4.4.99.903: s3: missing some of the screen

Hi!

Starting XFree86 4.4.99.903 using the s3 driver at mode 1024x768 8bpp I 
see the following screen:

       0     303                   1023
       |      |                      |
  0 ---BBBBBBBB----------------------+
       BBBBBBBB                      |
       BBBBBBBB                      |
       BBBBBBBB       GOOD AREA      |
       BBBBBBBB                      |
       BBBBBBBB                      |
  767--BBBBBBBB----------------------+


where B means that black pixels are displayed always.

I don't know what is the problem exactly but the attached patch removes 
this bug. (May cause new ones, too...)

	NMarci


P.S.: My hardware is:

chip:
-----
S3 Trio64V+
    P1E3BF
86C765
9650 MB851
TAIWAN

VGA BIOS:
---------
Phoenix S3 TRIO64V+ Enhanced VGA BIOS. Version 1.02-02
Copyright 1987-1992 Phoenix Technologies Ltd.
Copyright 1992-1995 S3 Incorporated.
All Rights Reserved

lspci -v:
---------
0000:00:09.0 VGA compatible controller: S3 Inc. 86c764/765 
[Trio32/64/64V+] (rev 54) (prog-if 00 [VGA])
         Flags: medium devsel, IRQ 10
         Memory at e0000000 (32-bit, non-prefetchable) [size=64M]

--- xc/programs/Xserver/hw/xfree86/drivers/s3.orig/s3_driver.c	2005-03-11 09:41:49.000000000 +0100
+++ xc/programs/Xserver/hw/xfree86/drivers/s3/s3_driver.c	2005-03-11 10:51:44.000000000 +0100
@@ -1120,9 +1120,6 @@
 	if (!vgaHWInit(pScrn, mode))
 		return FALSE;
 
-	/* We have horizontal blank end extension bits, so undo KGA workaround */
-	vgaHWHBlankKGA(mode, pVga, 0, 0);
-
 	pVga->MiscOutReg |= 0x0c;
 	pVga->Sequencer[0] = 0x03;
 	pVga->CRTC[19] = pS3->s3BppDisplayWidth >> 3;