FAILED: FC4T3 on Matrox G550 + Dell 2001FP

[Daniel Roesen]

On Mon, Jun 06, 2005 at 04:23:12PM -0500, Jerone Young wrote:
> Yeah here is a sinpet from "man mga"
> 
>  Support for the second head on G400
>        cards requires a binary-only "mga_hal" module that is  available  from
>        Matrox <http://www.matrox.com>, and may be on the CD supplied with the
>        card.  That module also provides various other enhancements,  and  may
>        be  necessary  to  use the DVI (digital) output on the G550 (and other
>        cards).

Did also try with Matrox' drivers v4.1 without any success.

I think it's now beating a dead horse. Yesterday I've ordered a GeForce
6800 Ultra based card and a new power supply to feed it. From what I'm
hearing their drivers actually work and support all the features of
the cards, and have working DRI & OpenGL even in dual-head mode.

BTW, one of the problems seem to be that Xorg somehow things that 112MHz
is the end of the game.

DDC says (relevant stuff only):
(II) MGA(0): Digital Display Input
(II) MGA(0): Supported Future Video Modes:
(II) MGA(0): #0: hsize: 1280  vsize 1024  refresh: 60  vid: 32897
(II) MGA(0): #1: hsize: 1600  vsize 1200  refresh: 60  vid: 16553
(II) MGA(0): #2: hsize: 1152  vsize 864  refresh: 75  vid: 20337
(II) MGA(0): Supported additional Video Mode:
(II) MGA(0): clock: 162.0 MHz   Image Size:  367 x 275 mm
(II) MGA(0): h_active: 1600  h_sync: 1664  h_sync_end 1856 h_blank_end
2160 h_border: 0
(II) MGA(0): v_active: 1200  v_sync: 1201  v_sync_end 1204 v_blanking:
1250 v_border: 0
(II) MGA(0): Monitor name: DELL 2001FP
(II) MGA(0): Ranges: V min: 56  V max: 76 Hz, H min: 31  H max: 80 kHz,
PixClock max 160 MHz
(II) MGA(0): end of VBE DDC Monitor info

after the DDC info, it says:
(==) MGA(0): Min pixel clock is 12 MHz
(==) MGA(0): Max pixel clock is 112 MHz
(II) MGA(0): Monitor0: Using hsync range of 31.00-80.00 kHz
(II) MGA(0): Monitor0: Using vrefresh range of 56.00-76.00 Hz
(II) MGA(0): Clock range:  12.00 to 112.00 MHz

without any context. I guess this is actually what the MGA driver
thinks that the G550 can do. IIRC, in analog mode, it allows up to
350MHz (which is the RAMDAC's max output pixel clock). So for whatever
reason it doesn't allow the full DVI 165MHz, but only a mere 112MHz.

After replacing the xorg RPMs with their FC3 versions, analog works.
But I want/need DVI, as DPMS doesn't work with analog mode, only with
DVI mode.


Best regards,
Daniel

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