Problems with af9013/5: I2C read failed reg:d417, bulk message failed:-22

Hello,

I am having problems with my DIGITTRADE DVB-T USB Stick with af9015 chipset
since a few weeks. It works for a while (sometimes about 3 minutes, sometimes
half an hour) but suddenly the video stream freezes and dmesg says:

> [  155.924040] usb 1-6: new high speed USB device using ehci_hcd and address 4
> [  156.091151] usb 1-6: configuration #1 chosen from 1 choice
> [  156.096560] Afatech DVB-T: Fixing fullspeed to highspeed interval: 16 -> 8
> [  156.096985] input: Afatech DVB-T as /devices/pci0000:00/0000:00:10.3/usb1/1-6/1-6:1.1/input/input7
> [  156.138858] generic-usb 0003:15A4:9016.0002: input,hidraw1: USB HID v1.01 Keyboard [Afatech DVB-T] on usb-0000:00:10.3-6/input1
> [  156.262580] dvb-usb: found a 'Afatech AF9015 DVB-T USB2.0 stick' in cold state, will try to load a firmware
> [  156.262591] usb 1-6: firmware: requesting dvb-usb-af9015.fw
> [  156.313938] dvb-usb: downloading firmware from file 'dvb-usb-af9015.fw'
> [  156.382340] dvb-usb: found a 'Afatech AF9015 DVB-T USB2.0 stick' in warm state.
> [  156.382441] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
> [  156.382984] DVB: registering new adapter (Afatech AF9015 DVB-T USB2.0 stick)
> [  156.906560] af9013: firmware version:4.95.0
> [  156.911056] DVB: registering adapter 0 frontend 0 (Afatech AF9013 DVB-T)...
> [  156.995283] MT2060: successfully identified (IF1 = 1220)
> [  157.471840] dvb-usb: Afatech AF9015 DVB-T USB2.0 stick successfully initialized and connected.
> [  157.551768] usbcore: registered new interface driver dvb_usb_af9015
> [  239.765547] usb 1-6: USB disconnect, address 4
> [  239.769954] af9015: bulk message failed:-22 (8/-224805168)
> [  239.769961] af9013: I2C read failed reg:d417
> [  239.769965] af9015: bulk message failed:-22 (8/-1067461161)
> [  239.769968] af9013: I2C read failed reg:d417
> [  239.769971] af9015: bulk message failed:-22 (9/54295)
> [  239.769973] mt2060 I2C write failed
> [  239.769975] af9015: bulk message failed:-22 (8/134)
> [  239.769977] af9013: I2C read failed reg:d417
> [  239.769980] af9015: bulk message failed:-22 (8/15)
> [  239.769982] af9013: I2C read failed reg:d417
> [  239.769986] af9015: bulk message failed:-22 (8/-1065361500)
> [  239.769988] af9013: I2C read failed reg:d730

I am not even able to rmmod the dvb_usb_af9015 driver, the process hangs.

I already tried a more recent firmware and driver, so I am now working with
firmware v4.95.0 and changeset 71dec186cdae of the v4l-dvb repository. My
system is running on a 2.6.28-15-generic #49-Ubuntu SMP kernel.

What do these error messages mean? What meaning do the numbers have? Could it
be that my hardware is broken? It has now been working for over a year now
without major problems (and even better than on Windows, thanks to v4l-dvb ;-))

Thanks in advantage,
Roland Hieber








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