Does not work Gqrx

Then you are in a partial upgrade state. Also post:

ldd /usr/bin/gqrx

I’d look for which package provides that library - or is supposed to provide it.
Apparently it isn’t there.

I have zero experience in this SDR area.

It would be my guess and recommendation to make sure that your system is fully updated.
It probably isn’t.

None. :smiley:


Ah wait, I just figured this is for ARM. :man_shrugging: Well ldd output would still be nice.
And add to it:

pacman -Q gqrx rtl-sdr


Nevermind, gqrx wasn’t pushed into stable and testing ARM yet, so you’ll have to wait for that.

Ahh - ok.
I try to pay attention, but I often miss this, at least initially.

In this case:
I have zero knowledge and should not have said anything at all.

Sorry @Craft - nevermind. Ignore what I said.

That ldd output is unreadable.

Anyway, as I said, you either have to wait for gqrx to be pushed to stable, take it from unstable branch or downgrade rtl-sdr.

My system has been completely updated to stable mode.

Please my result:

# pacman -Q gqrx rtl-sdr
gqrx 2.17.3-1
rtl-sdr 1:2.0.1-3


ldd /usr/bin/gqrx (0x0000ffffb45ae000) => /usr/lib/ (0x0000ffffb40c0000) => /usr/lib/ (0x0000ffffb40a0000) => /usr/lib/ (0x0000ffffb3fb0000) => /usr/lib/ (0x0000ffffb3f40000) => /usr/lib/ (0x0000ffffb3f20000) => /usr/lib/ (0x0000ffffb3da0000) => /usr/lib/ (0x0000ffffb3d20000) => /usr/lib/ (0x0000ffffb3520000) => /usr/lib/ (0x0000ffffb2c40000) => /usr/lib/ (0x0000ffffb25c0000) => /usr/lib/ (0x0000ffffb2520000) => /usr/lib/ (0x0000ffffb2420000) => /usr/lib/ (0x0000ffffb2140000) => /usr/lib/ (0x0000ffffb2100000) => /usr/lib/ (0x0000ffffb1f30000) => /usr/lib/ (0x0000ffffb1ec0000) => /usr/lib/ (0x0000ffffb1db0000) => /usr/lib/ (0x0000ffffb1b50000) => /usr/lib/ (0x0000ffffb1aa0000) => /usr/lib/ (0x0000ffffb1a70000) => /usr/lib/ (0x0000ffffb18b0000)
	/lib/ => /usr/lib/ (0x0000ffffb4575000) => /usr/lib/ (0x0000ffffb1840000) => /usr/lib/ (0x0000ffffb1820000) => /usr/lib/ (0x0000ffffb1750000) => /usr/lib/ (0x0000ffffb1720000) => /usr/lib/ (0x0000ffffb1700000) => /usr/lib/ (0x0000ffffb1260000) => /usr/lib/ (0x0000ffffb11e0000) => /usr/lib/ (0x0000ffffb11c0000) => /usr/lib/ (0x0000ffffb1180000) => /usr/lib/ (0x0000ffffb1160000) => not found => /usr/lib/ (0x0000ffffb10b0000) => /usr/lib/ (0x0000ffffb0010000) => /usr/lib/ (0x0000ffffafff0000) => /usr/lib/ (0x0000ffffaff30000) => /usr/lib/ (0x0000ffffaff10000) => /usr/lib/ (0x0000ffffafe80000) => /usr/lib/pulseaudio/ (0x0000ffffafde0000) => /usr/lib/ (0x0000ffffafd60000) => /usr/lib/ (0x0000ffffafcd0000) => /usr/lib/ (0x0000ffffafc90000) => /usr/lib/ (0x0000ffffafc60000) => /usr/lib/ (0x0000ffffafc00000) => /usr/lib/ (0x0000ffffafaa0000) => /usr/lib/ (0x0000ffffaf910000) => /usr/lib/ (0x0000ffffaf820000) => /usr/lib/ (0x0000ffffaf7c0000) => /usr/lib/ (0x0000ffffaf770000) => /usr/lib/ (0x0000ffffaf700000) => /usr/lib/ (0x0000ffffaf6b0000) => /usr/lib/ (0x0000ffffaf560000) => /usr/lib/ (0x0000ffffaf530000) => /usr/lib/ (0x0000ffffaf450000) => /usr/lib/ (0x0000ffffaf0c0000) => /usr/lib/ (0x0000ffffaee80000) => /usr/lib/ (0x0000ffffaed40000) => /usr/lib/ (0x0000ffffaed10000) => /usr/lib/ (0x0000ffffaecf0000) => /usr/lib/ (0x0000ffffaec50000) => /usr/lib/ (0x0000ffffaeba0000) => /usr/lib/ (0x0000ffffaeaa0000) => /usr/lib/ (0x0000ffffaea80000) => /usr/lib/ (0x0000ffffaea00000) => /usr/lib/ (0x0000ffffae970000) => /usr/lib/ (0x0000ffffae920000) => /usr/lib/ (0x0000ffffae840000) => /usr/lib/ (0x0000ffffae780000) => /usr/lib/ (0x0000ffffae660000) => /usr/lib/ (0x0000ffffae610000) => /usr/lib/ (0x0000ffffae5f0000) => /usr/lib/ (0x0000ffffae5c0000) => /usr/lib/ (0x0000ffffae5a0000) => /usr/lib/ (0x0000ffffae570000) => /usr/lib/ (0x0000ffffae530000) => /usr/lib/libproxy/ (0x0000ffffae510000) => /usr/lib/ (0x0000ffffae490000) => /usr/lib/ (0x0000ffffae450000) => /usr/lib/ (0x0000ffffae3f0000) => /usr/lib/ (0x0000ffffae3c0000) => /usr/lib/ (0x0000ffffaddb0000) => /usr/lib/ (0x0000ffffadd90000) => /usr/lib/ (0x0000ffffadd50000) => /usr/lib/ (0x0000ffffadd30000) => /usr/lib/ (0x0000ffffadba0000) => /usr/lib/ (0x0000ffffadb60000) => /usr/lib/ (0x0000ffffadac0000) => /usr/lib/ (0x0000ffffada80000) => /usr/lib/ (0x0000ffffada50000) => /usr/lib/ (0x0000ffffabbb0000) => /usr/lib/ (0x0000ffffabb90000) => /usr/lib/ (0x0000ffffaba80000) => /usr/lib/ (0x0000ffffaba40000) => /usr/lib/ (0x0000ffffaba00000) => /usr/lib/ (0x0000ffffab9a0000) => /usr/lib/ (0x0000ffffab980000) => /usr/lib/ (0x0000ffffab8c0000) => /usr/lib/ (0x0000ffffab870000) => /usr/lib/ (0x0000ffffab800000) => /usr/lib/ (0x0000ffffab790000) => /usr/lib/ (0x0000ffffab700000) => /usr/lib/ (0x0000ffffab6c0000) => /usr/lib/ (0x0000ffffab5f0000) => /usr/lib/ (0x0000ffffab510000) => /usr/lib/ (0x0000ffffab2b0000) => /usr/lib/ (0x0000ffffab240000) => /usr/lib/ (0x0000ffffab220000) => /usr/lib/ (0x0000ffffab200000) => /usr/lib/ (0x0000ffffab1a0000) => /usr/lib/ (0x0000ffffab180000) => /usr/lib/ (0x0000ffffab160000) => /usr/lib/ (0x0000ffffab120000) => /usr/lib/ (0x0000ffffab0d0000) => /usr/lib/ (0x0000ffffab080000) => /usr/lib/ (0x0000ffffab020000) => /usr/lib/ (0x0000ffffaaff0000) => /usr/lib/ (0x0000ffffaafd0000) => /usr/lib/ (0x0000ffffaaf40000) => /usr/lib/ (0x0000ffffaad70000) => /usr/lib/ (0x0000ffffaad00000)

Moderator edit: In the future, please use proper formatting: [HowTo] Post command output and file content as formatted text

Seems to work ok on the unstable branch.

