Hi Michael,
Thanks heaps for the reply (also Billy, to whom I replied privately).
On Fri Feb 14 2003 at 04:19, "Michael R. Tharp" wrote:
> >>v4l-conf (and therefore xawtv) was all of a sudden failing with the
> >>following error: "can't open /dev/video0: Cannot allocate memory".
> >
> > Well I re-read your post and realized I probably misread it. The
> >app actually can't open /dev/video0 ?
That's right, v4l-conf can't open it, apps can't open it. It's just
*weird*. The drivers load and the /proc/video/dev/ files look good.
(And with regard to Billy's reply, Load "v4l" is in my XF86Config,
see my previous messages).
> Could this be a simple permissions problem?
crw------- 1 tony root 81, 0 Jun 29 2002 /dev/video0
> Try it as root and see what happens.
Nope, same problem. Been there, done that :)
Changing permissions to tony.tony doesn't work either (nor for perms
to 666 etc).
> I had trouble with PAM and the NVidia driver (briefly :-) )
(really? that's never happened for me)
> This is just a thought though... I'm not a developer...yet.
Thanks anyway.
For almost 5 weeks now I've looked at this from all sorts of angles.
Nothing tells me why it fails... if I could work that out then I
would at least have some ideas about what to do about fixing it.
But that's all I get: can't allocate memory. Yet it did work with a
TNT card.
It just doesn't make any sense. Even strace'ing gives no real
clues, it just simply fails:
[ ... cut lots of stuff from running tvtime ... ]
rt_sigaction(SIGALRM, {0x80517e0, [], 0x4000000}, {SIG_DFL}, 8) = 0
open("/dev/video0", O_RDWR) = -1 ENOMEM (Cannot allocate memory)
write(2, "videoinput: Can\'t open \'/dev/vid"..., 61) = 61
write(2, "tvtime: Can\'t open video input, "..., 62) = 62
_exit(1) = ?
[ ... cut lots of stuff from running xawtv ... ]
fork() = 2637
wait4(2637, [WIFEXITED(s) && WEXITSTATUS(s) == 0], 0, NULL) = 2637
rt_sigaction(SIGINT, {0x40034e90, [], 0x4000000}, NULL, 8) = 0
rt_sigaction(SIGQUIT, {SIG_DFL}, NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [RTMIN], NULL, 8) = 0
--- SIGCHLD (Child exited) ---
wait4(-1, 0xbffff13c, WNOHANG|WUNTRACED, NULL) = -1 ECHILD (No child processes)
sigreturn() = ? (mask now [RTMIN])
open("/dev/video0", O_RDWR|O_LARGEFILE) = -1 ENOMEM (Cannot allocate memory)
...
write(2, "v4l2: open /dev/video0: Cannot a"..., 47) = 47
open("/dev/video0", O_RDWR|O_LARGEFILE) = -1 ENOMEM (Cannot allocate memory)
write(2, "v4l: open /dev/video0: Cannot al"..., 46) = 46
write(2, "no video grabber device availabl"..., 34) = 34
_exit(1) = ?
> -Mike Tharp-
Cheers
Tony
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