RTL2832U on Raspberry Pi

IZ8MBW Fabio iz8mbw at yahoo.it
Mon Dec 23 12:26:36 UTC 2013


Hi.
I'm trying to install OSMOSdr on a Raspberry Pi.
I'm following this guide: http://www.hamradioscience.com/raspberry-pi-as-remote-server-for-rtl2832u-sdr/

After installing I try to test the RTL2832 USB SDR but I have this error:

root at raspberrypi:~/rtl2832/rtl-sdr/build# rtl_test
Found 1 device(s):
  0:  Generic RTL2832U OEM

Using device 0: Generic RTL2832U OEM

Kernel driver is active, or device is claimed by second instance of librtlsdr.
In the first case, please either detach or blacklist the kernel module
(dvb_usb_rtl28xxu), or enable automatic detaching at compile time.

usb_claim_interface error -6
Failed to open rtlsdr device #0.


This is my lsmod:


root at raspberrypi:~# lsmod
Module                  Size  Used by
tun                    18459  2
i2c_dev                 5557  0
w1_therm                2921  0
w1_gpio                 2363  0
wire                   24832  2 w1_gpio,w1_therm
cn                      4783  1 wire
snd_bcm2835            16165  0
evdev                   9419  1
r820t                  16279  1
rtl2832                 8020  1
snd_soc_bcm2708_i2s     5474  0
regmap_mmio             2806  1 snd_soc_bcm2708_i2s
dvb_usb_rtl28xxu       14333  0
dvb_usb_v2             14860  1 dvb_usb_rtl28xxu
rc_core                16313  3 dvb_usb_rtl28xxu,dvb_usb_v2
rtl2830                 7378  1 dvb_usb_rtl28xxu
snd_soc_core          131268  1 snd_soc_bcm2708_i2s
dvb_core               92797  3 rtl2830,rtl2832,dvb_usb_v2
regmap_spi              1897  1 snd_soc_core
snd_pcm                81593  2 snd_bcm2835,snd_soc_core
snd_page_alloc          5156  1 snd_pcm
regmap_i2c              1645  1 snd_soc_core
snd_compress            8076  1 snd_soc_core
snd_seq                53769  0
snd_timer              20133  2 snd_pcm,snd_seq
snd_seq_device          6473  1 snd_seq
leds_gpio               2059  0
led_class               3688  1 leds_gpio
snd                    61291  7 snd_bcm2835,snd_soc_core,snd_timer,snd_pcm,snd_seq,snd_seq_device,snd_compress
i2c_bcm2708             3949  0


This is a portion of /var/log/messages

.
.

