Messages in this thread | | | From | Laurent Pinchart <> | Subject | Re: [Linux-uvc-devel] 3.1.5: uvcvideo: Failed to resubmit video URB (-27). | Date | Tue, 3 Jan 2012 16:05:27 +0100 |
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Hi Justin,
(The linux-uvc-devel mailing list has been moved to SourceForge, I've CC'ed the new list)
On Tuesday 03 January 2012 15:21:02 Justin Piszcz wrote: > Hello, > > Using an Acer 7551-7442 here with the following built-in webcam: > Bus 002 Device 004: ID 0402:9665 ALi Corp. Gateway Webcam > > It seems motion locks up every day or so and I see this in the kernel logs: > [378982.724053] uvcvideo: Failed to resubmit video URB (-27). > [378982.724066] uvcvideo: Failed to resubmit video URB (-27). > [378982.724079] uvcvideo: Failed to resubmit video URB (-27). > [378982.724090] uvcvideo: Failed to resubmit video URB (-27). > [378982.724101] uvcvideo: Failed to resubmit video URB (-27). > [489148.723367] uvcvideo: Failed to resubmit video URB (-27). > [489148.723379] uvcvideo: Failed to resubmit video URB (-27). > [489148.723391] uvcvideo: Failed to resubmit video URB (-27). > [489148.723403] uvcvideo: Failed to resubmit video URB (-27). > [489148.723414] uvcvideo: Failed to resubmit video URB (-27). > > If I restart motion, it will usually start working again, I do not > have this problem on other (retail) Logitech webcams, was curious if > this a bug with the webcam (quirk?) or a problem in uvcvideo?
-27 is -EFBIG. As the uvcvideo driver set the ASAP isochronous scheduling flag when submitting URBs, this most probably results from a bug in the USB host controller hardware, from a bug in the USB host controller driver, or from a driver that blocks interrupts for several tens of milliseconds.
Which kernel version are you using ? An isochronous scheduling regression has been fixed recently between v3.2-rc3 and v3.2-rc5. You might want to try v3.2 when it will be released.
> The camera is built-into the laptop screen at the top in the middle. > > lsusb verbose: > > Bus 002 Device 004: ID 0402:9665 ALi Corp. Gateway Webcam > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 2.00 > bDeviceClass 239 Miscellaneous Device > bDeviceSubClass 2 ? > bDeviceProtocol 1 Interface Association > bMaxPacketSize0 64 > idVendor 0x0402 ALi Corp. > idProduct 0x9665 Gateway Webcam > bcdDevice 0.09 > iManufacturer 3 XPB3L1K44 > iProduct 1 1.3M WebCam > iSerial 0 > bNumConfigurations 1
Could you please send me the complete lsusb -v output for the device ? I'll then add it to the supported devices list.
-- Regards,
Laurent Pinchart
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