[jwhat]

Hi SGIer's,

I have been doing some testing with InfiniteReality graphics ircombine and DG5-2/TVO display board.

Having first tested with LCD monitor to get 1920x1200 graphics (as per post in SOG thread: https://forums.irixnet.org/thread-382-po...l#pid21376 )

I have now got nice main monitor and wanted to add HDGVO 1080i Video Out (via VBOB with TIO board).

The problem is that when I add the HDGVO output I always loose the main monitor output.

Here is the gfxinfo report with the my custom: 1920 x 1200 and HDGVO .vfo's loaded:


>> Graphics board 0 is "KONAD" graphics.
>>         Managed (":0.0") 1920x1200
>>         Display has 2 channels
>>         4 GEs (of 4), occmask = 0x0f
>>         4MB external BEF ram, 32bit path
>>         1 RM11 board (of 1) 1/0/0/0
>>         Texture Memory: 1024MB/-/-/-
>>         Extra-Large pixel depth
>>         32K cmap
>>         TVO option detected
>>         Channel 0:
>>         Origin = (0,0)
>>         Video Output: 1920 pixels, 1200 lines, 59.94Hz (1920x1200_60-u2412m.vfo)
>>         Channel 2 (physical port 94):
>>         Origin = (0,0)
>>         Video Output: 1920 pixels, 1080 lines, 29.97Hz (HDGVO_1920x1080_5994i.vfo)


When you add HDGVO output ircombine forces you to use external sync generator, which I have set for 1080i 59.94 signal and you must select the sync format to be 5994 "bi-level sync" which results in the HDGVO generating interlaced scans across alternate TDMS ports.

See here signal information report when one of the TDMS ports on DG5-2/TVO is plugged directly into monitor DVI port:



The problem is that while I now get HDI video output from VBOB HDI output, I no longer get the main monitor output. So there is some interaction across the two output channels.

One of the things that IR was supposed to help achieve was independent output channels.... so I am a bit surprised by this.

One possibility would appear to be that while it is reporting having channel 0 at 59.94Hz , could it be that it has also halved the refresh ( reports as 29.97Hz on HDGVO channel) for the main monitor as it has done with the two TDMS ports ?

Any IR Discreet Inferno users out there who have tested this ?

Thank you.

Cheers from Oz,


jwhat/John