Cheese gives a black screen with the light on.
Webcamoid does the same.
Zoom does the same.
Attached is the output of v4l-info.
All of these work on the Inspiron 15 3000 but not on the Inspiron 16.
They both have the same camera. The only difference is that the Inspiron
15 camera is on usb bus 1 while the Inspiron 16 camera is on usb bus 2.
Thanks for the reply.
Paul
-------------------------
On 2/12/23 18:23, Laurent Pinchart wrote:
Hi Paul,
Please don't drop the mailing list in your replies.
On Sun, Feb 12, 2023 at 05:06:37PM -0500, Paul Neelands wrote:
Hi,
Thanks for the reply.
There is only one video device so I am confused about video0 & video1.
ls -l /dev/video*
crw-rw----+ 1 root video 81, 0 Feb 12 16:23 /dev/video0
crw-rw----+ 1 root video 81, 1 Feb 12 16:23 /dev/video1
ls -l /sys/class/video4linux/video*
lrwxrwxrwx 1 root root 0 Feb 12 16:23 /sys/class/video4linux/video0->
../../devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/video4linux/video0
lrwxrwxrwx 1 root root 0 Feb 12 16:23 /sys/class/video4linux/video1->
../../devices/pci0000:00/0000:00:14.0/usb2/2-6/2-6:1.0/video4linux/video1
lsusb -v -d 0c45:6739 is attached as file lsusb.
*/var/log/kern.**log is attached as file klog*
Nothing strikes me as wrong there. You said your webcam doesn't work,
could you please elaborate ?
On 2/12/23 16:04, Laurent Pinchart wrote:
Hi Paul,
(CC'ing the linux-media mailing list)
On Sun, Feb 12, 2023 at 02:51:33PM -0500, Paul Neelands wrote:
Hi.
I have a new dell Inspiron 16 5620 where the camera doesn't work. The camera
is the same as a Dell Inspiron 15 3000 that I have where it works. The
difference between the two machines is that on the I15 it is on usb bus 1
whereas it is on bus 2 on the I16.
I downloaded and built the latest kernel 6.2.0-rc7 and no joy. I looked at your
driver for the camera uvcvideo but haven't yet figured out where it finds the
usb bus. The lsusb of the camera is:
Bus 002 Device 004: ID 0c45:6739 Microdia Integrated_Webcam_FHD
The kernel finds it with the demsg:
13.999455] usb 2-6: Found UVC 1.00 device Integrated_Webcam_FHD (0c45:6739)
14.059462] usbcore: registered new interface driver uvcvideo
I would really appreciate some help on where and how the usb bus gets
enumerated for the camera.
What's the output of `ls -l /sys/class/video4linux/video*/` and
`ls -l /dev/video*` ?
Could you provide your full kernel log, as well as the output of
`lsusb -v -d 0c45:6739` (if possible running as root, for instance with
sudo) ?
v4l-info
### v4l2 device info [/dev/video0] ###
general info
VIDIOC_QUERYCAP
driver : "uvcvideo"
card : "Integrated_Webcam_FHD: Integrat"
bus_info : "usb-0000:00:14.0-6"
version : 6.2.0
capabilities : 0x84a00001 [VIDEO_CAPTURE,?,?,STREAMING,(null)]
standards
inputs
VIDIOC_ENUMINPUT(0)
index : 0
name : "Camera 1"
type : CAMERA
audioset : 0
tuner : 0
std : 0x0 []
status : 0x0 []
video capture
VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
index : 0
type : VIDEO_CAPTURE
flags : 1
description : "Motion-JPEG"
pixelformat : 0x47504a4d [MJPG]
VIDIOC_ENUM_FMT(1,VIDEO_CAPTURE)
index : 1
type : VIDEO_CAPTURE
flags : 0
description : "YUYV 4:2:2"
pixelformat : 0x56595559 [YUYV]
VIDIOC_G_FMT(VIDEO_CAPTURE)
type : VIDEO_CAPTURE
fmt.pix.width : 1920
fmt.pix.height : 1080
fmt.pix.pixelformat : 0x47504a4d [MJPG]
fmt.pix.field : NONE
fmt.pix.bytesperline : 0
fmt.pix.sizeimage : 4147789
fmt.pix.colorspace : SRGB
fmt.pix.priv : 4276996862
controls
VIDIOC_QUERYCTRL(BASE+0)
id : 9963776
type : INTEGER
name : "Brightness"
minimum : -64
maximum : 64
step : 1
default_value : 0
flags : unknown
VIDIOC_QUERYCTRL(BASE+1)
id : 9963777
type : INTEGER
name : "Contrast"
minimum : 0
maximum : 95
step : 1
default_value : 0
flags : unknown
VIDIOC_QUERYCTRL(BASE+2)
id : 9963778
type : INTEGER
name : "Saturation"
minimum : 0
maximum : 100
step : 1
default_value : 64
flags : unknown
VIDIOC_QUERYCTRL(BASE+3)
id : 9963779
type : INTEGER
name : "Hue"
minimum : -2000
maximum : 2000
step : 1
default_value : 0
flags : unknown
VIDIOC_QUERYCTRL(BASE+12)
id : 9963788
type : BOOLEAN
name : "White Balance, Automatic"
minimum : 0
maximum : 1
step : 1
default_value : 1
flags : unknown
VIDIOC_QUERYCTRL(BASE+16)
id : 9963792
type : INTEGER
name : "Gamma"
minimum : 100
maximum : 300
step : 1
default_value : 100
flags : unknown
VIDIOC_QUERYCTRL(BASE+19)
id : 9963795
type : INTEGER
name : "Gain"
minimum : 1
maximum : 8
step : 1
default_value : 1
flags : unknown
VIDIOC_QUERYCTRL(BASE+24)
id : 9963800
type : MENU
name : "Power Line Frequency"
minimum : 0
maximum : 2
step : 1
default_value : 2
flags : unknown
VIDIOC_QUERYCTRL(BASE+26)
id : 9963802
type : INTEGER
name : "White Balance Temperature"
minimum : 2800
maximum : 6500
step : 1
default_value : 4600
flags : INACTIVE
VIDIOC_QUERYCTRL(BASE+27)
id : 9963803
type : INTEGER
name : "Sharpness"
minimum : 1
maximum : 7
step : 1
default_value : 2
flags : unknown
VIDIOC_QUERYCTRL(BASE+28)
id : 9963804
type : INTEGER
name : "Backlight Compensation"
minimum : 0
maximum : 3
step : 1
default_value : 3
flags : unknown
