Have tried the camera in windows on another computer and this computer
and there it works just fine... :-(
Have also discovered that I can use vidcat to get single images, but
when using xawtv or gnomemeeting the image freezes after a few seconds.
I also tried using vidcat in a loop and got the same result, it hung
after a few seconds as well. I get the same messages all the time, I'm
no expert on usb or the OV511 but it seems to me that the
"[ov51x_isoc_irq:3669] Zero-length packet" messages is what's going
wrong.
Here is the script which loops vidcat:
#!/bin/sh
while true; do
vidcat -d /dev/video0 -f jpeg -o testar.jpg -p y -s 640x480
done
If I'm posting this to the wrong place, please tell me and I will not
post this issue here anymore.
On Fri, 2005-03-18 at 12:31 +0100, Jonatan Åkerlind wrote:
> I have some trouble with getting this thing to work. I had it working
> about a year ago on another machine, but don't remember how I did that.
>
> Here's what happens:
>
> I plug the camera in and load the ov511 module (or in opposite order,
> makes no difference). With the debug=4 I get a lot of messages, but what
> I see a lot of are these lines:
>
> <snip>
> Mar 18 12:11:12 [kernel] drivers/usb/media/ov511.c: [ov51x_stop:1071]
> stopping
> Mar 18 12:11:12 [kernel] drivers/usb/media/ov511.c:
> [ov51x_isoc_irq:3669] Zero-length packet
> Mar 18 12:11:12 [kernel] drivers/usb/media/ov511.c: [ov51x_restart:1085]
> restarting
> Mar 18 12:11:12 [kernel] drivers/usb/media/ov511.c:
> [ov51x_isoc_irq:3669] Zero-length packet
> Mar 18 12:11:12 [kernel] drivers/usb/media/ov511.c:
> [sensor_set_brightness:1489] 29440
> Mar 18 12:11:12 [kernel] drivers/usb/media/ov511.c: [ov51x_stop:1071]
> stopping
> Mar 18 12:11:12 [kernel] drivers/usb/media/ov511.c:
> [ov51x_isoc_irq:3669] Zero-length packet
> </snip>
>
> They seem to appear like this together or among other messages.
> Then I try to get a picture with xawtv, which works for a few seconds
> and then the image freezes and xawtv gives me theese lines:
>
> ioctl: VIDIOCMCAPTURE(frame=0;height=48;width=64;format=7): Invalid
> argument
> v4l: timeout (got SIGALRM), hardware/driver problems?
> ioctl: VIDIOCSYNC(int=0): Interrupted system call
> v4l: timeout (got SIGALRM), hardware/driver problems?
> ioctl: VIDIOCSYNC(int=1): Interrupted system call
> game over
>
> In the log I again see _a lot_ of zero-length packets:
>
> <snip>
> Mar 18 12:11:19 [kernel] drivers/usb/media/ov511.c:
> [ov511_move_data:3384] Frame start, framenum = 1
> Mar 18 12:11:20 [kernel] drivers/usb/media/ov511.c:
> [ov511_move_data:3343] Frame end, frame=1, pnum=168, w=384, h=288,
> recvd=166647
> Mar 18 12:11:20 [kernel] drivers/usb/media/ov511.c:
> [ov51x_v4l1_ioctl_internal:4381] VIDIOCMCAPTURE: frame: 1, 384x288,
> YUV420P
> Mar 18 12:11:20 [kernel] drivers/usb/media/ov511.c:
> [ov51x_v4l1_ioctl_internal:4441] VIDIOCMCAPTURE: renewing frame 1
> Mar 18 12:11:20 [kernel] drivers/usb/media/ov511.c:
