Ubuntu中文论坛

先是：apt-get source gspca-source

之后就是 make 和 install

加载：sudo modprobe gspca

Bus 005 Device 001: ID 0000:0000
Bus 004 Device 002: ID 04c8:0720 Konica Corp. Digital Color Camera
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000

drivers/media/video/usbvideo/konicawc.c: Lost sync on frames
drivers/media/video/usbvideo/konicawc.c: Lost sync on frames
drivers/media/video/usbvideo/konicawc.c: Lost sync on frames

Distribution:Debian GNU/Linux 3.1
Hardware Environment: Intel YC76 USB webcam
Software Environment: kernel 2.6.8, konicawc kernel module
Problem Description:
The kernel keeps printing "Lost sync on frames" error messages as soon as a
program tries to access the webcam. No video data can be retrieved from the webcam.

The following patch seems enough to solve the problem. (just inverting the order
at which the old and new data blocks are sent to the user).

--- drivers/usb/media/konicawc.c.old 2004-08-27 10:37:43.000000000 +0200
+++ drivers/usb/media/konicawc.c 2004-08-27 11:51:00.000000000 +0200
@@ -362,8 +362,8 @@
else if (!urb->status && !cam->last_data_urb->status)
len = konicawc_compress_iso(uvd, cam->last_data_urb, urb);

- resubmit_urb(uvd, urb);
resubmit_urb(uvd, cam->last_data_urb);
+ resubmit_urb(uvd, urb);
cam->last_data_urb = NULL;
uvd->stats.urb_length = len;
uvd->stats.data_count += len;