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- Path: sparky!uunet!usc!zaphod.mps.ohio-state.edu!caen!uflorida!travis.csd.harris.com!grouper!grouper!rrusk
- From: rrusk@ssd.csd.harris.com (Bob Rusk)
- Newsgroups: comp.os.linux
- Subject: Interlacing X11
- Message-ID: <RRUSK.92Dec23101100@rcx1.ssd.csd.harris.com>
- Date: 23 Dec 92 15:11:00 GMT
- Sender: news@grouper.mkt.csd.harris.com (Network News)
- Reply-To: rrusk@ssd.csd.harris.com
- Organization: Harris Computer Systems Division
- Lines: 39
-
- I'm running the SLS 0.98.1 distribution on a 386DX/20 with a 387, 8MB
- RAM, and an ATI VGA1024 (OEM VGA Wonder) with 512K RAM feeding an old
- Thomson UltraScan multi-scanning monitor. My mouse is a Logitech
- 3-button serial mouse. Everything works great (Thanks Linus et al!
- I've been up since 0.11.) except that I haven't been able to get a
- good display in X when I go beyond 640x480.
-
- I recently ran timings.exe (from sunsite) under DOS to find out about
- the 800x600x256 video mode that MS-Windows uses. It output the
- following:
-
- 800 824 968 1016 300 301 315 312 Interlace
-
- When I use this line (with clocks of 36 or 39) in my Xconfig, I get a
- display that fills the screen, but the mouse will only move over half
- of it and the printing is tiny and distorted. What must I do to get X
- to use an interlaced mode?
-
- I've gotten a couple of tolerably-bad 744x552 modes, but they flicker
- pretty badly and are stretching the capabilities of my monitor by a
- lot. (Monitor rated at 35MHz horizontal and 75 MHz vertical.) I used
- the 800x600 interlaced mode a lot under MS-DOG (mode 0x63), and it is
- more stable and gives considerably less flicker than my 744x552 mode
- with the 39MHz clock.
-
- On a related note, does anybody have a valid clocks line for a VGA
- Wonder? My VGA board uses programmable clocks, and X can't figure
- them out for itself. The first four that I use are "25 28 36 39"
- (there might be a 31 between the 28 and the 36 -- I can't remember),
- but the rest of the clocks on the line I've cobbled up are necessary
- but don't work. That is, if I remove them, nothing works, but if I
- use them, I get garbage.
-
- Any and all help will be much appreciated.
-
- --
- Bob Rusk
- rrusk@ssd.csd.harris.com
- My thoughts, probably not Harris'.
-