> [ov51x_new_frame:3849] ov->curframe = 0, framenum = 1
> Mar 18 12:11:20 [kernel] drivers/usb/media/ov511.c:
> [ov51x_v4l1_ioctl_internal:4459] syncing to frame 0, grabstate = 1
> Mar 18 12:11:20 [kernel] drivers/usb/media/ov511.c:
> [ov51x_isoc_irq:3669] Zero-length packet
> - Last output repeated 499 times -
> Mar 18 12:11:25 [kernel] drivers/usb/media/ov511.c:
> [ov51x_v4l1_ioctl_internal:4459] syncing to frame 1, grabstate = 1
> Mar 18 12:11:25 [kernel] drivers/usb/media/ov511.c:
> [ov51x_isoc_irq:3669] Zero-length packet
> - Last output repeated 1238 times -
> Mar 18 12:11:37 [kernel] drivers/usb/media/ov511.c:
> [ov51x_v4l1_close:4085] ov511_close
> Mar 18 12:11:37 [kernel] drivers/usb/media/ov511.c:
> [ov51x_stop_isoc:3831] *** Stopping capture ***
> Mar 18 12:11:37 [kernel] drivers/usb/media/ov511.c: [ov51x_stop:1071]
> stopping
> Mar 18 12:11:37 [kernel] drivers/usb/media/ov511.c:
> [ov511_set_packet_size:1236] 0, mult=0, alt=7
> Mar 18 12:11:37 [kernel] drivers/usb/media/ov511.c:
> [ov51x_isoc_irq:3633] no device, or not open
> - Last output repeated twice -
> Mar 18 12:11:37 [kernel] drivers/usb/media/ov511.c: [ov51x_reset:565]
> Reset: type=0x3F
> Mar 18 12:11:37 [kernel] drivers/usb/media/ov511.c: [ov51x_restart:1085]
> restarting
> Mar 18 12:11:37 [kernel] drivers/usb/media/ov511.c: [ov51x_dealloc:4009]
> entered
> Mar 18 12:11:37 [kernel] drivers/usb/media/ov511.c:
> [ov51x_do_dealloc:3903] entered
> Mar 18 12:11:37 [kernel] drivers/usb/media/ov511.c:
> [ov51x_do_dealloc:3934] buffer memory deallocated
> Mar 18 12:11:37 [kernel] drivers/usb/media/ov511.c:
> [ov51x_do_dealloc:3936] leaving
> Mar 18 12:11:37 [kernel] drivers/usb/media/ov511.c: [ov51x_dealloc:4013]
> leaving
> </snip>
>
> I'm running kernel 2.6.11-gentoo-r4 with ov511 v1.64.
> Have tried the newer 2.28 but all I got was:
>
> ov511: Unknown symbol remap_page_range
>
> also tried it using 2.6.11.2 with the same results. My USB hardware as
> reported by lspci -v:
>
> 0000:00:13.0 USB Controller: NEC Corporation USB (rev 41) (prog-if 10
> [OHCI])
> Subsystem: Compaq Computer Corporation: Unknown device 0056
> Flags: bus master, medium devsel, latency 64, IRQ 11
> Memory at f0017000 (32-bit, non-prefetchable)
> Capabilities: [40] Power Management version 2
>
> 0000:00:13.1 USB Controller: NEC Corporation USB (rev 41) (prog-if 10
> [OHCI])
> Subsystem: Compaq Computer Corporation: Unknown device 0056
> Flags: bus master, medium devsel, latency 64, IRQ 11
> Memory at f0018000 (32-bit, non-prefetchable)
> Capabilities: [40] Power Management version 2
>
> 0000:00:13.2 USB Controller: NEC Corporation USB 2.0 (rev 02) (prog-if
> 20 [EHCI])
> Subsystem: Compaq Computer Corporation: Unknown device 0056
> Flags: bus master, medium devsel, latency 132, IRQ 11
> Memory at f0019c00 (32-bit, non-prefetchable)
> Capabilities: [40] Power Management version 2
>
> Any help appreciated!
--
Jonatan Åkerlind <[EMAIL PROTECTED]>
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