Like the subject line says, is there any way to get this done now?

I've been using my ATI 9250 (I think) card to push 1920x1200x24 @60Hz to my 24" wide screen monitor via DVI-D, and like that a lot. But how about pushing 2560x1600 to a 30" screen (requires dual DVI, it seems - fair enough, I guess), is that possible under MOS currently, i.e. is there any driver for a card that can do this? Or should I keep the money in the pocket for now and dream on?

well, I made on my old 260 MHz 19" CRT a resolution of 2400x1600x24 interlaced (can't remember the frequency), and it worked fine. MorphOS haven't such a limitations, You can setup everything You wish, if hardware accepts it...

bye, MarK.

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Well, not quite, MorphOS currently has a limitation of 8192 or so due to AOS/CGX legacy (additionally there's an issue with setting certain screensizes in 1.4.x IIRC). ;)


- CISC

i guess, we have some time to take this as a limitation. there ofcourse are some limitations, but nothing unacceptable...

bye, MarK.

Definitely not unacceptable, like I said I'm quite happy with the 1920x1200 screen on DVI-D, it's a roomy sektop, stable and sharp as a scalpel - just looking ahead for the next step.

To formulate the question a bit more sharpish: Are there any graphics cards that can give me 2560x1600x24 @ 60 and have MOS drivers supprting them? I thought the answer was 'no', but maybe I been too busy doing other things and may have missed out on it.

Thanks anywayzzzz.

[ Edited by wlamee on 2008/3/6 23:37 ]

i have tested it right now. with my old radeon 9000pro and my old 19" monitor with 261 mhz bandwidth, i -CAN- display 2560x1582x24bitx50hz, but it's the limitation of the monitor, not the gfx board. see the picture.

need another proof?

bye, MarK.

Can you please tell me what specific card you are using? MorphOS can not push my R7500 to 1920x1200 although other OSs can. It stops at 1600x1200 or I am too dumb for the unnecessary too complicated display settings. My R9250 is not recognized by OF. My R9600 and R9650 will stay unsupported by MorphOS AFAIR. I do not want to buy another R9250 that MorphOS cannot run again so please give me a hint which specific model can make use of my monitor.

Quote:

They are complicated for a reason, and I'm guessing the reason you can't push it above 1600x1200 is that you have not configured the monitor settings appropriately (this is where you can (or atleast could in the old days when monitors had no safeguards) cause serious damage to your monitor if you are not careful); most likely the bandwidth/pixelclock, try to find some docs on your monitor (or check out the .inf file that comes with windrivers) that tell you what your monitor can do...


- CISC

CISC is right, of course, if you set the pixelclock and/or bandwidth correctly for your monitor and both the GFX card and the monitor can handle 1920x1200, things will work. BTW, I've got a Radeon 9200 SE 128MB card. I think I set up the min and max Hz and kHz for horizontal and vertical refresh, and if that allows 1920x1200, there you go. Good luck, and let us know where you end up.

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This is my assumption but I tried several times, sveral hours and
could not get it to work. Those monitor settings are where CRT and TFT
diverge.

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I know what my monitor is able to display. You can see the specs
online at
http://support.dell.com/support/edocs/monitors/2405fpw/en/about.htm#Specifioications
But those didn't help me yet to adopt those circuitous settings to the
needs of my display.

Quote:
which exactly is the whole problem as MorphOS' monitor settings are
good for squeezing the last pixel out of an ancient CRTs but bad for
using modern TFTs. If it was that easy ("set both the same and of
course everything will work") then there wouldn't be a single point to
ask.

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OK, so you don't have a 9250 then. If I already implement a new card
then I just want a 9250 and a working one, not as the one that I
already own. Therefore I need explicit model names that definitely
work. "Buy any 92x0 and it will work" is untrue as we can see.

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This is for sure the first thing to do if one wants to get a monitor
to work with MorphOS. If it had worked I would have nothing to ask.
But this bounds me to 1600x1200 as MorphOS is way behind the rest
of the world here. As I could not find any tutorial that puts
sync/pulse lengths and offsets in relation to TFT entities it stopped
at digging in the dirt.

another important number is the pixel clock. enter the maximum monitor supported value. and send here a screenshot of the monitor settings...

bye, MarK.

@ Sprocki

MarK is right.

One of the most important parameters is pixel clock. The first thing you need is to rise it up to the minimum value needed.

Looking at the specifications it is clear that your monitor accepts a pixel clock at least up to 162.0 MHz (which ensures you can get a 1920x1600 resolution). However you may be not able to reach such a value if, previously, you have not set correctly a sufficiently large bandwidth in the monitor specification window.

