On Fri, Mar 26, 2010 at 3:10 PM, Akemi Yagi <amyagi at gmail.com> wrote: > On Fri, Mar 26, 2010 at 11:53 AM, Boris Epstein <borepstein at gmail.com> wrote: >> Hi all, >> >> I've got a CentOS 5.4 box and am trying to use it to control either >> of the two old cameras we've got, one being Nikon Coolpix 990 and the >> other Nikon Coolpix 995. Accessing either I get the following message: >> >> ---------------------------------------------------- >> *** Error *** >> An error occurred in the io-library ('Could not claim the USB >> device'): Could not claim interface 0 (Operation not permitted). Make >> sure no other program or kernel module (such as sdc2xx, stv680, >> spca50x) is using the device and you have read/write access to the >> device. >> ERROR: Could not capture. >> *** Error (-53: 'Could not claim the USB device') *** >> ---------------------------------------------------- >> >> Any idea what this could be about? >> >> By the way, about a year ago I did manage to use a Linux machine to >> control one of these cameras (the 990, I believe). > > Is the camera set to the PTP mode? Try running 'tail -f > /var/log/messages' while connecting the camera and see how it is being > recognized. > > Akemi > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > Thanks. Just disconnected and reconnected the camera again, got the following: ------------------------------------------ Mar 26 15:23:51 antwerp kernel: usb 2-1: USB disconnect, address 2 Mar 26 15:23:55 antwerp kernel: usb 2-1: new full speed USB device using uhci_hcd and address 3 Mar 26 15:23:55 antwerp kernel: usb 2-1: configuration #1 chosen from 1 choice ------------------------------------------ Looks like the camera is being recognized at least to some degree: [antwerp at bepstein][~/scratch] lsusb Bus 001 Device 001: ID 0000:0000 Bus 002 Device 003: ID 04b0:0102 Nikon Corp. Coolpix 990 Bus 002 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 Bus 004 Device 001: ID 0000:0000 [antwerp at bepstein][~/scratch] Boris.