Problems with LDLC 0x0ac8:0x307b

Hi all,

I am using Ubuntu 8.04 with kernel 2.6.24-17-generic SMP with gspca driver
01.00.20. I have a "Bright 480" camera which is equivalent to a camera
recently added to GSPCA:

Release 01.00.19 rc2
        Add LDLC 0x0ac8:0x307b Thanks Pierre Quelen/Didier Leclerc for the
webcam.

dmesg shows the driver is loaded correctly (I am using the options: options
gspca force_rgb=1 autoexpo=0 debug=4 GGreen=255 GBlue=255 GRed=255
OffGreen=1 OffBlue=1 OffRed=1 gamma=2 in /etc/modprobe.d/options):
[ 4520.775103]
/build/buildd/linux-ubuntu-modules-2.6.24-2.6.24/debian/build/build-generic/media/gspcav1/gspca_core.c:
USB GSPCA camera found.(ZC3XX)
[ 4520.779885]
/build/buildd/linux-ubuntu-modules-2.6.24-2.6.24/debian/build/build-generic/media/gspcav1/gspca_core.c:
data format set to RGB
[ 4520.779924] usbcore: registered new interface driver gspca
[ 4520.779932]
/build/buildd/linux-ubuntu-modules-2.6.24-2.6.24/debian/build/build-generic/media/gspcav1/gspca_core.c:
gspca driver 01.00.20 registered

However, I couldn't make it work under Ubuntu yet. It works ok under Windows
XP. When I try to use gqcam, it shows the controls but nothing on the
screen; and if I try to change preferences, stop capturing or even just
leaving the program, it freezes. If I use camorama , it simply freezes at
start. And when I use camstream, it freezes when I try to change the
resolution setting (and no image appears at all).

camstream reports this, before freezing:
(...)
  D: No Philips webcam detected, removing extension tab
  D: CCamPanel::SetSize(176x144)
  D: CCamPanel::SetImageSize(176x144)
  D: CCamPanel::SetVisibleSize(176x144)
  D: CCamPanel::SetSize(176x144)
  D: CCamPanel::SetImageSize(176x144)
  D: CCamPanel::SetVisibleSize(176x144)
  >> void CWebCamViewer::RecalcTotalViewSize()
  << void CWebCamViewer::RecalcTotalViewSize()
<< CWebCamViewer::CWebCamViewer(CVideoDevice*, QWidget*, const char*)
D: >> CVideoDevice::IncrementPalette(0)
D: >> CVideoDeviceLinux::StartCapture()
D: CVideoDeviceLinux::SetPalette picked palette 5 [rgb32]
D: >> CVideoDeviceLinux::CreateImagesRGB()
D: << CVideoDeviceLinux::CreateImagesRGB()
D: >> CVideoDeviceLinux::run()...
D: << CVideoDeviceLinux::StartCapture()
D: << CVideoDevice::IncrementPalette()
D: >> CVideoDeviceLinux::SetSize(640x480)
D: >> CVideoDeviceLinux::StopCapture()
D: Waiting for capture thread to stop...


caminfo (from camstream) reports this string: LDLC OV7620+VC302.

camorama reports this:
Name: LDLC OV7620+VC302
Type: 1
    Can capture
Channels: 1
Audios: 0
Maxwidth: 640
Maxheight: 480
Minwidth: 160
Minheight: 120
---------
X: 0
Y: 0
Width: 320
Height: 240
Chromakey: 0
Flags: 0
---------
Brightness:    32768 (128)
Hue:        0 (0)
Color:        0 (0)
Contrast:    32768 (128)
Whiteness:    0 (0)
Depth:        24
Palette:    4 - RGB24

On dmesg, after trying the camera with there programs, there are lots of
warnings:

[45216.855059]
/build/buildd/linux-ubuntu-modules-2.6.24-2.6.24/debian/build/build-generic/media/gspcav1/gspca_core.c:
VIDIOCMCAPTURE: invalid format (7)
[45221.370469]
/build/buildd/linux-ubuntu-modules-2.6.24-2.6.24/debian/build/build-generic/media/gspcav1/gspca_core.c:
VIDIOCMCAPTURE: invalid format (9)
[45229.286227]
/build/buildd/linux-ubuntu-modules-2.6.24-2.6.24/debian/build/build-generic/media/gspcav1/gspca_core.c:
VIDIOCMCAPTURE: invalid format (1)
[45229.286720]
/build/buildd/linux-ubuntu-modules-2.6.24-2.6.24/debian/build/build-generic/media/gspcav1/gspca_core.c:
VIDIOCMCAPTURE: invalid format (13)

Can you tell me what could be going wrong? This is a cheap webcam I bought
recently, hope I can make it work under Ubuntu since I don't use windows at
all.
Thanks and congratulations for the nice job,

Patola / Cláudio

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