>Number: 152232
>Category: misc
>Synopsis: syscons VGA screensavers don't work on some computers. Here's
>a patch.
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Nov 14 11:50:08 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator: crocket
>Release: 8.1-RELEASE
>Organization:
>Environment:
FreeBSD elisa.local 8.1-RELEASE-p1 FreeBSD 8.1-RELEASE-p1 #12: Sun Nov 14
18:09:27 KST 2010 [email protected]:/usr/obj/usr/src/sys/ELISA amd64
>Description:
All VGA screensaver except logo_saver.ko couldn't be executed on my desktop due
to
module_register_init: MOD_LOAD (XXXX_saver, 0xXXXXXXXX, 0) error 19.
After inspection, I found out that each VGA screensaver probed its own
predefined set of video modes only and if the probe failed, they would generate
that error.
A quick solution to this problem is to generate a header file that manages the
video mode of all VGA screensavers.
If I managed the video mode in one place, it would be easier to change the
video mode and build screensaver modules at once.
So I made a patch.
The patch is attached to this problem report.
You should apply the patch in /usr/src/sys.
For example, Execute "diff -p1 < xxx.diff" on /usr/src/sys.
This patch can be applied to 8.1-RELEASE safely.
>How-To-Repeat:
Load any of VGA screensavers(rain, fire, dragon, etc...) using kldload.
Execute the screensaver by pressing Shift+PauseBreak.
If it didn't execute, then read /var/log/messages, and you'll see the relevant
errors.
>Fix:
Currently, screensavers don't detect video modes automatically.
I'd appreciate it if somebody makes a patch that makes screensavers detect
video modes automatically using vidcontrol or something else.
It would be nice if we could change the video mode of screensavers with
vidcontrol.
To fix this issue, first apply the attached patch in /usr/src/sys.
Change VIDEO_MODE #define macro in /usr/src/sys/dev/syscons/videomode.h to
one of 8bit video modes shown from "vidcontrol -i mode".
Screensavers, for now, assume 8bit video mode.
After changing VIDEO_MODE to any 8bit video mode, execute "make; make install
clean" in /usr/src/sys/modules/syscons.
All syscons screensavers will be installed into /boot/kernel.
You don't have to worry about the currently loaded screensaver since loaded
screensaver modules are already in RAM.
Overwriting those screensavers on disk would not affect screensavers loaded
onto RAM.
Execute "kldunload (loaded screensaver module); kldload XXX_saver(XXX is the
name of a screensaver)" as root.
To test the screensaver, press Shift + PauseBreak. You'll see the new
screensaver working.
Patch attached with submission follows:
diff -Naur dev.orig/syscons/dragon/dragon_saver.c
dev/syscons/dragon/dragon_saver.c
--- dev.orig/syscons/dragon/dragon_saver.c 2010-06-14 11:09:06.000000000
+0900
+++ dev/syscons/dragon/dragon_saver.c 2010-11-14 19:45:09.000000000 +0900
@@ -41,23 +41,23 @@
#include <dev/fb/fbreg.h>
#include <dev/fb/splashreg.h>
#include <dev/syscons/syscons.h>
+#include <dev/syscons/videomode.h>
#define SAVER_NAME "dragon_saver"
static u_char *vid;
-static int blanked;
+static int blanked, scrw=0, scrh=0;
+
+#ifndef VIDEO_MODE
#ifdef PC98
#define VIDEO_MODE M_PC98_EGC640x400
-#define VIDEO_MODE_NAME "M_PC98_EGC640x400"
-#define SCRW 640
-#define SCRH 400
#else
-#define VIDEO_MODE M_VGA_CG320
-#define VIDEO_MODE_NAME "M_VGA_CG320"
-#define SCRW 320
-#define SCRH 200
+#define VIDEO_MODE M_VESA_CG640x480
