[ale] Dual video on HP pavillion running Centos
Neal Rhodes
neal at mnopltd.com
Sun Jul 21 22:58:18 EDT 2013
Thanks for reply. Note, there is no NEW chip. There is just the chip
on which I am now writing your response at 1920xwhatever.
That chip also feeds a DVI port under a plastic "do not remove" cover.
Part of what I was asking - on Win7 and Ubuntu systems, you just plug in
a monitor, or turn it on, and they instantly react to it being there -
no need to restart.
lspci says:
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09) (prog-if 00
[VGA
controller])
Subsystem: Hewlett-Packard Company Device
2ac2
Flags: bus master, fast devsel, latency 0, IRQ
29
Memory at fe000000 (64-bit, non-prefetchable)
[size=4M]
Memory at c0000000 (64-bit, prefetchable)
[size=256M]
I/O ports at f000
[size=64]
Expansion ROM at <unassigned>
[disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable-
64bit-
Capabilities: [d0] Power Management version
2
Capabilities: [a4] PCI Advanced
Features
Kernel driver in use:
i915
Kernel modules: i915
That still doesn't quite seem to pin down the actual chip being used.
Regards,
Neal
On Sun, 2013-07-21 at 21:32 -0400, Jim Kinney wrote:
> What an odd combination of hardware exclusions!
>
>
>
> If you can "see" the on board chip with lspci then the proper driver
> should be able to address it. Do swome digging with data from lspci
> and see if the Intel chip can support dual output.
>
>
>
> You might have to restart X to get it to "see" the new chip once and
> detect dual monitor capability.
>
>
>
>
> On Sun, Jul 21, 2013 at 5:49 PM, Neal Rhodes <neal at mnopltd.com> wrote:
>
> So, we've been running Centos 6.3 on an HP Pavilion p7-1131
> Desktop PC
> for about 1.5 years now. And loving it.
>
> We now lust after running two 24" monitors for work. No
> games, just two
> decent monitors at 1920x1080.
>
> The unit was delivered with an additional card: an HP
> 634478-001, which
> is an HP flavor of AMD Radeon, which has DVI and HDMI only.
> (no VGA;
> weird.) If this card is present, then I've experienced that
> it takes
> precedence, the onboard VGA goes dormant, and there ain't no
> BIOS setup
> options which pertain to making both of them play nice with
> each other.
>
> And the really interesting thing is that the system board has
> a DVI
> connector, which is mounted onto a header and goes through a
> port in the
> back. And on the DVI port on the back is a black plastic
> cover screwed
> on which says "DO NOT REMOVE". (reminds me of a 78
> Alfa-Romeo sedan
> which had a sticker on the rear seats: "rear seats not to be
> occupied
> when vehicle is in motion".)
>
>
>
> Based on HP's website, the specs on the unit say:
>
> Intel Graphics Media Accelerator HD Integrated graphics
> (DX10.1)
> *Integrated video is not available if a graphics card is
> installed.
> Supports PCI Express x16 graphics cards
> DVI and VGA ports (both ports can be used at the same
> time)
>
>
> Curious-er and Curious-er. This thing was shipped with Win7.
>
> Various HP articles indicate they stick those plastic covers
> on when the
> additional video card would have caused the onboard video
> ports to be
> disabled. I don't see any way this thing would have driven
> the VGA as
> delivered.
>
> My inclinations are to try using the onboard DVI port, since I
> took the
> Radeon card out. I'm trying to figure out how to figure out
> if the
> Intel video chip would fail to drive the two ports at full
> resolution if
> it could do one.
>
> Any reason to not try? Is my dipstick gonna fall off?
>
> I'd have to get a DVI-to-VGA cable to hook up the 2nd
> monitor. Can I
> just hook it up and run the Display Preferences utility and
> tell it to
> Detect Monitors? Or do I have to reboot? Reason being that
> I'm
> switching these two monitors back and forth with client
> notebooks.
>
> Neal Rhodes
> MNOP Ltd
>
>
>
>
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>
> --
> --
> James P. Kinney III
>
> Every time you stop a school, you will have to build a jail. What you
> gain at one end you lose at the other. It's like feeding a dog on his
> own tail. It won't fatten the dog.
> - Speech 11/23/1900 Mark Twain
>
> http://electjimkinney.org
> http://heretothereideas.blogspot.com/
>
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