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https://github.com/rtlsdrblog/rtl-sdr-blog.git
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56 lines
1.7 KiB
Plaintext
56 lines
1.7 KiB
Plaintext
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rtl-sdr for Debian
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In the beginning Antti Palosaari noticed that some digital video
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receiver tuners can be turned into a cheap software defined radio.
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Since there is also support in the Linux kernel to use these devices
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as digital video receivers, by default the hardware will be claimed
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by Linux keernel drivers for that purpose.
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Having these rtl-sdr packages installed likely means that these
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devices should be available for the alternate software defined
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radio use.
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The librtlsdr0 package in Debian has configuration files to
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help manage the conflicting uses:
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1. Blacklists DVB-T kernel modules provided by the Linux kernel
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-------------------------------------------------------------------
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Config file:
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/etc/modprobe.d/librtlsdr-blacklist.conf
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contains lines to blacklist dvb_usb_rtl28xxu, e4000 and rtl2832
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kernel modules.
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Should you wish to use a device via the Linux video receiver software
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while still having the librtlsdr0 package installed you may edit
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this file. (Placing a # at the beginning os a line makes it a comment.)
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Then unplug/plug the USB stick.
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Not that if rtl-sdr applications are then run, they will complain about
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failing to open the device. In that case, restore the blacklist and
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unplug/plug the USB stick.
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If librtlsdr-blacklist.conf does not exist, then rtl-sdr was built
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with the DETACH_KERNEL_DRIVER option.
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2. Permissions
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--------------
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Devices are available to users in the plugdev group.
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The librtlsdr0 package installs these default rules:
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/lib/udev/rules.d/60-librtlsdr0.rules
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If you have permissions issues, you may override these values
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with your own rules in /etc:
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/etc/udev/rules.d/60-librtlsdr0.rules
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After editing udev rules, run as root:
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udevadm control --reload-rules
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