#endif
+
+#endif // #ifndef VIDEO_MODE
+
#define ORDER 13
#define CURVE 3
#define OUT 100
@@ -69,13 +69,13 @@
static __inline int
gpset(int x, int y, int val)
{
- if (x < 0 || y < 0 || SCRW <= x || SCRH <= y) {
+ if (x < 0 || y < 0 || scrw <= x || scrh <= y) {
return 0;
}
#ifdef PC98
- vid[(x + y * SCRW) >> 3] = (0x80 >> (x & 7)); /* write new dot */
+ vid[(x + y * scrw) >> 3] = (0x80 >> (x & 7)); /* write new dot */
#else
- vid[x + y * SCRW] = val;
+ vid[x + y * scrw] = val;
#endif
return 1;
}
@@ -143,8 +143,8 @@
}
vidd_load_palette(adp, dragon_pal);
- mul = ((random() & 7) + 1) * (SCRW / 320);
- org_x = random() % SCRW; org_y = random() % SCRH;
+ mul = ((random() & 7) + 1) * (scrw / 320);
+ org_x = random() % scrw; org_y = random() % scrh;
curve = 0;
order = ORDER;
@@ -231,10 +231,15 @@
/* check that the console is capable of running in 320x200x256 */
if (vidd_get_info(adp, VIDEO_MODE, &info)) {
log(LOG_NOTICE,
- "%s: the console does not support " VIDEO_MODE_NAME "\n",
+ "%s: the console does not support any of video modes it
probes\n",
SAVER_NAME);
return ENODEV;
}
+
+ printf("%d is the video mode chosen for %s\n", VIDEO_MODE, SAVER_NAME);
+
+ scrw=info.vi_width;
+ scrh=info.vi_height;
blanked = 0;
return 0;
diff -Naur dev.orig/syscons/fire/fire_saver.c dev/syscons/fire/fire_saver.c
--- dev.orig/syscons/fire/fire_saver.c 2010-06-14 11:09:06.000000000 +0900
+++ dev/syscons/fire/fire_saver.c 2010-11-14 19:45:23.000000000 +0900
@@ -45,6 +45,7 @@
#include <dev/fb/fbreg.h>
#include <dev/fb/splashreg.h>
#include <dev/syscons/syscons.h>
+#include <dev/syscons/videomode.h>
#define SAVER_NAME "fire_saver"
@@ -58,6 +59,10 @@
vidd_set_win_org(adp, last_origin = oo); \
} while (0)
+#ifndef VIDEO_MODE
+#define VIDEO_MODE M_VESA_CG640x480
+#endif
+
static u_char *buf;
static u_char *vid;
static int banksize, scrmode, bpsl, scrw, scrh;
@@ -141,7 +146,9 @@
video_info_t info;
int i, red, green, blue;
- if (!vidd_get_info(adp, M_VGA_CG320, &info)) {
+ if (!vidd_get_info(adp, VIDEO_MODE, &info)) {
+ scrmode = VIDEO_MODE;
+ } else if (!vidd_get_info(adp, M_VGA_CG320, &info)) {
scrmode = M_VGA_CG320;
} else if (!vidd_get_info(adp, M_PC98_PEGC640x480, &info)) {
scrmode = M_PC98_PEGC640x480;
@@ -149,7 +156,7 @@
scrmode = M_PC98_PEGC640x400;
} else {
log(LOG_NOTICE,
- "%s: the console does not support M_VGA_CG320\n",
+ "%s: the console does not support any of video modes it
probes.\n",
SAVER_NAME);
return (ENODEV);
}
diff -Naur dev.orig/syscons/logo/logo_saver.c dev/syscons/logo/logo_saver.c
--- dev.orig/syscons/logo/logo_saver.c 2010-06-14 11:09:06.000000000 +0900
+++ dev/syscons/logo/logo_saver.c 2010-11-14 19:45:40.000000000 +0900
@@ -39,6 +39,7 @@
#include <dev/fb/fbreg.h>
#include <dev/fb/splashreg.h>
#include <dev/syscons/syscons.h>
+#include <dev/syscons/videomode.h>
#define SAVER_NAME "logo_saver"
@@ -48,6 +49,10 @@
vidd_set_win_org(adp, last_origin = oo); \
} while (0)
+#ifndef VIDEO_MODE
+#define VIDEO_MODE M_VESA_CG640x480
+#endif
+
extern unsigned int logo_w;
extern unsigned int logo_h;
extern unsigned char logo_pal[];
@@ -136,7 +141,9 @@
{
video_info_t info;
- if (!vidd_get_info(adp, M_VESA_CG800x600, &info)) {
+ if (!vidd_get_info(adp, VIDEO_MODE, &info)) {
+ scrmode = VIDEO_MODE;
+ } else if (!vidd_get_info(adp, M_VESA_CG800x600, &info)) {
scrmode = M_VESA_CG800x600;
} else if (!vidd_get_info(adp, M_VGA_CG320, &info)) {
