Ubuntu
linux package

device does not support capturing

Bug #273469 reported by spiderbatdad on 2008-09-23

This bug report is a duplicate of: Bug #260918: needed: libv4l and associated application patches (or "gspca stopped working in 2.6.27"). Edit Remove

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	linux (Ubuntu)	Incomplete	Undecided	Unassigned

Bug Description

Running the 2.6.25-5 kernel video capture is fine. With the 2.6.27-3-server, when I attempt to launch webcam, I get Device does not support capturing.

Revision history for this message

spiderbatdad (spiderbatdad) wrote on 2008-09-23:

Particularly, this occurs using gyachi, installed via synaptic package manager. It is the only webcam application I use, and still works fine if I boot into the earlier kernel.

Revision history for this message

Alan Pope 🍺🐧🐱 🦄 (popey) wrote on 2008-09-23:

What make and model of web cam is it? If it's built into the computer, what's the make and model of PC?

The output from the following command may also help, if you could paste it.

lsusb

Revision history for this message

spiderbatdad (spiderbatdad) wrote on 2008-09-23:

Hi. Thanks for replying. It is a basic quickcam. I have used for the past 4 years on Ubuntu distros. Perviously I said it still works fine with gyachi on the 2.6.25 kernel...I meant to write 2.6.26-5 kernel.

~$ lsusb
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 046d:0870 Logitech, Inc. QuickCam Express
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

The device works with camorama on the latest intrepid kernel 2.6.27-3 just not with the gyachi package available in synaptic. I assume it is a kernel issue, as one kernel has no issue and the other does.

Revision history for this message

spiderbatdad (spiderbatdad) wrote on 2008-09-23:

new linux image with updates today included 2.6.27.4. The problem persists. I have tried several boot options to no avail, and oddly boot options do not seem to affect whether the applications works in the earlier kernel...it just works.

I did notice this message during boot of the 2.6.27 kernel: "cannot open /dev/input/uinput....bad file descriptor..."

Depending on how interrupts are handled, via boot options, dmesg | tail might show:

ily="x25" sock_type="seqpacket" protocol=0 pid=6890 profile="/usr/sbin/cupsd"
[ 277.229202] ppdev0: registered pardevice
[ 277.260216] ppdev0: unregistered pardevice
[ 280.131271] ppdev0: registered pardevice
[ 280.170456] ppdev0: unregistered pardevice
[ 929.760933] quickcam: frame lost
[ 1082.883841] quickcam: frame lost

However this has no affect on how the cam performs in the 2.6.26 kernel.

Revision history for this message

spiderbatdad (spiderbatdad) wrote on 2008-09-23:

Found this in dmesg also:

[ 30.679325] quickcam: QuickCam USB camera found (driver version QuickCam USB 0.6.6 $Date: 2006/11/04 08:38:14 $)
[ 30.679439] quickcam: Kernel:2.6.27-4-server bus:2 class:FF subclass:FF vendor:046D product:0870
[ 30.679866] ACPI: Battery Slot [BAT0] (battery absent)
[ 30.696770] quickcam: Sensor HDCS-1020 detected
[ 30.699060] quickcam: Registered device: /dev/video0
[ 30.699208] usbcore: registered new interface driver quickcam

So...not sure why the gyachi package is failing to run the cam with this kernel. Maybe a missing lib related to imagemagick or libjasper-dev? No clue really. Don't know how to compare the way the application runs on each kernel.