After plugging the device into USB 2.0 socket (nVidia chip) syslog messages re-appeared:
[ 191.028275] retire_capture_urb: 29 callbacks suppressed [ 214.789697] retire_capture_urb: 2 callbacks suppressed [ 249.805552] retire_capture_urb: 11 callbacks suppressed [ 254.804116] retire_capture_urb: 21 callbacks suppressed [ 269.988701] retire_capture_urb: 3 callbacks suppressed [ 316.323057] retire_capture_urb: 11 callbacks suppressed [ 328.135311] retire_capture_urb: 11 callbacks suppressed [ 338.685139] retire_capture_urb: 15 callbacks suppressed
After plugging the device into USB 2.0 socket (nVidia chip) syslog messages re-appeared:
[ 191.028275] retire_capture_urb: 29 callbacks suppressed
[ 214.789697] retire_capture_urb: 2 callbacks suppressed
[ 249.805552] retire_capture_urb: 11 callbacks suppressed
[ 254.804116] retire_capture_urb: 21 callbacks suppressed
[ 269.988701] retire_capture_urb: 3 callbacks suppressed
[ 316.323057] retire_capture_urb: 11 callbacks suppressed
[ 328.135311] retire_capture_urb: 11 callbacks suppressed
[ 338.685139] retire_capture_urb: 15 callbacks suppressed