Since the specifications do not say what is the bandwidth of your monitor, you can set it, as a first approximation, to a value somewhat larger than the pixel clock. Then, stay at 1600x1200 resolution, and try to rise the pixel clock up to 162.0 MHz. If you are still not able to reach this value, go back to the monitor specification window and rise up the bandwith. And so on until you will be able to reach the correct pixel clock.

Now, setting the resolution to 1920x1600 should be no longer a problem.

Good luck.

(Please note that anything you do is totally at your own risk. Modern devices have internal protections against improper settings, but I do not accept any responsability for possible damages!)

[ Edited by DoctorMorbius_FP on 2008/3/14 20:44 ]

Well hey, whadda ya know? A Dell 2405FPW ...

"Why didn't you say so before?" I'm running my 1920x1200 on a Dell 2407WFP - nothing like a CRT there, a TFT very similar to yours.

I've got my monitor file Prefs/Presets/Monitors/Dell 2407WFP (which I think contains hfreq, vfreq, hsync & vsync as well as the screen modes), find it at Dell 2407WFP.

The usual disclaimers for this file of course regarding explosions, psychotic behaviour & treatment, axe damage and so on, but if your TFT does 1920x1200x24 @ 60Hz, you might want to check if this doesn't exceed your monitor's specs and adjust them as needed, but I'm guessing this is all you need. Let me know if this works for you.

Oh, and a bit of food for thought: This monitor file started out as an Iiyama MT-8221E monitor file, for a 21" CRT.

I use a 9200 card, and a Dell 21" wide LCD with mine. This is my 3rd or 4th monitor with my Peg now, and the one setting when I get a new monitor i could never find the information for is the "bandwidth" setting. I have no idea what it is, its never in any of the newer spec sheets I find for my monitors, and every time i mail the manufacturer they have no idea what I am talking about. Just what IS this stetting and how do you calculate it/find it?

if You use the maximum LCD's resolution and frequency, and everything is sharp, then it's probably setup correctly... but you can try. new monitors will tell you, that you are out of bounds, if you enter too high or too low values... simply enter higher maximum bandwidth/pixelclock, and use slider to increase it's value, when the picture will disappear, you got probably out of bounds... this way you can find all the values for Hz, kHz, MHz...

bye, MarK.

The obvious settings (bandwidth, resolution, horizontal/vertical refresh rates) are beyond question. For sure I took those settings out of the table I showed you and put them into MOS' settings. They didn't work. The hard (impossible?) thing is to set those CRT parameters in a manner that the TFT gets its right values. As I said, I know of no correlation between min time/min pulse, sync length, pulse offset and so on on the one hand side and its mapping to TFT settings on the other, and this is what causes the problems to get MOS working properly with my display. If you have any URL that explains how to conclude from pulse offset and the like to reasonable settings for a TFT, please give me a hint. Setting every slider up and down one tick to check if this one works better than the one before has been done by me in a feasible way but it is not practicable with every of all those thousands possibilities.

@wlamee:

Thanks for your settings file but it results in the same appearance as with mine. 1920x1200 are tightened to 1600x1200 although the more space is visible on the displayed screen. It keeps having 10% black bars on the left and right and all the texts and graphics are not very readable. When I slightly go down with the resolution I can display 1920x1080 in another non-usuable way. I can choose between the wrong display of 1920x1200 where the OSD tells me that it uses the native resolution of 1600x1200 or I can set it up to 1920x1080 where the whole screen is stretched to the right and the last 10% disappear beyond the border of the monitor. As there is no way to re-stretch or move it to the left as with an old CRT, both are not usuable.

I shot some fotos to see what's happening. On http://www.sprocki.net/img_0071.jpg you see 1920x1200 resolution tightened to 1600x1200. On http://www.sprocki.net/img_0074.jpg you see the maximum resolution of 1920x1164 in widescreen mode. With raising the vertical number of pixels it switches to 1600x1200 centered. As you can also see the right edge is cut. This screenmode is displayed as 1920x1080 as the OSD tells. On http://www.sprocki.net/img_0077.jpg you again see 1920x1200 tightened to 1600x1200 centered. The panel at the bottom fits to 1600x1200, so you see the space gain but not in the width but by compressing the picture. On http://www.sprocki.net/img_0085.jpg you see widescreen but overstretched. This is 1920x1080 as OSD says but stretched and cut on the right. The window on the right is placed beneatch the border (Ctrl-LMB), so you see how much gets cut. You also see the black bars on top and bottom for not displaying 1200 horizontal lines correctly but just 1080.

So may someone push me forward a little bit? Does anybody have some more ideas?

what are specs of your monitor? perhaps an exact link?

bye, MarK.

see above -> 2008/3/13 22:51