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baslinux - [BL] no XVESA or svgalib - DOS/linux video problem

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  • From: sindi keesan <keesan AT sdf.lonestar.org>
  • To: baslinux AT lists.ibiblio.org
  • Subject: [BL] no XVESA or svgalib - DOS/linux video problem
  • Date: Sat, 9 Jul 2005 15:41:39 +0000 (UTC)

I have an S3 Trio3D AGP video card (4MB RAM, VESA 2.0) which worked fine in another computer. This computer has PCI ethernet and scsi cards, ISA modem and ISA/pnp sound (Awe64) and a jumpered ISA I/O card to replace the bad floppy controller and bad primary IDE controller (the master part was okay, the slave intermittent). It is 533MHz and sometimes freezes up when I try to go into CMOS setup. It took a lot of juggling of IRQs with ctcu/ctcm, and BIOS setup, to get sound to work in linux (at which point I cannot play .wav files in DOS - which requires IRQ9 to play wav, but plays midis okay with irq5).

When I run the following DOS programs they display not in the usual color but in grey and white:
syschk
SB16's diagnose or ctcu
vuimg image viewer

Compushow gives a runtime error 200

lxpic displays properly in color.
So do 'display', pictview (both freeware), qv (quicktime viewer) and sea3, and after using any of these four programs, the other programs that were displaying grey also display properly in color.

In linux, I was getting 'illegal' messages when I tried to use any svgalib program (zgv, links2 from delilinux) or Xvesa until I fixed this problem in DOS.

To fix it in DOS, I put a line at the end of autoexec.bat
pictview image.jpg

When I boot, I hit the ESC key to get back to a prompt instead of an image.


The grey problem occurred before I put in the I/O card. In CMOS I set IRQ14 and 3 to ISA not pnp. BIOS lists only the sound card as pnp. It finds the modem at IRQ9 but ctcm later changes this. IRQ9 is used in conjunction with IRQ2 somehow as 'cascade' and is not available in linux.

Is there some better way to fix this problem? Maybe even one that does not require DOS, or is it DOS that is causing the problem? (I should try booting with 2-floppy BL3 to check this).

So this is a completely different type of XVESA problem that also affects svgalib.



keesan AT sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org




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