I have tried to follow your instructions, but as many others have problem to get Gqrx running with LimeSDR Mini.
I have a “clean” Mint 19.1 and I have not tried to mix apt-installs with any builds. I have only done apt-installs from repos to 18.04.
I have problems doing “sudo python setup.py install” and couldn’t install the LMS7002Soapy Python package. I have the driver soapysdr-module-lms7 installed, but I only get the error:
terminate called after throwing an instance of ‘std::runtime_error’
what(): SoapySDR::Device::make() no match
when I start: sudo gqrx and type driver-info as:
Device: Other, Device string: driver=lime,soapy=0
We need a solid instruction for installing Gqrx via PPA’s on a “clean” Ubuntu 18.04. If it is possibly at all?
My LimeSDR Mini can receive on Quisk and linhpsdr, even linhpsdr is a little weak and abort often.
I will give up now and clean my laptop with a fresh Mint 19.1, and maybe try building all packages from source instead.