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#1 2010-07-23 14:20:30

JimmySJ84
Member
Registered: 2010-07-23
Posts: 12

[SOLVED] uvcvideo webcams not working with kernel newer than 2.6.32

Hi Guys,

I have a funny problem with my laptop:

Since I have been running with kernel newer that 2.6.32 my webcam is not working very well, while i'm chatting with skype or using cheese after few minutes the video freezes. to sort this out i tried another webcam but the problem is still on! both webcams use uvcvideo module

device ID are: 045e:0728 and 046d:0802

i tried many distro (sidux, pclinuxos, ubuntu, etc) but without any luck!

This is the only issue that I have with my lovely and shining ArchLinux box, please help to sort this out!!

Thanks a lot in advance

Salvo

Last edited by JimmySJ84 (2010-11-04 18:26:55)

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#2 2010-07-26 11:18:20

killer1804
Member
From: Russia, Zlatoust
Registered: 2010-07-26
Posts: 55

Re: [SOLVED] uvcvideo webcams not working with kernel newer than 2.6.32

after full system upgrade from kernel 2.6.32 to 2.6.34  my webcam (a4tech PK-635m) is has ceased to work.

The microphone is work fine, but an image - is only a black or green screen.

No one software is not work whis my webcam.

[user0@homelinux ~]$ cat /dev/video0
cat: /dev/video0: Input/output error
[user0@homelinux ~]$

[user0@homelinux ~]$ lsusb
.....
Bus 002 Device 005: ID 0ac8:303b Z-Star Microelectronics Corp. ZC0303 Webcam
.......
[user0@homelinux ~]$


[user0@homelinux ~]$ tail /var/log/messages.log
Jul 22 12:04:33 homelinux kernel: gspca: video0 released
Jul 22 12:04:34 homelinux kernel: usb 2-4: new full speed USB device using
ohci_hcd and address 7
Jul 22 12:04:35 homelinux kernel: gspca: probing 0ac8:303b
Jul 22 12:04:36 homelinux kernel: zc3xx: probe 2wr ov vga 0x0000
Jul 22 12:04:36 homelinux kernel: zc3xx: probe 3wr vga 1 0xc001
Jul 22 12:04:36 homelinux kernel: zc3xx: probe sensor -> 0013
Jul 22 12:04:36 homelinux kernel: zc3xx: Find Sensor MI0360SOC. Chip
revision c001
Jul 22 12:04:36 homelinux kernel: input: zc3xx as
/devices/pci0000:00/0000:00:02.0/usb2/2-4/input/input11
Jul 22 12:04:36 homelinux kernel: gspca: video0 created
Jul 22 12:04:36 homelinux kernel: gspca: found int in endpoint: 0x82,
buffer_len=8, interval=10
[user0@homelinux ~]$

[user0@homelinux ~]$ ls -l /dev/video*
lrwxrwxrwx  1 root root      6 Jul 26 17:10 /dev/video -> video0
crw-rw----+ 1 root video 81, 0 Jul 26 17:10 /dev/video0
[user0@homelinux ~]$

[user0@homelinux ~]$ groups
log video audio user0
[user0@homelinux ~]$

[user0@homelinux ~]$ dmesg | grep gspca | uniq
gspca: main v2.9.0 registered
gspca: probing 0ac8:303b
gspca: video0 created
gspca: found int in endpoint: 0x82, buffer_len=8, interval=10
gspca: video0 disconnect
gspca: video0 released
gspca: probing 0ac8:303b
gspca: video0 created
gspca: found int in endpoint: 0x82, buffer_len=8, interval=10
[user0@homelinux ~]$

can you help me to make my webcam work again ?

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#3 2010-11-04 18:26:25

JimmySJ84
Member
Registered: 2010-07-23
Posts: 12

Re: [SOLVED] uvcvideo webcams not working with kernel newer than 2.6.32

I'm sorry but I dont know how to solve your problem..

On the other hand, I partially solved mine:

It seems that disabling the cpu scaling during the videocalling everything works fine!

Salvo

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