.
Dec 23 13:15:06 raspberrypi kernel: [    2.369348] usb 1-1: new high-speed USB device number 2 using dwc_otg
Dec 23 13:15:06 raspberrypi kernel: [    2.377867] Indeed it is in host mode hprt0 = 00001101
Dec 23 13:15:06 raspberrypi kernel: [    2.387121] devtmpfs: mounted
Dec 23 13:15:06 raspberrypi kernel: [    2.399736] Freeing unused kernel memory: 144K (c0572000 - c0596000)
Dec 23 13:15:06 raspberrypi kernel: [    2.590087] usb 1-1: New USB device found, idVendor=0424, idProduct=9512
Dec 23 13:15:06 raspberrypi kernel: [    2.599431] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
Dec 23 13:15:06 raspberrypi kernel: [    2.609377] hub 1-1:1.0: USB hub found
Dec 23 13:15:06 raspberrypi kernel: [    2.615786] hub 1-1:1.0: 3 ports detected
Dec 23 13:15:06 raspberrypi kernel: [    2.899604] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
Dec 23 13:15:06 raspberrypi kernel: [    3.009979] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
Dec 23 13:15:06 raspberrypi kernel: [    3.018605] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
Dec 23 13:15:06 raspberrypi kernel: [    3.047105] smsc95xx v1.0.4
Dec 23 13:15:06 raspberrypi kernel: [    3.124437] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-bcm2708_usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:30:43:fd
Dec 23 13:15:06 raspberrypi kernel: [    3.229549] usb 1-1.3: new high-speed USB device number 4 using dwc_otg
Dec 23 13:15:06 raspberrypi kernel: [    3.352535] usb 1-1.3: New USB device found, idVendor=0bda, idProduct=2838
Dec 23 13:15:06 raspberrypi kernel: [    3.365766] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Dec 23 13:15:06 raspberrypi kernel: [    3.375070] usb 1-1.3: Product: RTL2838UHIDIR
Dec 23 13:15:06 raspberrypi kernel: [    3.381218] usb 1-1.3: Manufacturer: Realtek
Dec 23 13:15:06 raspberrypi kernel: [    3.391654] usb 1-1.3: SerialNumber: 00000001
Dec 23 13:15:06 raspberrypi kernel: [    5.123693] bcm2708_i2c_init_pinmode(0,0)
Dec 23 13:15:06 raspberrypi kernel: [    5.249498] bcm2708_i2c_init_pinmode(0,1)
Dec 23 13:15:06 raspberrypi kernel: [    5.255625] bcm2708_i2c bcm2708_i2c.0: BSC0 Controller at 0x20205000 (irq 79) (baudrate 100k)
Dec 23 13:15:06 raspberrypi kernel: [    5.468627] bcm2708_i2c_init_pinmode(1,2)
Dec 23 13:15:06 raspberrypi kernel: [    5.545257] bcm2708_i2c_init_pinmode(1,3)
Dec 23 13:15:06 raspberrypi kernel: [    5.614064] bcm2708_i2c bcm2708_i2c.1: BSC1 Controller at 0x20804000 (irq 79) (baudrate 100k)
Dec 23 13:15:06 raspberrypi kernel: [    6.451707] usb 1-1.3: dvb_usb_v2: found a 'Realtek RTL2832U reference design' in warm state
Dec 23 13:15:06 raspberrypi kernel: [    6.510309] usbcore: registered new interface driver dvb_usb_rtl28xxu
Dec 23 13:15:06 raspberrypi kernel: [    6.552127] usb 1-1.3: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer
Dec 23 13:15:06 raspberrypi kernel: [    6.575184] DVB: registering new adapter (Realtek RTL2832U reference design)
Dec 23 13:15:06 raspberrypi kernel: [    6.614879] bcm2708-i2s bcm2708-i2s.0: Failed to create debugfs directory
Dec 23 13:15:06 raspberrypi kernel: [    6.639092] usb 1-1.3: DVB: registering adapter 0 frontend 0 (Realtek RTL2832 (DVB-T))...
Dec 23 13:15:06 raspberrypi kernel: [    6.693199] r820t 2-001a: creating new instance
Dec 23 13:15:06 raspberrypi kernel: [    6.721703] r820t 2-001a: Rafael Micro r820t successfully identified
Dec 23 13:15:06 raspberrypi kernel: [    6.744416] Registered IR keymap rc-empty
Dec 23 13:15:06 raspberrypi kernel: [    6.755520] input: Realtek RTL2832U reference design as /devices/platform/bcm2708_usb/usb1/1-1/1-1.3/rc/rc0/input0
Dec 23 13:15:06 raspberrypi kernel: [    6.785036] rc0: Realtek RTL2832U reference design as /devices/platform/bcm2708_usb/usb1/1-1/1-1.3/rc/rc0
Dec 23 13:15:06 raspberrypi kernel: [    6.808934] usb 1-1.3: dvb_usb_v2: schedule remote query interval to 400 msecs
Dec 23 13:15:06 raspberrypi kernel: [    6.840041] usb 1-1.3: dvb_usb_v2: 'Realtek RTL2832U reference design' successfully initialized and connected
Dec 23 13:15:06 raspberrypi kernel: [   10.489768] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
Dec 23 13:15:06 raspberrypi kernel: [   10.929880] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
.
.
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Any idea to how to solve?
Many thanks!!

 
73
Fabio, IZ8MBW
www.iz8mbw.net
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