[linux-dvb] Re: can't get tuxview/gVideo to work

[Reinhard Katzmann <suamor@gmx.net>]

Hi!

Ok some news to the tuxview problems. Meanwhile I added some checks to the
program for the NULL pointer. This did not help :-(
I updated my kernel to 2.4.2-25mdk (which is a patched 2.4.2acx Kernel)
and XFree to 4.0.3-3mdk. I'm not using devfs currently.

> > all seems compiled and installed fine (see end of this email)
> > I also have some expirences on the old Mandrake 7.2 (no problems)
> 
> Same here.

Here is my gdb output (dvb 0.8.2, modified tuxview, diff is in more far
below:

[root@linux src]# gdb ./tuxview
GNU gdb 5.0
...
This GDB was configured as "i586-mandrake-linux"...
(gdb) r 
Starting program: /usr/src/RPM/BUILD/DVB/apps/tuxzap/src/./tuxview 
[New Thread 1024 (LWP 1453)]
ERROR: getting video capabilities

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1024 (LWP 1453)]
init_graphics (dev=-1, bpp=0, norm=0, remote=0, onoff=1, channel=0)
    at interface2.cc:193
193		a_group = gwidget->accel_group;

(gdb) c
Continuing.
rw_common (): read: No such process.
rw_common (): read: No such process.

Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.
(gdb) q

I just mention it as someone reported no problems with Kernel2.4.3.
AFAIK the late ac-Kernels usually are more advanced than the official
kernel (even when it's a 2.4.2 ;-) I downloaded and installed it monday.
I think the problem is not solved. I also don't know where to search
further for the problem.

The kernel output looks like this:
Apr  4 11:35:35 linux dvb: Loading DVB driver modules succeeded
Apr  4 11:36:13 linux kernel: dvb: dvb_close called
Apr  4 11:36:13 linux kernel: dvb: dvb_mmap called, adr:803c7601, size:0xbffff57c
Apr  4 11:36:13 linux kernel: dvb: dvb_mmap failed!
Apr  4 11:36:13 linux modprobe: modprobe: Can't locate module char-major-81-1
Apr  4 11:36:13 linux modprobe: modprobe: Can't locate module char-major-81-2
Apr  4 11:36:13 linux modprobe: modprobe: Can't locate module char-major-81-3

lsmod    
Module                  Size  Used by
msp3400                13520   0  (unused)
tuner                   3952   0  (unused)
dvb                  2957744  -1  (unused)
dvb_demux               5120   0  [dvb]
dmxdev                  5840   0  [dvb]
VES1820                 3664   0  (unused)
VES1893                 3584   0  (unused)
saa7146_v4l            15312   0  (unused)
saa7146_core           13216   0  [dvb saa7146_v4l]
videodev                4608   2  [dvb]
i2c-core               12208   0  [msp3400 tuner dvb VES1820 VES1893 saa7146_core]
ca                       896   0  (unused)
frontend                 992   0  (unused)
sec                      912   0  (unused)
audio                   1152   0  (unused)
video                   1056   0  (unused)
dmx                     1104   0  (unused)
demux                    608   1  [dvb dvb_demux]
dvbdev                  1680   1  [dvb dvb_demux VES1820 VES1893 ca frontend sec audio video dmx]

(Note that dvb is still at "-1", so my "fix" did not help in this regard).

Ok here are the diffs:
--- gtvscreen2.c_orig	Wed Apr  4 11:49:22 2001
+++ gtvscreen2.c	Wed Apr  4 11:30:35 2001
@@ -352,6 +352,7 @@
 	unsigned char *tm;
 	int msize;
 
+	if (!gtv) return;
 #ifndef NOCARD
 	if (myioctl(gtv->fbttv, VIDIOCGWIN, &(gtv->vwin)))
 		perror("get window");
@@ -1094,6 +1095,7 @@
 	printf("set value: %i   %i\n", val_type, (int) value);
 #endif
 
+	if (!gtv) return FALSE;
 	pictmod = FALSE;
 	switch (val_type) {
 
@@ -1255,7 +1257,7 @@
 
 gboolean gtvscreen_get_values(Gtvscreen * gtv, gint val_type, gint * value)
 {
-
+	if (!gtv) return FALSE;
 #ifdef DEBUG
 	printf("get value: %i  %i\n", val_type, (int) value);
 #endif

Best regards,

Reinhard Katzmann
-- 
E-Mail: reinhard@suamor.de
New GnuPG Public Key available on request


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