Hello,

I'm having an odd problem with uvcvideo and the HP webcam on my HP
Pavilion dv5 (dv5-1125nr).  If I boot with the Fedora 10 (both 686 and
x86_64) live cd and start cheese it works great. The little light goes
on and I can see my face very clearly. If I install the x86_64 version
from the live CD on the HD and boot from the HD the webcam no longer
works.

Now on the x86-64 live CD if I rmmod uvcvideo and then modprobe it
again, the camera stops working and I get a similar error to the one I
get when I boot from the HD in /var/log/messages:

Nov 26 00:42:58 localhost kernel: uvcvideo: Failed to query (135) UVC
control 2 (unit 2) : -110 (exp. 2).

(Every time I start cheese. I get the same message. )

Note that I can also use the webcam with ekiga and the Mandriva live
CD although I didn't try screwing around with rmmod there.

Uname -a on the Fedora system produces this.
Linux ovelix 2.6.27.5-117.fc10.x86_64 #1 SMP Tue Nov 18 11:58:53 EST
2008 x86_64 x86_64 x86_64 GNU/Linux

I did try downloading uvcvideo-283b73ee3b3a.tar.bz2 and then make,
make install.  I still got the same results.

Can someone give me ideas on how to debug this further?

Thanks in advance,

Sopho

PS.

When I actually do lsusb on the device, on occasion the output pauses
and also displays some lines like the following:

can't get device qualifier: Connection timed out
can't get debug descriptor: Connection timed out
cannot read device status, Connection timed out (110)

When it works, lsusb produces the following (Yes I do see a number of
"14 Video" lines):

