Re: [XFree86] mga 1600x1200 DVI [scanned]

2003-03-21 Thread Thomas Winischhofer
Dr Andrew C Aitchison wrote: On Thu, 20 Mar 2003, Thomas Winischhofer wrote: The *analog* signal (speak: DVI-A) is (partly) transferred on the extra pins, outside of this 8x3 block. There are (up to) four pins in a square, with a ~2mm wide "key" pin in the middle. If these pins around the key pi

Re: [XFree86] mga 1600x1200 DVI [scanned]

2003-03-21 Thread Dr Andrew C Aitchison
On Thu, 20 Mar 2003, Thomas Winischhofer wrote: > Dr Andrew C Aitchison wrote: > > Thanks for clarifying. On my other G550 I have a 1600x1024 monitor on what > > appears to be a single-link cable. If I switch from DVI-digital to > > DVI-analog *on the monitor* the picture goes away, so I was get

Re: [XFree86] mga 1600x1200 DVI [scanned]

2003-03-20 Thread Thomas Winischhofer
Dr Andrew C Aitchison wrote: Thanks for clarifying. On my other G550 I have a 1600x1024 monitor on what appears to be a single-link cable. If I switch from DVI-digital to DVI-analog *on the monitor* the picture goes away, so I was getting very confused. This is [EMAIL PROTECTED] with a 108MHz clo

Re: [XFree86] mga 1600x1200 DVI [scanned]

2003-03-20 Thread Dr Andrew C Aitchison
On Thu, 20 Mar 2003, Thomas Winischhofer wrote: > Ken Marx wrote: > > Right. Veit also pointed out this limitation. Perhaps it's > > *doable*, but just isn't supported? [EMAIL PROTECTED] > > claims to have it working under linux; I know I have 1600x1200 > > working on 4.2.1 (Freebsd-4.7) for b

Re: [XFree86] mga 1600x1200 DVI [scanned]

2003-03-20 Thread Thomas Winischhofer
Ken Marx wrote: > Right. Veit also pointed out this limitation. Perhaps it's > *doable*, but just isn't supported? [EMAIL PROTECTED] > claims to have it working under linux; I know I have 1600x1200 > working on 4.2.1 (Freebsd-4.7) for both the G400/550 on a > the viewsonic vp230mb (at 56hz v-refres

Re: [XFree86] mga 1600x1200 DVI [scanned]

2003-03-19 Thread Dr Andrew C Aitchison
On Wed, 19 Mar 2003, Ken Marx wrote: > p.s. Re: Veit's question about 60hz vs 56hz: I'm sure. > I went and double checked: at 60Hz I get a blank screen > for 1600x1200 and see this in the log: > > (WW) (1600x1200,ViewSonic LCD-23) mode clock 162MHz exceeds DDC maximum 160MHz > > This even with

Re: [XFree86] mga 1600x1200 DVI [scanned]

2003-03-19 Thread Ken Marx
Right. Veit also pointed out this limitation. Perhaps it's *doable*, but just isn't supported? [EMAIL PROTECTED] claims to have it working under linux; I know I have 1600x1200 working on 4.2.1 (Freebsd-4.7) for both the G400/550 on a the viewsonic vp230mb (at 56hz v-refresh). The monitor reports it

Re: [XFree86] mga 1600x1200 DVI [scanned]

2003-03-19 Thread Thomas Winischhofer
According to the Matrox website (http://www.matrox.com/mga/products/tech_info/g550_factsheet.cfm) the G550 can only do up to 1280x1024 via *digital* DVI, 1600x1200 via *analog* DVI. (1280x1024 is the limit for all "single-link" cards/output devices. Resolutions above this require a "dual link"

Re: [XFree86] mga 1600x1200 DVI [scanned]

2003-03-19 Thread Veit Wahlich
Hi Ken! Am Die, 2003-03-18 um 00.08 schrieb Ken Marx: > (Just fyi - I got both a g550, and a g400 to work > at 1600x1200 in DVI on a viewSonic vp230mb. > I had to clock the refresh rate down to 56hz > from 60hz. Ignorance was bliss there, I guess.) I am sure I tried this - my ViewSonic VX2000 d

Re: [XFree86] mga 1600x1200 DVI [scanned]

2003-03-17 Thread Ken Marx
Brilliant! That saves me some time. Thanks very much. (Just fyi - I got both a g550, and a g400 to work at 1600x1200 in DVI on a viewSonic vp230mb. I had to clock the refresh rate down to 56hz from 60hz. Ignorance was bliss there, I guess.) Before I go and try the Ti4200, I might as well ask if

Re: [XFree86] mga 1600x1200 DVI [scanned]

2003-03-17 Thread Mark Vojkovich
Yes, people need to be aware that having a DVI connector alone isn't enough to ensure that you can run a particular panel. While many cards boast high analog pixel clocks, TMDS clocks are quite a different matter. High bandwidth TMDS controllers are complicated to make and are typically not a

Re: [XFree86] mga 1600x1200 DVI [scanned]

2003-03-17 Thread Veit Wahlich
Hi! I ran into the same trap - but sometimes it worked but was very "snowy". I was shocked when I read that G550 simply does not support DVI-D at this resolution: DVI output * Supports cutting-edge digital flat panels with resolutions up to 1280 x 1024 (main display) (http://www.matrox.com/