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I get different errors based upon the port into which the Logitech C270 HD is plugged. The camera performs when in use but my computer does have some occasional freezes ...
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  1. #1
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    Logitech webcam dmesg errors


    I get different errors based upon the port into which the Logitech C270 HD is plugged. The camera performs when in use but my computer does have some occasional freezes that seem to be resolved when unplugging. Anyone have some insight into what is going on here?

    When plugged into standard USB port:

    Jun 29 12:04:05 173-24-63-115 mtp-probe: bus: 1, device: 9 was not an MTP device
    Jun 29 12:04:05 173-24-63-115 kernel: [40998.224011] ALSA sound/usb/mixer.c:810 set resolution quirk: cval->res = 384
    Jun 29 12:04:05 173-24-63-115 kernel: [40998.242095] ALSA sound/usb/clock.c:242 current rate 16777215 is different from the runtime rate 48000
    Jun 29 12:04:05 173-24-63-115 kernel: [40998.251698] ALSA sound/usb/clock.c:242 current rate 16777215 is different from the runtime rate 48000
    Jun 29 12:04:05 173-24-63-115 rtkit-daemon[1051]: Successfully made thread 7945 of process 1050 (/usr/bin/pulseaudio (deleted)) owned by '1000' RT at priority 5.
    Jun 29 12:04:10 173-24-63-115 kernel: [41003.975404] ALSA sound/usb/clock.c:242 current rate 16777215 is different from the runtime rate 48000
    Jun 29 12:04:11 173-24-63-115 kernel: [41004.009983] ALSA sound/usb/clock.c:242 current rate 16777215 is different from the runtime rate 48000
    Jun 29 12:04:13 173-24-63-115 kernel: [41006.499123] ALSA sound/usb/clock.c:242 current rate 4842832 is different from the runtime rate 48000
    Jun 29 12:04:13 173-24-63-115 kernel: [41006.539321] ALSA sound/usb/clock.c:242 current rate 16777215 is different from the runtime rate 48000
    Jun 29 12:04:13 173-24-63-115 kernel: [41006.574596] ALSA sound/usb/clock.c:242 current rate 16777215 is different from the runtime rate 48000



    When plugged into USB 3.0:


    Jun 29 12:04:43 173-24-63-115 kernel: [41036.356811] usb 3-4: new high-speed USB device number 3 using xhci_hcd
    Jun 29 12:04:43 173-24-63-115 kernel: [41036.623920] usb 3-4: New USB device found, idVendor=046d, idProduct=081d
    Jun 29 12:04:43 173-24-63-115 kernel: [41036.623924] usb 3-4: New USB device strings: Mfr=0, Product=0, SerialNumber=1
    Jun 29 12:04:43 173-24-63-115 kernel: [41036.623927] usb 3-4: SerialNumber: 836A27D0
    Jun 29 12:04:43 173-24-63-115 kernel: [41036.871795] ALSA sound/usb/mixer.c:846 5:0: cannot get min/max values for control 2 (id 5)
    Jun 29 12:04:43 173-24-63-115 kernel: [41036.872379] uvcvideo: Found UVC 1.00 device <unnamed> (046d:081d)
    Jun 29 12:04:43 173-24-63-115 kernel: [41036.885091] input: UVC Camera (046d:081d) as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4:1.2/input/input22
    Jun 29 12:04:43 173-24-63-115 mtp-probe: checking bus 3, device 3: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-4"
    Jun 29 12:04:43 173-24-63-115 mtp-probe: bus: 3, device: 3 was not an MTP device
    Jun 29 12:04:44 173-24-63-115 kernel: [41036.915030] ALSA sound/usb/mixer.c:810 set resolution quirk: cval->res = 384
    Jun 29 12:04:44 173-24-63-115 rtkit-daemon[1051]: Successfully made thread 7989 of process 1050 (/usr/bin/pulseaudio (deleted)) owned by '1000' RT at priority 5.
    Jun 29 12:04:51 173-24-63-115 kernel: [41044.475573] xhci_hcd 0000:00:14.0: WARN Event TRB for slot 2 ep 0 with no TDs queued?

    Update:
    Switching from 081d Analog mono input (webcam) to Internal Audio in the Hardware tab of the gnome sound settings panel seems to have staunched to flow of errors while plugged into a standard usb port.

    Update: The previous update was just crazy-talk as the errors resumes when I closed the sound panel it seems.
    Last edited by nimbus9; 06-29-2012 at 07:58 PM.

  2. #2
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    Also a correction - this is a Logitech Webcam C310

    lsusb identifies the device as simply: Bus 003 Device 003: ID
    046d:081d Logitech, Inc.

    In both types of USB ports I get the following message:
    nimbus@173-24-63-115 ~$ lsusb -d 046d:081d -v | grep "14 Video"
    Couldn't open device, some information will be missing
    bFunctionClass 14 Video
    bInterfaceClass 14 Video
    bInterfaceClass 14 Video
    bInterfaceClass 14 Video
    bInterfaceClass 14 Video
    bInterfaceClass 14 Video
    bInterfaceClass 14 Video
    bInterfaceClass 14 Video
    bInterfaceClass 14 Video
    bInterfaceClass 14 Video
    bInterfaceClass 14 Video
    bInterfaceClass 14 Video
    bInterfaceClass 14 Video
    bInterfaceClass 14 Video


    The camera seems to work, however there are some intermittent computer
    freezes. Let me know if more information is needed. I am using a
    GIGABYTE GA-Z77MX-D3H LGA 1155 Intel Z77 HDMI SATA 6Gb/s USB 3.0 Micro
    ATX Intel Motherboard and Linux 3.4.4-3.fc17.x86_64 #1 SMP Tue Jun 26
    20:54:56 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

  3. #3
    Linux Guru Rubberman's Avatar
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    I have not been happy trying to use Logitech video gear on Linux. There seems to be too much of this sort of problem that you have encountered. I have been using an iMage USB 2.0 camera that my wife got for her MacBook Pro, and decided she didn't want. I installed the drivers from http://mxhaard.free.fr/spca5xx.html and it has been working flawlessly on both CentOS 5.x and now Scientific Linux 6.x (both RHEL clones) for several years. In any case, check out the web site mentioned above - they have linux drivers for most every webcam out there.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

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