[ovelix ~]$ lsusb -v -d 5986:0137

Bus 001 Device 002: ID 5986:0137 Acer, Inc
Device Descriptor:
 bLength                18
 bDescriptorType         1
 bcdUSB               2.00
 bDeviceClass          239 Miscellaneous Device
 bDeviceSubClass         2 ?
 bDeviceProtocol         1 Interface Association
 bMaxPacketSize0        64
 idVendor           0x5986 Acer, Inc
 idProduct          0x0137
 bcdDevice            0.05
 iManufacturer           1
 iProduct                2
 iSerial                 0
 bNumConfigurations      1
 Configuration Descriptor:
   bLength                 9
   bDescriptorType         2
   wTotalLength          439
   bNumInterfaces          2
   bConfigurationValue     1
   iConfiguration          0
   bmAttributes         0x80
     (Bus Powered)
   MaxPower              500mA
   Interface Association:
     bLength                 8
     bDescriptorType        11
     bFirstInterface         0
     bInterfaceCount         2
     bFunctionClass         14 Video
     bFunctionSubClass       3 Video Interface Collection
     bFunctionProtocol       0
     iFunction               2
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        0
     bAlternateSetting       0
     bNumEndpoints           1
     bInterfaceClass        14 Video
     bInterfaceSubClass      1 Video Control
     bInterfaceProtocol      0
     iInterface              2
     VideoControl Interface Descriptor:
       bLength                13
       bDescriptorType        36
       bDescriptorSubtype      1 (HEADER)
       bcdUVC               1.00
       wTotalLength           79
       dwClockFrequency       24.000000MHz
       bInCollection           1
       baInterfaceNr( 0)       1
     VideoControl Interface Descriptor:
       bLength                18
       bDescriptorType        36
       bDescriptorSubtype      2 (INPUT_TERMINAL)
       bTerminalID             1
       wTerminalType      0x0201 Camera Sensor
       bAssocTerminal          0
       iTerminal               0
       wObjectiveFocalLengthMin      0
       wObjectiveFocalLengthMax      0
       wOcularFocalLength            0
       bControlSize                  3
       bmControls           0x00040002
         Auto-Exposure Mode
         Privacy
     VideoControl Interface Descriptor:
       bLength                11
       bDescriptorType        36
       bDescriptorSubtype      5 (PROCESSING_UNIT)
     Warning: Descriptor too short
       bUnitID                 2
       bSourceID               1
       wMaxMultiplier          0
       bControlSize            2
       bmControls     0x0000043f
         Brightness
         Contrast
         Hue
         Saturation
         Sharpness
         Gamma
         Power Line Frequency
       iProcessing             0
       bmVideoStandards     0x 9
         None
         SECAM - 625/50
     VideoControl Interface Descriptor:
       bLength                 9
       bDescriptorType        36
       bDescriptorSubtype      3 (OUTPUT_TERMINAL)
       bTerminalID             3
       wTerminalType      0x0101 USB Streaming
       bAssocTerminal          0
       bSourceID               2
       iTerminal               0
     VideoControl Interface Descriptor:
       bLength                28
       bDescriptorType        36
       bDescriptorSubtype      6 (EXTENSION_UNIT)
       bUnitID                 4
       guidExtensionCode         {5dc717a9-1941-da11-ae0e-000d56ac7b4c}
       bNumControl            14
       bNrPins                 1
       baSourceID( 0)          1
       bControlSize            3
       bmControls( 0)       0xf9
       bmControls( 1)       0x1f
       bmControls( 2)       0x80
       iExtension              0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x81  EP 1 IN
       bmAttributes            3
         Transfer Type            Interrupt
         Synch Type               None
         Usage Type               Data
       wMaxPacketSize     0x000a  1x 10 bytes
       bInterval               5
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        1
     bAlternateSetting       0
     bNumEndpoints           0
     bInterfaceClass        14 Video
     bInterfaceSubClass      2 Video Streaming
     bInterfaceProtocol      0
     iInterface              0
     VideoStreaming Interface Descriptor:
       bLength                            14
       bDescriptorType                    36
       bDescriptorSubtype                  1 (INPUT_HEADER)
       bNumFormats                        1
       wTotalLength                      201
       bEndPointAddress                  130
       bmInfo                              0
       bTerminalLink                       3
       bStillCaptureMethod                 0
       bTriggerSupport                     1
       bTriggerUsage                       1
       bControlSize                        1
       bmaControls( 0)                    27
     VideoStreaming Interface Descriptor:
       bLength                            27
       bDescriptorType                    36
       bDescriptorSubtype                  4 (FORMAT_UNCOMPRESSED)
       bFormatIndex                        1
       bNumFrameDescriptors                5
       guidFormat
{59555932-0000-1000-8000-00aa00389b71}
       bBitsPerPixel                      16
       bDefaultFrameIndex                  1
       bAspectRatioX                       0
       bAspectRatioY                       0
       bmInterlaceFlags                 0x00
         Interlaced stream or variable: No
         Fields per frame: 1 fields
         Field 1 first: No
         Field pattern: Field 1 only
         bCopyProtect                      0
     VideoStreaming Interface Descriptor:
       bLength                            34
       bDescriptorType                    36
       bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
       bFrameIndex                         1
       bmCapabilities                   0x00
         Still image unsupported
       wWidth                            640
       wHeight                           480
       dwMinBitRate                 73728000
       dwMaxBitRate                147456000
       dwMaxVideoFrameBufferSize      614400
       dwDefaultFrameInterval         333333
       bFrameIntervalType                  2
       dwFrameInterval( 0)            333333
       dwFrameInterval( 1)            666667
     VideoStreaming Interface Descriptor:
       bLength                            30
       bDescriptorType                    36
       bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
       bFrameIndex                         2
       bmCapabilities                   0x00
         Still image unsupported
       wWidth                            352
       wHeight                           288
       dwMinBitRate                 48660480
       dwMaxBitRate                 48660480
       dwMaxVideoFrameBufferSize      202752
