Can't blacklist SDR

[prito]

I can’t blacklist the drives using the process as follows:
sudo nano /etc/modprobe.d/blacklist-rtl.conf
Next after adding the following three lines to the file:
blacklist dvb_usb_rtl28xxu
blacklist rtl2832
blacklist rtl2830

I next saved the file and exited the editor.

I next rebooted using: sudo shutdown -r now.

I discover after that the SDR is not blacklisted

Can someone please help?
I’m a newbie but followed all instructions I could find and nothing seems to work. After a reboot, dump1090-fa no longer finds the USB

[abcd567]

(1) Please post output of following command

lsusb 

 

(2) Please issue following commands and post output of last command

sudo systemctl stop dump1090-fa piaware  

rtl_test -t    

 

[prito]

Abcd567 you are a legend. Thank you for your help. Here are the results:

[abcd567]

Great!
Your dongle is healthy and available for use by dump1090-fa.

You can check this by following commands:

sudo systemctl restart dump1090-fa  

sudo systemctl status dump1090-fa  

After 10 minutes:

sudo systemctl status piaware   

 

[prito]

But if I reboot it again it will give the same problems no? The blacklist will not work or will reset again?
It was not doing this and now started out of nothing…

[prito]

Followed your instructions and again the same problem on a a test.
I haven’t rebooted.

[abcd567]

@prito

Followed your instructions and again the same problem on a a test.
I haven’t rebooted.

(upload://xLEPJpVfLQT06sUiaSaoSIpqC5Z.jpeg)

The error (usb_claim_interface error -6) on conducting rtl_test -t is shown because the SDR is NOT free for test, it is being used by dump1090-fa.

You have to first STOP dump1090-fa, then run the test, like below:

sudo systemctl stop dump1090-fa   

rtl_test -t   

 

After test, RESTART dump1090-fa

sudo systemctl restart dump1090-fa   

 

[prito]

Thank you very much abcd567. Your help is greatly appreciated.