On Thu, 3 Oct 2002, Arend wrote: >> >> Am I correct in assuming that in order to be able to use DualHead on my >> >> G400, I need to wait for Matrox to release drivers compiled on Psyche? >> > >> >Nope, you can setup Xinerama with the standard MGA driver from XFree86. >> >> True, and false. >> >> True, you can set up Xinerama with mga driver in XFree86. >> False, it does not work with Matrox G400. It only works with >> G450 and G550. >> >> You need Matrox Hallib for dualhead on G400. > > >Hi Mike, > >I've got a G450 PCI in my Valhalla box. I paid for a 450, I assume >that's what I've got. I can't rip the heatsink off to check the chip >itself. The trouble is, lspci shows this: > >02:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP (rev 85) > >In 7.3, I am running the HAL drivers. Will I still need to use them with >8.0? > > >Hmmm, here's what /proc/pci says about it, different revision number: > > Bus 2, device 0, function 0: > VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP (rev 133). > IRQ 11. > Master Capable. Latency=64. Min Gnt=16.Max Lat=32. > Prefetchable 32 bit memory at 0xe2000000 [0xe3ffffff]. > Non-prefetchable 32 bit memory at 0xe0800000 [0xe0803fff]. > Non-prefetchable 32 bit memory at 0xe0000000 [0xe07fffff].
Matrox G400 and G450 have the exact same PCI ID, which is why the G450 shows up as G400 in lspci output et al. To determine if it is a G450 you have to look at the subvendor and subdevice ID. lspci -vn -- Mike A. Harris ftp://people.redhat.com/mharris OS Systems Engineer XFree86 maintainer Red Hat Inc.
