Comment 2 for bug 683118

Same issue with latest kernel 2.6.37-8-generic #21-Ubuntu

  300.913731] tda18271: performing RF tracking filter calibration
[ 304.564373] tda18271: RF tracking filter calibration complete
[ 1838.173365] af9015: recv bulk message failed:-71
[ 1838.175704] tda18271_read_regs: [11-00c0|M] ERROR: i2c_transfer returned: -1
[ 4282.966962] af9015: recv bulk message failed:-71
[ 4282.969340] tda18271_read_regs: [11-00c0|M] ERROR: i2c_transfer returned: -1
[ 4282.969348] tda18271_ir_cal_init: [11-00c0|M] error -1 on line 811
[ 4282.969351] tda18271_init: [11-00c0|M] error -1 on line 835
[ 4282.969354] tda18271_tune: [11-00c0|M] error -1 on line 908
[ 4282.969358] tda18271_set_params: [11-00c0|M] error -1 on line 989
[ 5508.876997] af9015: recv bulk message failed:-71
[ 5508.879387] tda18271_read_regs: [11-00c0|M] ERROR: i2c_transfer returned: -1
[ 5508.879395] tda18271_ir_cal_init: [11-00c0|M] error -1 on line 811
[ 5508.879399] tda18271_init: [11-00c0|M] error -1 on line 835
[ 5508.879402] tda18271_tune: [11-00c0|M] error -1 on line 908
[ 5508.879405] tda18271_set_params: [11-00c0|M] error -1 on line 989
[ 5522.255867] af9015: recv bulk message failed:-71
[ 5522.258244] tda18271_read_regs: [11-00c0|M] ERROR: i2c_transfer returned: -1
[ 5522.258252] tda18271_ir_cal_init: [11-00c0|M] error -1 on line 811
[ 5522.258255] tda18271_init: [11-00c0|M] error -1 on line 835
[ 5522.258258] tda18271_tune: [11-00c0|M] error -1 on line 908
[ 5522.258261] tda18271_set_params: [11-00c0|M] error -1 on line 989
[ 6534.097212] af9015: recv bulk message failed:-71
[ 6534.097229] af9015: af9015_rc_query: failed:-1
[ 6534.097232] dvb-usb: error -1 while querying for an remote control event.

lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/10p, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/10p, 480M
    |__ Port 3: Dev 2, If 0, Class=vend., Driver=dvb_usb_gl861, 480M
    |__ Port 3: Dev 2, If 1, Class=HID, Driver=usbhid, 480M
    |__ Port 5: Dev 3, If 0, Class=vend., Driver=dvb_usb_af9015, 480M
    |__ Port 5: Dev 3, If 1, Class=HID, Driver=usbhid, 480M
    |__ Port 8: Dev 4, If 0, Class=vend., Driver=dvb_usb_af9015, 480M
    |__ Port 8: Dev 4, If 1, Class=HID, Driver=usbhid, 480M

T: Bus=01 Lev=01 Prnt=01 Port=02 Cnt=01 Dev#= 2 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=0db0 ProdID=5581 Rev=01.02
S: Manufacturer=PC-DTV Receiver
S: Product=PC-DTV Receiver
S: SerialNumber=00000001
C: #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=dvb_usb_gl861
I: If#= 1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=01 Driver=usbhid

T: Bus=01 Lev=01 Prnt=01 Port=04 Cnt=02 Dev#= 3 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=15a4 ProdID=9016 Rev=02.00
S: Manufacturer=Afatech
S: Product=DVB-T 2
S: SerialNumber=010101010600001
C: #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 4 Cls=ff(vend.) Sub=00 Prot=00 Driver=dvb_usb_af9015
I: If#= 1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=01 Driver=usbhid

T: Bus=01 Lev=01 Prnt=01 Port=07 Cnt=03 Dev#= 4 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=0413 ProdID=6029 Rev=02.00
S: Manufacturer=Leadtek
S: Product=WinFast DTV Dongle Gold
C: #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 4 Cls=ff(vend.) Sub=00 Prot=00 Driver=dvb_usb_af9015
I: If#= 1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=01 Driver=usbhid

You may mark older report https://bugs.launchpad.net/bugs/680794 as dublicate to this.