problem setting gamma and gain new gspca

[micheleo]

Hi guys!

I have this problem setting the gamma and gain parameters for the new gspca module:

with 8.04 everything went right, thanks also to this guide for the dark image problem: http://forum.skype.com/index.php?showtopic=106357

after upgrading to 8.10 the image of my webcam ( 046d:092f Logitech, Inc. QuickCam Express Plus ) is again very dark and the previous guide does not work anymore.

some notes:
/sys/modules/gspca does not exist anymore, in its place I find /sys/module/gspca_spca561/ and /sys/module/gspca_main/ and in these directories I can't do the thing suggested in the guide ( setting the parameters ) because it seems like I don't have write permission on it even if I am root:

 /sys/module/gspca_main/parameters/GGreen: No such file or directory

is it mounted readonly now?

if I try to add the options in /etc/modprobe.d/options at modprobing ( I tried on both gspca_main and gspca_spca561 ) it complains that these options are not valid.

any clue?

Thank you guys!

Michele

[otc242]

have you tried "autoexpo" module option?

p.s. worst case scenario - you can set any option (override default value) directly in source file of module.

[micheleo]

have you tried "autoexpo" module option?

p.s. worst case scenario - you can set any option (override default value) directly in source file of module.

thanks for replying!

unfortunately I get the same:

 gspca_main: Unknown parameter `autoexpo'

and compiling is not possible because there's an open bug that prevents to do it as far as I know:
https://bugs.launchpad.net/ubuntu/+s...ca/+bug/273727

any suggestion?

[otc242]

looks like gspca is now part of the kernel and that could be the reason of these problems - so, compiling is not needed. from what i've read, it should work properly with latest versions (and of course with final version of 8.10).

anyway, back to problem - try this:

modinfo -F parm gspca

that should give all available module parameters and their description - maybe they are renamed now?

[micheleo]

thanks again for replying.

michele@micheleo:~$ modinfo -F parm gspca_main
debug:Debug (bit) 0x01:error 0x02:probe 0x04:config 0x08:stream 0x10:frame 0x20:packet 0x40:USBin 0x80:USBout 0x0100: v4l2

gspca_spc561 does not return anything.

[otc242]

gspca_main? this is what i get (on hardy, still hadn't had time to get intrepid):

modinfo -F parm gspca

force_sensor_id:Forced assigning ID sensor (Zc03xx only). Dangerous, only for experts !!!
force_gamma_id:Forced assigning ID of contrast settings (0=default,1,2,3) Zc03xx only
lightfreq:Light frequency banding filter. Set to 50 or 60 Hz, or 0 for NoFlicker (default=50) Zc03xx only
usbgrabber:Is a usb grabber 0x0733:0x0430 ? (default 1) 
compress:Turn on/off compression (not functional yet)
GGreen:Gain Green setting range 0 to 512 /256 
GBlue:Gain Blue setting range 0 to 512 /256 
GRed:Gain Red setting range 0 to 512 /256 
OffGreen:OffGreen setting range -128 to 128
OffBlue:OffBlue setting range -128 to 128
OffRed:OffRed setting range -128 to 128
gamma:gamma setting range 0 to 7 3-> gamma=1
force_rgb:Read RGB instead of BGR
debug:Debug level: 0=none, 1=init/detection, 2=warning, 3=config/control, 4=function call, 5=max
autoexpo:Enable/Disable auto exposure (default=1: enabled) (PC-CAM 600/Zc03xx/spca561a/Etoms Only !!!)

i hope this is only a "beta" related thing and that it will be resolved until final release

[micheleo]

yes, I really hope it!
thank you very much for your kind help!
see you!

[otc242]

you're very welcome

i think it will all work well in final version - if not, i'll have the same problem and we'll be on this thread again until we find a fix

[tyk]

same problem here on intrepid. webcam is a logitech something or the other.. image was fine on hardy.
cheers.

[otc242]

mine is logitech too: quickcam for notebooks, new version (hardware id via lsusb is 046d:08dd)