Thanks Paulo for your help Well, I try any sequence and didn't succeed I can not set the exposure on my Linux Box
Your work is great but sometimes, I fed up with fighting against compatibility hardware on my linux box On windows I just drag the slider of the exposure setting from 0 to 4, and it just works ! On linux I get with guvciew VIDIOC_S_CTRL - Unable to set control: Erreur d'entrée/sortie Exposure, Auto Priority change to 1 failed VIDIOC_G_CTRL - Unable to get control: Erreur d'entrée/sortie hardware get failed and with uvcdynctrl --get="Exposure, Auto Priority" ERROR: Unable to retrieve control value: A Video4Linux2 API call returned an unexpected error 5. (Code: 12) Tanks again for your help > Message du 02/11/09 10:42 > De : "Paulo Assis" > A : "Maxime Delorme" , "linux-uvc development discussions" > Copie à : > Objet : Re: [Linux-uvc-devel] Problems setting manual exposure on Creative > Live! Cam Optia > > > Hi, > > 2009/11/1 Maxime Delorme : > > > > When I check or unchecked in guvcview the checkbox I've got > > > > VIDIOC_S_CTRL - Unable to set control: Erreur d'entrée/sortie (Error I/O) > > Exposure, Auto Priority change to 1 failed > > VIDIOC_G_CTRL - Unable to get control: Erreur d'entrée/sortie (Error I/O) > > hardware get failed > > > > This is strange, have you tried to change it after modifying > "Exposure, Auto", try it with all possible combinations, > maybe it needs to be "unlocked" with some special control sequence??? > > Or maybe the control just doesn't work properly :( since even > VIDIOC_G_CTRL seems to fail. > In any case the default value is reported to be 0, although you can't > be sure what value is actually set. > If you say it works in windows then it would be a good idea to check > how this is handled there. > > Best regards, > Paulo > > ---------------------------------------------------------------------------- Laposte.net fête ses 10 ans ! Gratuite, garantie à vie et déjà utilisée par des millions d'internautes... vous aussi, pour votre adresse e-mail, choisissez laposte.net. Laposte.net, bien + qu'une messagerie ---------------------------------------------------------------------------- _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
