what type of webcam is it and what driver does it use?

Yes, sorry for the lack of details.

I use this driver : http://syntekdriver.sourceforge.net/

$lspci
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 03)
00:01.0 PCI bridge: Intel Corporation Mobile PM965/GM965/GL960 PCI Express Root Port (rev 03)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Contoller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3 (rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4 (rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 (rev 03)
00:1c.5 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 6 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller (rev 03)
01:00.0 VGA compatible controller: nVidia Corporation GeForce 8600M GS (rev a1)
02:00.0 Ethernet controller: Attansic Technology Corp. L1 Gigabit Ethernet Adapter (rev b0)
03:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN Network Connection (rev 61)
05:00.0 Memory controller: Intel Corporation Turbo Memory Controller (rev 01)
09:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
09:01.1 Generic system peripheral [0805]: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
09:01.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12)
09:01.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
09:01.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 12)

Same problem here. I think the webcam's the same too, the one integrated in the first Asus A6JM series:

lsusb
Bus 005 Device 003: ID 174f:a311

I use the syntek driver (stk11xx), v4l1-compat and v4l2-common. It works fine with camorama, ekiga and vlc, but flikers A LOT (i.e., you can't possibly use it) on kopete.

Please give advice...

Find a USB version of the same camera and donate it to the project - then it will get support in every KDE 4 app via solid.

I have the same webcam version and it works fine with recent stk11xx driver (revision 57) and recent svn Kopete version for KDE 3.5. I think that at least Kopete in KDE 3.5.8 should work. I remember that it did flicker with older version of stk11xx driver.

NB Asus A6Jc
Bus 001 Device 003: ID 174f:a311
Kernel 2.6.23

With Kopete in KDE 3.5.8, when you open "device" in configuration, Kopete totally crashes...

Please send us a backtrace of the crash. Thanks

I reported it recently : http://bugs.kde.org/show_bug.cgi?id=151292

Btw. do you have recent stk11xx driver?

Yes, I downloaded it from sourceforge during september or october (and the last 1.1.0 is out from September 1st).

http://sourceforge.net/project/showfiles.php?group_id=178178

I used this doc : http://doc.ubuntu-fr.org/syntek

You should try the trunk version of stk11xx driver (revision 57) because it has some fixes for Kopete.

Here's the last stk11xx commit log:
Revision 57:
Add 174F:6A33 and 174F:6A54 support.
Some correction to add Kopete application support.

I just tried to install from the svn, but the problem is exactly the same with kopete :( (same stack trace)

I looked at the stack trace and it looks like Kopete cannot allocate memory. And if I didn't overlook something than it will try allocate max 600kB.

So if you have enough free memory then I think that your system could be broken :(

It worked with kde 3.5.7 (but flickered), but since kde 3.5.8, it crashes in config' menu (for several people, I saw on french forums).

Can you compile Kopete with debug enabled and post the log from console before Kopete crashes? Thanks

Thank you Roman Jarosz for your help and your fixe (on jabber), the problem is fixed with the patch you made :)

The patch is in svn commit 732161.

Thank you very much, Roman. I just tried the patch and now everything works fine. Can't believe it's been so fast.