I do not think that is a limitation.
> 
> Can someone offer a definitive NO which will put me out of my misery - I 
> will fill one of the video sockets with epoxy and never connect two 
> monitors :-) Or a "yes it is possible" in which case I will continue 
> banging my head against the problem.

Hi,

this might be a bit off-topic for this list, but the feature you are
looking for is called Zaphod. In fact, 'man intel' lists option
"ZaphodHeads" for the DDX, so I assume it's implemented.

Unfortunately I don't have a link to any configuration example at hand,
but in theory you'd configure just like two separate cards in
xorg.conf, except both use the same driver and device and the
difference is what you put in the ZaphodHeads option.


Thanks,
pq
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