Help with Sony SZ laptop internal webcam

[wu_qso]

I have a new Sony SZ laptop and have installed the modified r5u870 driver at http://ubuntuforums.org/showthread.php?t=514292&page=3. Then after rebooted and, as root, I ran 'caminfo' and got

Detected 1 Video4Linux devices.
Device node : /dev/video0
Name of device : "Sony VGP-VCC7 #1"
Minimum size : 48x32
Current size : 0x0
Maximum size : 640x480
Video inputs : 1
Input 0
Name : "Camera"
Type : Camera
Audio : no
Tuners : 0
Audio inputs : 0

# ls /dev/video* gives
/dev/video /dev/video0

But camstream and Ekiga both claims no device found. Anybody can give any idea? Thanks!

[wu_qso]

The link at 'http://www.uuhaus.de/linux/Debian%20Linux%20on%20the%20Sony%20VGN-TZ21VN.html' also presents a method to install the driver for the Sony SZ laptop 'motion eye' camera but the driver seems not work on my laptop with Fedora. See also the discuss of Thomas's blog 'http://moelhave.dk/gnulinux-ubuntu-gutsy-gibbon-710-on-the-sony-vaio-sz6-series/'.

[wu_qso]

Originally Posted by wu_qso

I have a new Sony SZ laptop and have installed the modified r5u870 driver at http://ubuntuforums.org/showthread.php?t=514292&page=3. Then after rebooted and, as root, I ran 'caminfo' and got

Detected 1 Video4Linux devices.
Device node : /dev/video0
Name of device : "Sony VGP-VCC7 #1"
Minimum size : 48x32
Current size : 0x0
Maximum size : 640x480
Video inputs : 1
Input 0
Name : "Camera"
Type : Camera
Audio : no
Tuners : 0
Audio inputs : 0

# ls /dev/video* gives
/dev/video /dev/video0

But camstream and Ekiga both claims no device found. Anybody can give any idea? Thanks!

The driver works, but for root only! So I checked the right of the users to use the device as

# ls -l /dev/video*
lrwxrwxrwx 1 root root 6 01-11 08:44 /dev/video -> video0
crw------- 1 root root 81, 0 01-11 08:44 /dev/video0

then

# chmod 777 /dev/video0
# ls -l /dev/video*
lrwxrwxrwx 1 root root 6 01-11 08:44 /dev/video -> video0
crwxrwxrwx 1 root root 81, 0 01-11 08:44 /dev/video0

Non-root users can use the camera now!

Problems:
1. is there any security issue after changing the right of '/dev/video0'?
2. each time the system is rebooted the right of '/dev/video0' changes back to 'crw-------'.