DMESG errors

Submitted by cwsutherland on #1

Hello,

I have a USB DVB device connected to a server side on a Rpi2.

It is connected to a Ubuntu 14.04 client, but generating lots of DMESG errors. This is even before a stream is started. Is it a bottleneck with the Pi or something else?

Regards

Craig

400.598634] usb 8-1: urb ffff8800d8f9a180 may be in a error, status 0
[ 400.598890] usb 8-1: urb ffff8800d8f9ad80 may be in a error, status 0
[ 400.599152] usb 8-1: urb ffff8800d8f9a0c0 may be in a error, status 0
[ 400.601111] usb 8-1: urb ffff8800d8f9ae40 may be in a error, status 0
[ 400.603002] usb 8-1: urb ffff8800d8f9ac00 may be in a error, status 0
[ 400.603263] usb 8-1: urb ffff8800d8f9a180 may be in a error, status 0
[ 400.603523] usb 8-1: urb ffff8800d8f9ad80 may be in a error, status 0
[ 400.603780] usb 8-1: urb ffff8800d8f9a0c0 may be in a error, status 0
[ 400.605077] usb 8-1: urb ffff8800d8f9ae40 may be in a error, status 0
[ 400.608905] vhci_hcd: dequeue a urb ffff8800d8f9ae40
[ 400.608918] vhci_hcd: device ffff8800d8fa4298 seems to be still connected
[ 400.610933] usb 8-1: urb ffff8800d8f9ae40 may be in a error, status 0
[ 400.610967] vhci_hcd: dequeue a urb ffff8800d8f9ac00
[ 400.610977] vhci_hcd: device ffff8800d8fa4298 seems to be still connected
[ 400.611089] vhci_hcd: unlink->seqnum 110501
[ 400.611098] vhci_hcd: the urb (seqnum 110501) was already given back
[ 400.611161] usb 8-1: urb ffff8800d8f9ac00 may be in a error, status 0
[ 400.611183] vhci_hcd: dequeue a urb ffff8800d8f9a180

Submitted by Michael on Fri, 2016/04/29 - 00:20

#2

Thats from the linux kernel, for some reason the usbip driver has lots of debugging messages...

I updated to 4.4.0-21, now the video application starts, runs for about 2 mins then freeze, and dmesg errors again. After some time they stop. Is there any other tunable parameter I can try?

cheers

Craig

Thanks for the information, it seems that the kernel interrupt messages have gone at 4.5.2, however the new kernel breaks the DVB app, making it unusable until a patch is released. It's never easy!