       dwDefaultFrameInterval         333333
       bFrameIntervalType                  1
       dwFrameInterval( 0)            333333
     VideoStreaming Interface Descriptor:
       bLength                            30
       bDescriptorType                    36
       bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
       bFrameIndex                         3
       bmCapabilities                   0x00
         Still image unsupported
       wWidth                            320
       wHeight                           240
       dwMinBitRate                 36864000
       dwMaxBitRate                 36864000
       dwMaxVideoFrameBufferSize      153600
       dwDefaultFrameInterval         333333
       bFrameIntervalType                  1
       dwFrameInterval( 0)            333333
     VideoStreaming Interface Descriptor:
       bLength                            30
       bDescriptorType                    36
       bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
       bFrameIndex                         4
       bmCapabilities                   0x00
         Still image unsupported
       wWidth                            176
       wHeight                           144
       dwMinBitRate                 12165120
       dwMaxBitRate                 12165120
       dwMaxVideoFrameBufferSize       50688
       dwDefaultFrameInterval         333333
       bFrameIntervalType                  1
       dwFrameInterval( 0)            333333
     VideoStreaming Interface Descriptor:
       bLength                            30
       bDescriptorType                    36
       bDescriptorSubtype                  5 (FRAME_UNCOMPRESSED)
       bFrameIndex                         5
       bmCapabilities                   0x00
         Still image unsupported
       wWidth                            160
       wHeight                           120
       dwMinBitRate                  9216000
       dwMaxBitRate                  9216000
       dwMaxVideoFrameBufferSize       38400
       dwDefaultFrameInterval         333333
       bFrameIntervalType                  1
       dwFrameInterval( 0)            333333
     VideoStreaming Interface Descriptor:
       bLength                             6
       bDescriptorType                    36
       bDescriptorSubtype                 13 (COLORFORMAT)
       bColorPrimaries                     0 (Unspecified)
       bTransferCharacteristics            0 (Unspecified)
       bMatrixCoefficients                 0 (Unspecified)
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        1
     bAlternateSetting       1
     bNumEndpoints           1
     bInterfaceClass        14 Video
     bInterfaceSubClass      2 Video Streaming
     bInterfaceProtocol      0
     iInterface              0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x82  EP 2 IN
       bmAttributes            5
         Transfer Type            Isochronous
         Synch Type               Asynchronous
         Usage Type               Data
       wMaxPacketSize     0x0080  1x 128 bytes
       bInterval               1
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        1
     bAlternateSetting       2
     bNumEndpoints           1
     bInterfaceClass        14 Video
     bInterfaceSubClass      2 Video Streaming
     bInterfaceProtocol      0
     iInterface              0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x82  EP 2 IN
       bmAttributes            5
         Transfer Type            Isochronous
         Synch Type               Asynchronous
         Usage Type               Data
       wMaxPacketSize     0x0200  1x 512 bytes
       bInterval               1
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        1
     bAlternateSetting       3
     bNumEndpoints           1
     bInterfaceClass        14 Video
     bInterfaceSubClass      2 Video Streaming
     bInterfaceProtocol      0
     iInterface              0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x82  EP 2 IN
       bmAttributes            5
         Transfer Type            Isochronous
         Synch Type               Asynchronous
         Usage Type               Data
       wMaxPacketSize     0x0400  1x 1024 bytes
       bInterval               1
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        1
     bAlternateSetting       4
     bNumEndpoints           1
     bInterfaceClass        14 Video
     bInterfaceSubClass      2 Video Streaming
     bInterfaceProtocol      0
     iInterface              0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x82  EP 2 IN
       bmAttributes            5
         Transfer Type            Isochronous
         Synch Type               Asynchronous
         Usage Type               Data
       wMaxPacketSize     0x0b00  2x 768 bytes
       bInterval               1
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        1
     bAlternateSetting       5
     bNumEndpoints           1
     bInterfaceClass        14 Video
     bInterfaceSubClass      2 Video Streaming
     bInterfaceProtocol      0
     iInterface              0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x82  EP 2 IN
       bmAttributes            5
         Transfer Type            Isochronous
         Synch Type               Asynchronous
         Usage Type               Data
       wMaxPacketSize     0x0c00  2x 1024 bytes
       bInterval               1
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        1
     bAlternateSetting       6
     bNumEndpoints           1
     bInterfaceClass        14 Video
     bInterfaceSubClass      2 Video Streaming
     bInterfaceProtocol      0
     iInterface              0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x82  EP 2 IN
       bmAttributes            5
         Transfer Type            Isochronous
         Synch Type               Asynchronous
         Usage Type               Data
       wMaxPacketSize     0x1380  3x 896 bytes
       bInterval               1
   Interface Descriptor:
     bLength                 9
     bDescriptorType         4
     bInterfaceNumber        1
     bAlternateSetting       7
     bNumEndpoints           1
     bInterfaceClass        14 Video
     bInterfaceSubClass      2 Video Streaming
     bInterfaceProtocol      0
     iInterface              0
     Endpoint Descriptor:
       bLength                 7
       bDescriptorType         5
       bEndpointAddress     0x82  EP 2 IN
       bmAttributes            5
         Transfer Type            Isochronous
         Synch Type               Asynchronous
         Usage Type               Data
       wMaxPacketSize     0x1400  3x 1024 bytes
       bInterval               1
can't get device qualifier: Operation not permitted
can't get debug descriptor: Operation not permitted
cannot read device status, Operation not permitted (1)
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