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- Newsgroups: comp.unix.bsd
- Path: sparky!uunet!mcsun!sunic!ericom!eua.ericsson.se!euajpa
- From: euajpa@eua.ericsson.se (Johan Parin)
- Subject: X386 Video Configuration [386BSD] (HELP)
- Message-ID: <1992Sep6.202230.12158@eua.ericsson.se>
- Summary: Only flicker on screen
- Keywords: Xconfig, ET4000, Fixed Frequency
- Sender: news@eua.ericsson.se
- Nntp-Posting-Host: euas20.eua.ericsson.se
- Organization: Ellemtel Telecom Systems Labs, Stockholm, Sweden
- Date: Sun, 6 Sep 1992 20:22:30 GMT
- Lines: 35
-
- I have the following problem when trying to bring up X386; I start X
- with xinit (or X386). The banner is printed and a switch to graphics
- mode is made, *but*: Only flicker shows on screen. This is about the
- same behavior I get if I try to switch to a video mode my monitor does
- not support (i.e. 800x600). I have a fixed frequency monitor
- (Resolutions of 800x600 or above are not supported, but 640x480
- definitely is). My video board is based on ET4000 (1 MB RAM), but is
- from an unknown (Taiwanese) manufacturer. I *have* made the required
- patches to the files pccons.c and locore.s and rebuilt the kernel with
- -DXSERVER (before I did that the server never switched to graphics
- mode). This is my Xconfig:
-
-
- vga256
- Chipset "et4000"
- Clocks 25 28 40 36 0 44 0 62
-
- NoSpeedUp
-
- ViewPort 0 0
- Modes "640x480"
-
- ModeDB
- # clock horzontal timing vertical timing
- "640x480" 25 640 672 768 800 480 490 492 525
- 28 640 672 768 800 480 490 492 525
-
- Isn't this a setup that all et4000 based video boards should support?
- (The documentation for the board is very poor, so I will not be able
- to find out the supported dot clock rates)
-
- PLEASE, any advice will be appreciated!
-
- Johan Parin
-
-