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András Retzler retzlerandras at gmail.comHi Fabio, I think you should run the following before running any rtl_* commands: sudo rmmod dvb_usb_rtl28xxu You may also blacklist the dvb_usb_rtl28xxu kernel module, so it won't load when you plug in the RTL device. 73! Andras, HA7ILM 2013/12/23 IZ8MBW Fabio <iz8mbw at yahoo.it> > 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) > . > . > . > > Any idea to how to solve? > Many thanks!! > > > 73 > Fabio, IZ8MBW > www.iz8mbw.net > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/osmocom-sdr/attachments/20131223/1276a577/attachment.htm>