That’s provided by rtl-sdr, FYI. However, the current library is currently

❯ pacman -Fx librtlsdr
extra/rtl-sdr 1:2.0.1-3

Wow, this is awesome! :+1: Can I do this in a stable branch?

Yes, the same version is in all branches. See Packages

However you may need to update your local database to match the repo:

sudo pacman -Fy

I’ve already done this -

sudo pacman -Fy


pamac install rtl-sdr
Attention: rtl-sdr-1:2.0.1-3 is not outdated -- skipped
There are no tasks.
The transaction has been completed successfully.

What exactly should I do next?

I have no clue what you may or may not have going on there. The one error you mentioned above is for SoapySDR which I do not have but see gqrx searching for it also in my terminal before it finds my device.

[ray@jellyfin ~]$ gqrx
gr-osmosdr (0.2.0) gnuradio
built-in source types: file rtl rtl_tcp uhd hackrf bladerf rfspace airspy soapy redpitaya 
vmcircbuf_prefs::get :info: /home/ray/.gnuradio/prefs/vmcircbuf_default_factory failed to open: bad true, fail true, eof true
rx_nb_cc :info: set_min_output_buffer on block 12 to 32768
Resampling audio 96000 -> 48000
BandPlanFile is /home/ray/.config/gqrx/bandplan.csv
BookmarksFile is /home/ray/.config/gqrx/bookmarks.csv
[INFO] [UHD] linux; GNU C++ version 12.1.0; Boost_108300; UHD_4.6.0.0-0-unknown
[ERROR] SoapySDR::loadModule(/usr/lib/SoapySDR/modules0.8/
  dlopen() failed: cannot open shared object file: No such file or directory
QFSFileEngine::open: No file name specified
gr-osmosdr (0.2.0) gnuradio
built-in source types: file rtl rtl_tcp uhd hackrf bladerf rfspace airspy soapy redpitaya 
Using device #0 Realtek RTL2838UHIDIR SN: 00000001
Found Rafael Micro R820T tuner

One thing I do have is a blacklist loaded at boot as some modules interfere with the rtl-sdr.

[ray@jellyfin ~]$ cat /etc/modprobe.d/blacklist-rtlsdr.conf 

blacklist dvb_core
blacklist dvb_usb_rtl2832u
blacklist dvb_usb_rtl28xxu
blacklist dvb_usb_v2
blacklist r820t
blacklist rtl2830
blacklist rtl2832
blacklist rtl2832_sdr
blacklist rtl2838

# This alone will not prevent a module being loaded if it is a
# required or an optional dependency of another module. Some kernel
# modules will attempt to load optional modules on demand, which we
# mitigate here by causing /bin/false to be run instead of the module.
# The next time the loading of the module is attempted, the /bin/false
# will be executed instead. This will prevent the module from being
# loaded on-demand. Source:

install dvb_core /bin/false
install dvb_usb_rtl2832u /bin/false
install dvb_usb_rtl28xxu /bin/false
install dvb_usb_v2 /bin/false
install r820t /bin/false
install rtl2830 /bin/false
install rtl2832 /bin/false
install rtl2832_sdr /bin/false
install rtl2838 /bin/false

No idea because…

… tells us absolutely nothing. Please try again.

All I did was check the library versions and told you how to check–and that’s all I’m going to do.

Please see:

But gqrx is not.

I see. Well, I suggest @Craft switch to the testing branch and see if that makes any difference.

I found a simple solution that helped launch Gqrx 2.17.3 from the stable branch:

ln -s  /usr/lib/    /usr/lib/

That’s never a solution.

But it really works. And it’s better than waiting for who knows how long until someone finds the “right” solution.

Sorry, no, it’s not a solution. While you think it might work temporarily, you will have problems in the future.

If you think you know better, then why are you asking for help?

This thread will be unlisted so others don’t find it and follow it.