Arch Linux

Xelinis

Member

Registered: 2008-05-28

Posts: 10

Webcam too dark

I have a Logitech webcam that works with Skype but the picture is way too dark to be useful.  Suggestions?

ThomasAdam

Member

From: Southampton, England

Registered: 2005-10-26

Posts: 147

Re: Webcam too dark

I have a Logitech webcam that works with Skype but the picture is way too dark to be useful.  Suggestions?

You're using the GSPCA module no doubt -- these webcams are *shit* under Linux -- just awful.  There's nothing you can do about the darkness in skype.  You might get better luck under kopete since that will allow you to change the contrast.  But that won't help you here, alas.

-- Thomas Adam

merlinux

Member

Registered: 2009-03-29

Posts: 5

Re: Webcam too dark

Hi!
I have the same problem with module gspca_main and gspca_spca561.
Seems that the problem is in these new kernel module that are different from the previous kernels (now i have 2.6.28-ARCH).
In the previous ones there was the possibility to set gamma blue red and green parameters directly from the module.
Now seems that there is no parameters available

[root@Geppo ~]# modinfo gspca_main
filename:       /lib/modules/2.6.28-ARCH/kernel/drivers/media/video/gspca/gspca_main.ko
license:        GPL
description:    GSPCA USB Camera Driver
author:         Jean-Francois Moine <http://moinejf.free.fr>
depends:        usbcore,videodev,compat_ioctl32
vermagic:       2.6.28-ARCH SMP preempt mod_unload
parm:           debug:Debug (bit) 0x01:error 0x02:probe 0x04:config 0x08:stream 0x10:frame 0x20:packet 0x40:USBin 0x80:USBout 0x0100: v4l2 (int)

[root@Geppo ~]# modinfo gspca_spca561
filename:       /lib/modules/2.6.28-ARCH/kernel/drivers/media/video/gspca/gspca_spca561.ko
license:        GPL
description:    GSPCA/SPCA561 USB Camera Driver
author:         Michel Xhaard <mxhaard@users.sourceforge.net>
alias:          usb:vABCDpCDEEd*dc*dsc*dp*ic*isc*ip*
alias:          usb:v10FDp7E50d*dc*dsc*dp*ic*isc*ip*
alias:          usb:v060BpA001d*dc*dsc*dp*ic*isc*ip*
alias:          usb:v04FCp0561d*dc*dsc*dp*ic*isc*ip*
alias:          usb:v046Dp092Fd*dc*dsc*dp*ic*isc*ip*
alias:          usb:v046Dp092Ed*dc*dsc*dp*ic*isc*ip*
alias:          usb:v046Dp092Dd*dc*dsc*dp*ic*isc*ip*
alias:          usb:v046Dp092Cd*dc*dsc*dp*ic*isc*ip*
alias:          usb:v046Dp092Bd*dc*dsc*dp*ic*isc*ip*
alias:          usb:v046Dp092Ad*dc*dsc*dp*ic*isc*ip*
alias:          usb:v046Dp0929d*dc*dsc*dp*ic*isc*ip*
alias:          usb:v046Dp0928d*dc*dsc*dp*ic*isc*ip*
alias:          usb:v0458p7004d*dc*dsc*dp*ic*isc*ip*
alias:          usb:v041Ep403Bd*dc*dsc*dp*ic*isc*ip*
alias:          usb:v041Ep401Ad*dc*dsc*dp*ic*isc*ip*
depends:        gspca_main,usbcore
vermagic:       2.6.28-ARCH SMP preempt mod_unload

An interesting forum can be this http://ubuntuforums.org/showthread.php?p=5988774

A possible solution could be come back to a previous kernel , because recompiling the same seems it is unuseful.
Anyone can suggest something else???

merlinux

Member

Registered: 2009-03-29

Posts: 5

Re: Webcam too dark

Hi!
Good news!!
It's possible to modify saturation and white balance using xawtv.
I have to lauch xawtv , modify the values , close xawtv and then open skype.
I'm working on a little code written in c available here https://bugs.launchpad.net/ubuntu/+sour … bug/287336.
V4lucp is still not working for me but i'm trying to solve the problem.

merlinux

Member

Registered: 2009-03-29

Posts: 5

Re: Webcam too dark

I have solved the problem with v4l2ucp.
Works great , but the only control has new driver are white balance and exposure.
Anyway are enough for to have a useful webcam.
I hope these infos can be useful for someone.

uastasi

Member

From: Salento - Italy

Registered: 2007-11-27

Posts: 247

Re: Webcam too dark

I have solved the problem with v4l2ucp.
Works great , but the only control has new driver are white balance and exposure.
Anyway are enough for to have a useful webcam.
I hope these infos can be useful for someone.

What's the right syntax to adjust those parameters? I have a m5602 based webcam with a similar problem.

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cthulhu

Member

Registered: 2012-04-26

Posts: 8

Re: Webcam too dark

Had the same problem with my old logitech webcam.
v4l2ucp was the solution for me too. Now it works good with Skype.

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fsckd

Forum Moderator

Registered: 2009-06-15

Posts: 3,077

Re: Webcam too dark

Welcome cthulhu. Please no necro-bumping: Forum Etiquette.
Closing.

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