scrmode = M_VGA_CG320;
@@ -146,7 +153,7 @@
scrmode = M_PC98_PEGC640x400;
} else {
log(LOG_NOTICE,
- "%s: the console does not support M_VGA_CG320\n",
+ "%s: the console does not support any of video modes it
probes\n",
SAVER_NAME);
return (ENODEV);
}
diff -Naur dev.orig/syscons/rain/rain_saver.c dev/syscons/rain/rain_saver.c
--- dev.orig/syscons/rain/rain_saver.c 2010-06-14 11:09:06.000000000 +0900
+++ dev/syscons/rain/rain_saver.c 2010-11-14 19:46:03.000000000 +0900
@@ -39,6 +39,7 @@
#include <dev/fb/fbreg.h>
#include <dev/fb/splashreg.h>
#include <dev/syscons/syscons.h>
+#include <dev/syscons/videomode.h>
#define SAVER_NAME "rain_saver"
#ifdef MAX
@@ -57,6 +58,10 @@
vidd_set_win_org(adp, last_origin = oo); \
} while (0)
+#ifndef VIDEO_MODE
+#define VIDEO_MODE M_VESA_CG640x480
+#endif
+
static u_char *vid;
static int banksize, scrmode, bpsl, scrw, scrh;
static u_char rain_pal[768];
@@ -141,7 +146,9 @@
video_info_t info;
int i;
- if (!vidd_get_info(adp, M_VGA_CG320, &info)) {
+ if (!vidd_get_info(adp, VIDEO_MODE, &info)) {
+ scrmode = VIDEO_MODE;
+ } else if (!vidd_get_info(adp, M_VGA_CG320, &info)) {
scrmode = M_VGA_CG320;
} else if (!vidd_get_info(adp, M_PC98_PEGC640x480, &info)) {
scrmode = M_PC98_PEGC640x480;
@@ -149,7 +156,7 @@
scrmode = M_PC98_PEGC640x400;
} else {
log(LOG_NOTICE,
- "%s: the console does not support M_VGA_CG320\n",
+ "%s: the console does not support any of video modes it
probes\n",
SAVER_NAME);
return (ENODEV);
}
diff -Naur dev.orig/syscons/videomode.h dev/syscons/videomode.h
--- dev.orig/syscons/videomode.h 1970-01-01 09:00:00.000000000 +0900
+++ dev/syscons/videomode.h 2010-11-14 19:54:26.000000000 +0900
@@ -0,0 +1,14 @@
+#ifndef _videomode_
+#define _videomode_
+
+#include <sys/fbio.h>
+
+// VIDEO_MODE should be one of 8bit VGA modes
+// because screensavers assume 8bit mode screen.
+// The current value of VIDEO_MODE is just an example.
+// Change it to whatever 8bit mode shown in "vidcontrol -i mode"
+// Many of those numeral mode values are defined as
+// #define macros in /usr/src/sys/sys/fbio.h
+#define VIDEO_MODE M_VESA_CG640x480
+
+#endif
diff -Naur dev.orig/syscons/warp/warp_saver.c dev/syscons/warp/warp_saver.c
--- dev.orig/syscons/warp/warp_saver.c 2010-06-14 11:09:06.000000000 +0900
+++ dev/syscons/warp/warp_saver.c 2010-11-14 19:46:20.000000000 +0900
@@ -39,6 +39,7 @@
#include <dev/fb/fbreg.h>
#include <dev/fb/splashreg.h>
#include <dev/syscons/syscons.h>
+#include <dev/syscons/videomode.h>
#define SAVER_NAME "warp_saver"
#define SPP 15
@@ -50,6 +51,10 @@
vidd_set_win_org(adp, last_origin = oo); \
} while (0)
+#ifndef VIDEO_MODE
+#define VIDEO_MODE M_VESA_CG640x480
+#endif
+
static u_char *vid;
static int banksize, scrmode, bpsl, scrw, scrh;
static int blanked;
@@ -127,7 +132,9 @@
video_info_t info;
int i;
- if (!vidd_get_info(adp, M_VGA_CG320, &info)) {
+ if (!vidd_get_info(adp, VIDEO_MODE, &info)) {
+ scrmode = VIDEO_MODE;
+ } else if (!vidd_get_info(adp, M_VGA_CG320, &info)) {
scrmode = M_VGA_CG320;
} else if (!vidd_get_info(adp, M_PC98_PEGC640x480, &info)) {
scrmode = M_PC98_PEGC640x480;
@@ -135,7 +142,7 @@
scrmode = M_PC98_PEGC640x400;
} else {
log(LOG_NOTICE,
- "%s: the console does not support M_VGA_CG320\n",
+ "%s: the console does not support any of video modes it
probes\n",
SAVER_NAME);
return (ENODEV);
}
>Release-Note:
>Audit-Trail:
>Unformatted:
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