On Wed, 7 Mar 2012 09:59:28 +1100 Xavion <xavio...@gmail.com> wrote: > >> root@Desktop /etc/motion # tail /var/log/kernel.log > >> Mar 6 08:34:17 Desktop kernel: [ 7240.125167] gspca_main: ISOC > >> data error: [0] len=0, status=-18 > >> ... > > > > Hmm, error -18 is EXDEV, which according to > > Documentation/usb/error-codes.txt is: > > > > -EXDEV ISO transfer only partially completed > > (only set in iso_frame_desc[n].status, not > > urb->status) > > > > I've seen those before, and I think we should simply ignore them rather then > > log an error for them. Jean-Francois, what do you think? > > I'll let you guys decide what to do about this, but remember that I'm > here to help if you need more testing done. If you want my opinion, > I'd be leaning towards trying to prevent any errors that appear > regularly.
Hi, It seems that the webcams handled by the driver sn9c20x work the same as the ones handled by sonixj. In this last driver, I adjust the JPEG compression to avoid the errors "USB FIFO full", and I think that these errors also raise the URB error -18 with the sn9c20x. I will need some time to put a same code into the sn9c20x, then I'd be glad to have it tested. There was an other problem in the driver sonixj: the end of frame marker was not always at the right place. Xavion, as you have ms-windows, may you do some USB traces with this system? I need a capture sequence of about 15 seconds (not more) with big luminosity changes. > This isn't even the proper SXGA resolution, which is supposed to be > 1280x1024. The Sonix website claims that their SN9C201 webcam can > provide up to a 1.3 MP (SXGA) video size! Do you happen to know of > any inexpensive webcams that are capable of true SXGA in Linux? > > `--> lsusb | grep Cam > Bus 001 Device 006: ID 0c45:627b Microdia PC Camera (SN9C201 + OV7660) The sensor ov7660 can do VGA only (640x480). Otherwise, I uploaded a new gspca test version (2.15.3) with the JPEG compression control (default 80%). May you try it? -- Ken ar c'hentañ | ** Breizh ha Linux atav! ** Jef | http://moinejf.free.fr/ -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
