Exiting Sunview - long
2007-12-25 7:33:00
Hi People,
Thanks to all who replied.
The original questions was :
>>"Is there a solution for the forgotten cursor after
>> exiting sunview and openwindows in color sparcs ?"
The first thing is that is a bug in the GX software.
In "Read This First" you'll find a short program listed that
fixes this program. Thanks to
"John R. Kilheffer" <amp19263%garfield.amp.com@RELAY.CS.NET> and
kevinmac@ll.mit.edu (Kevin McElearney)
this program is typed in the end of this message.
There is another short program that also fixes the problem. Thanks to
"Mark J. McIntosh" <mmcintos@sirius.UVic.CA> this also is typed.
Both programs worked fine.
List of Honor:
dan@breeze.bellcore.com (Daniel Strick)
igor!ddull@uunet.UU.NET (David Dull)
stevo@elroy.Jpl.Nasa.Gov (Steve Groom)
mikulska@ece.UCSD.EDU (Margaret Mikulska)
dasun!myers@sunkist.West.Sun.COM (Allen Myers (Myers) x6684)
lamour@maestro.mitre.org (Michael Lamoureux)
"Mark J. McIntosh" <mmcintos@sirius.UVic.CA>
"John R. Kilheffer" <amp19263%garfield.amp.com@RELAY.CS.NET>
kevinmac@ll.mit.edu (Kevin McElearney)
Diogenes C. Silva Jr.
Computer Science Dept.
Federal University of Minas Gerais - Brasil
>>>> The "Read this First" Program. by SUN.
/*
* gxcursor -- disable GX cursor. Workaround to remove GX hardware cursor
* from screen after exiting OpenWindows. Taken from page 11
* of "READ THIS FIRST: OpenWindows Version 2"
*
* to compile: cc -O -o gxcursor gxcursor.c -lpixrect
*
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sun/fbio.h>
#include <pixrect/pixrect.h>
#include <pixrect/memvar.h>
struct cg6pr {
struct mprp_data mprp; /* memory pixrect simulator */
int fd; /* device file descriptor */
struct pr_size cg6size; /* screen size */
caddr_t cg6_fbc; /* FBC base */
caddr_t cg6_tec; /* TEC base */
}
#define THCOFFSET (5 * 4096)
#define THC_CURSOR 0x8FC
main(argc,argv)
int argc;
char *argv[];
{
char *dev = argc > 1 ? argv[1] : "/dev/fb";
int fd;
struct fbgattr fbattr;
Pixrect *pr;
if ((fd = open(dev, 2, 0)) < 0) {
perror(dev);
exit(1);
}
if (ioctl(fd, FBIOGATTR, &fbattr) < 0 ||
fbattr.fbtype.fb_type != FBTYPE_SUNFAST_COLOR) {
fprintf(stderr, "device %s is not a GX frame buffer\n", dev);
exit(1);
}
(void) close(fd);
if ((pr = pr_open(dev)) == 0) {
fprintf(stderr, "pixrect open failed for %s\n", dev);
exit(1);
}
* (int *) (((struct cg6pr *) pr->pr_data)->cg6_fbc +
THCOFFSET + THC_CURSOR) = 0xffe0ffe0;
exit(0);
}
============
>>>>>The shorter program.
============
/*
* Mark McIntosh <mmcintos@sirius.UVic.CA> (604)721-6049
* University of Victoria, Faculty of Engineering
* Box 3055, Victoria BC V8W 3P6
* CANADA
*
* HISTORY
* 90Dec12 Mark McIntosh Pulled off net - see comments below
* 91Jun21 Mark McIntosh Check return value of open on /dev/fb
*
*/
/*
* Comments from original news posting in comp.sys.sun for this program:
*
* We've just started upgrading to 4.1.1, and most things seem to work great.
* However, the SunView mouse pointer (the arrow) doesn't go away when we
* exit SunView. It stays on the screen until we enter SunView again. This
* isn't too bad on the console, but it's very annoying when we start up MIT
* X Windows (X11R4). We haven't tried OpenWindows 2.0 yet.
*
* I've experienced the same problem both with SunView and OpenWindows 2.0
* immediately after installing the GFX patch from sun. It appears that both
* of these programs take "advantage" of the hardware cursor support
* avaliable with the GX board, but fail to turn the cursor off when they
* exit. The following bit of code will turn the cursor off.
*
* Alfred A. Rizzi al@corwin.eng.yale.edu ph: (203) 432-4239
* Yale Robotics Laboratory fx: (203) 432-7481
* Department of Electrical Engineering, 1968 Yale Station, New Haven, CT 06520
*
*/
#include <stdio.h>
#include <fcntl.h>
#include <sys/ioccom.h>
#include <sun/fbio.h>
main()
{
int fd;
struct fbcursor curs ;
curs.set = FB_CUR_SETCUR;
curs.enable = 0;
if ( (fd = open("/dev/fb", O_RDWR)) < 0 ) {
fprintf(stderr, "Can't open /dev/fb\n");
exit(0);
}
ioctl(fd, FBIOSCURSOR, &curs);
close(fd);
}
========
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