Re: [expert] Fixed frequency monitor
Axalon wrote: > > You might try the framebuffer drivers, but i am just guessing. No, not exactly: framebuffer drivers always work in _graphic_ mode, not in text mode. They can display text, of course, but text has to be _rendered_ by the driver so it's much slower compared to _real_ text mode where you don't have text rendering to do _in software_ (it's done by the VGA card) and also only have to transmit only 2 bytes (char + attributes) to the card over the bus. Last, real text modes can also use several screenfuls of data all mapped in the 64k memory window (A000 to AFFF if I remember) and switch _instantly_ from one screen to another. If you find time, have a look some day at SVGATextMode documentation, it's very well done and explains quite well even to the newbie. -- Jean-Louis Debert[EMAIL PROTECTED] 74 Annemasse France old Linux fan
Re: [expert] Fixed frequency monitor
You might try the framebuffer drivers, but i am just guessing. On Thu, 22 Jul 1999, Jean-Louis Debert wrote: > "Jay Summet for [EMAIL PROTECTED]" wrote: > > The card I had came with (ms-Dos) software to change the settings for the > > text display modes as well (basically, a modeline for text mode) and I was > > able to get text mode working in Dos without much trouble. However, I > > don't know of anything in Linux that will allow you to change the card > > settings for text mode. > > Yes, there is, and it's even on the Mandrake cd: it's SVGATextMode, and > it also includes a DOS binary if you are interested. > > > -- > Jean-Louis Debert[EMAIL PROTECTED] > 74 Annemasse France > old Linux fan >
Re: [expert] Fixed frequency monitor
"Jay Summet for [EMAIL PROTECTED]" wrote: > The card I had came with (ms-Dos) software to change the settings for the > text display modes as well (basically, a modeline for text mode) and I was > able to get text mode working in Dos without much trouble. However, I > don't know of anything in Linux that will allow you to change the card > settings for text mode. Yes, there is, and it's even on the Mandrake cd: it's SVGATextMode, and it also includes a DOS binary if you are interested. -- Jean-Louis Debert[EMAIL PROTECTED] 74 Annemasse France old Linux fan
Re: [expert] Fixed frequency monitor
On Wed, 21 Jul 1999, Marco Fioretti wrote: > 1) HARDWARE: I know I can blow the monitor doing this, > but what about the video card and other PC > parts? Is there any possibility that I > permanently damage anything INTO the PC case > while playing with this? Yes. It is possible to blow the video card. Nothing TOO spectacular, shouldn't hurt other components, but the video card will stop working. I've done this myself on a DOS system using a Sun Monitor. I expect that the OS diffrence (DOS/Linux) won't matter. However, it's not easy, I fiddled with it for a long time before doing this. > 4) TEXT MODE: I'm almost sure this is not possible, but let's > ask: Is there any way to have mandrake also run > without X windows, text mode only, on such a > combination of video card and monitor > (maybe like having the 640x480 mode or whatever it is > appear only on one fraction of the screen?) The card I had came with (ms-Dos) software to change the settings for the text display modes as well (basically, a modeline for text mode) and I was able to get text mode working in Dos without much trouble. However, I don't know of anything in Linux that will allow you to change the card settings for text mode. Jay Summet
[expert] Fixed frequency monitor
Hello, I am trying to use a SUN GDM 1962 monitor with a MATROX G200 AGP video card and, obviously Mandrake 6.0. The monitor has a 13W3 connector, but I have a 13W3 to VGA adapter from SUN, so the problems are that: (solved) Fixed frequency means only one possible modeline, which I already found on the net. (real) Sync signal are not standard, i.e. they could be any of negative/positive/sync_on_green/composite.. Online datasheets say different things about this, and printed manuals or feedback from SUN seem harder to get than 100% uptime in Windows NT :-)) (real) Fixed frequency means no text mode, which makes init level 5 mandatory (right) but also makes setup tricky. Right now I am: 1) editing XFREE86config in text mode on small VGA monitor 2) type startx --whatever_options_you_may_suggest_here 3) disconnect VGA, connect SUN monitor 4) press ENTER 5) (so far..) No image, back to square 1) What I'd like to know is: 1) HARDWARE:I know I can blow the monitor doing this, but what about the video card and other PC parts? Is there any possibility that I permanently damage anything INTO the PC case while playing with this? 2) SYNC SIGNALS: Whatever they are, it's just a matter of adding the corresponding flags (+-vsync/etc) to the modeline, or am I missing something? (like other options in Xfree86config, command- line switches to startx, board jumpers, etc..) 3) SYNC SIGNALS AGAIN: does anybody by any chance have access to a GDM 1962B manual, and tell me what they are? NOTE: The reason why I have a custom modeline but not this info is that the guy who published it also built its own adapter, combining polarities at will. If anybody is interested, I the URL is: http://cvs.anu.edu.au:80/monitorconversion/sun.html Unlike him, I have a custom adapter, but no clue as to what it does inside. 4) TEXT MODE: I'm almost sure this is not possible, but let's ask: Is there any way to have mandrake also run without X windows, text mode only, on such a combination of video card and monitor (maybe like having the 640x480 mode or whatever it is appear only on one fraction of the screen?) Thank you in advance, Marco Fioretti P.S: thank you to all folks who give very useful advice on my UDMA timeout question: I cannot test all the suggestions right now, but I'll let you know what the outcome is.
