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Re: The Pg.i830 driver and 0x27a6 device id
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06/28/2011 5:10 AM
post86895
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Re: The Pg.i830 driver and 0x27a6 device id
Hi Werner,
I think that this is hardware-specific issue. I can't reproduce it without
the hardware, so I can't resolve this issue.
Try to use Hydra.ms/Pg.flat* to get Photon screen on DVI-port. The Hydra.ms
uses BIOS to switch graphics modes.
You can tweak a video output by correcting appropriate line in your
/etc/config/trap/crtc-settings.<NODE> . Please compare parameters used by
Windows 7 and by QNX4.
--
Respectfully,
Oleg
> Hi Oleg,
>
> yes you are right. 27a6 is the second head in the 945GM Express GMCH
> chipset. On this Kontron board the output of the first head (27a2)
> goes to a VGA connector, the output of the second head (27a6) goes to
> a DVI connector.
>
> I tried it once more. One screen, only at the DVI port. I see
> BIOS-Messages and QNX text on the DVI port. When I start Photon, the
> screen goes black.
>
> First I thought that I need a Kontron specific driver to do some
> special kind of initialization for the electronics that comes after
> the chipset. But the windows 7 installation worked right away without
> a special driver.
>
> The bad thing is, that the signal comming out of the VGA-Port is not
> very fine at 1600x1200. So getting the DVI port work would be great
>
> Best regards,
> Werner
>
> > Hi Werner,
> >
> > As far as I know 27a6 is a device ID for second head of graphics
> > controller. But both heads can work with CRT or DVI port.
> > Unfortunately, the Photon 1.14 can't display two different screens
> > on dual-head graphics controllers. If you want to connect two
> > displays then you have to use two different graphics cards.
> >
> > To get image on DVI you should connect it to a monitor and then boot
> > the QNX4 and launch the Photon.
> >
> > > Hi Oleg, Hi Jacek,
> > >
> > > I have here a CPCI CPU Type Contron CP307 with 945GM Express GMCH
> > > chipset. Device ID for graphic: 27a2 and 27a6.
> > >
> > > 27a2 is recognized and I can use is up to 1600x1200.
> > >
> > > But 27a2 is for the VGA port of the board and 27a6 for the DVI
> > > port. And I like to use DVI - or maybe even two monitors.
> > >
> > > 27a6 did not show up in crt.1 after crttrap.
> > > I did as you suggested. I added a conformed line to the
> > > crttrap.list. 27a6 is now listed in crt.1 after crttrap. But wenn
> > > I try to use it, it doesn't work. The DVI port stays black, the
> > > VGA port is flickering in a single color.
> > >
> > > I did a test installation with windows 7. Both port were recognized
> > > and able for even higher resolutions.
> > >
> > > Do you think support for 27a6 can be added ?
> > >
> > > Best regards, Werner
> > >
> > >
> > >
> > >
> > > _______________________________________________
> > >
> > > General
> > > http://community.qnx.com/sf/go/post86752
>
> _______________________________________________
>
> General
> http://community.qnx.com/sf/go/post86886
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