code lots of 0000000`s

[rhurbarb]

Hi all
when i run Gqrx i get this
gqrx
Controlport disabled
No user supplied config file. Using "default.conf"
gr-osmosdr 0.1.4 (0.1.4) gnuradio 3.7.9
built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy redpitaya
Using Volk machine: sse4_2_64_orc
FM demod gain: 1.52789
IQ DCR alpha: 1.04166e-05
Using audio backend: N/A
New filter offset: 0 Hz
BookmarksFile is /home/linuxmint/.config/gqrx/bookmarks.csv
Loading configuration from: "default.conf"
Configuration file: "/home/linuxmint/.config/gqrx/default.conf"
gr-osmosdr 0.1.4 (0.1.4) gnuradio 3.7.9
built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy redpitaya
Using HackRF One with firmware 2015.07.2
New antenna selected: "TX/RX"
********************
Gain name: "RF"
      min: 0
      max: 14
     step: 14
Gain name: "IF"
      min: 0
      max: 40
     step: 8
Gain name: "BB"
      min: 0
      max: 62
     step: 2
********************
No change in output device:
  old:
  new:
IQ DCR samp_rate: 8e+06
IQ DCR alpha: 1.25e-07
Changing NB_RX quad rate: 96000 -> 8e+06
Requested sample rate: 8000000
Actual sample rate   : "8000000.000000"
New FFT rate: 25 Hz
Requested bandwidth: 0 Hz
Actual bandwidth   : 6e+06 Hz
setFreqCorr : 0 ppm
New LNB LO: 0 Hz
New mode index: 4
FM demod gain: 0.509296
Filter preset for mode 4 LO: -80000 HI: 80000
Genrating taps for new filter LO:-80000 HI:80000 TW:32000
Required number of taps: 19
New filter offset: -3005000 Hz
setFftRate to "25 fps"
New FFT rate: 25 Hz
New FFT rate: 25 Hz
setFftSize to "8192"
New FFT rate: 25 Hz
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO

Im a newbie in sdr radio,  running Hackrf here. The videos i have seen give letters and numbers for code but i get lots of 0`s for some reason. Can anyone help please?

[Jeff Long]

Your computer or USB bus is unable to keep up with an 8MS/s stream. "O" is for Overflow.

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[Alexandru Csete]

Note that for hackrf you will always get the OOOOO before DSP is
started. So, if it works fine while DSP is active, there is nothing to
worry about.

Alex

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[rhurbarb]

Thanks for the replies guys, i have formatted my drive thinking i might of had the programs installed incorrectly. There is a video on youtube which shows this problem and how to fix it, I`m on the case and report back with my findings. Cheers all