Hello,
I have a problem with my usrp b200 at high sample rates (> 6M) connected to USB (2 or 3). Whatever the frequency, the signals on the QT frequency sink "do not move". the computer is not frozen, I can still interact with the window, but the signal just freeze. Everything works fine at a sample rate of 4M or below. I don't think this is a problem with the usrp as it does the same with the hackrf.
My GNU Radio version is 3.8.2.0 (python 3.9.2) and I have just switched from ubuntu 20.04 to Manjaro (Arch based) and as everything worked well with ubuntu with the same configuration and the same computer (usrp with sampling frequency> 40M without problem) I suspect a problem with the Manjaro OS? Does anyone here use Manjaro / Arch and has encountered a similar problem? I'm very happy with the system by the way and I don't really want to switch back so quickly ... :)
The logs don't give much information when the problem occurs:
[INFO] [UHD] linux; GNU C++ version 10.2.0; Boost_107500; UHD_4.0.0.0-0-unknown
[INFO] [B200] Detected Device: B200
[INFO] [B200] Operating over USB 3.
[INFO] [B200] Initialize CODEC control...
[INFO] [B200] Initialize Radio control...
[INFO] [B200] Performing register loopback test...
[INFO] [B200] Register loopback test passed
[INFO] [B200] Setting master clock rate selection to 'automatic'.
[INFO] [B200] Asking for clock rate 16.000000 MHz...
[INFO] [B200] Actually got clock rate 16.000000 MHz.
[INFO] [B200] Asking for clock rate 20.000000 MHz...
[INFO] [B200] Actually got clock rate 20.000000 MHz.
[INFO] [MULTI_USRP] 1) catch time transition at pps edge
[INFO] [MULTI_USRP] 2) set times next pps (synchronously)
O
>>> Done
Thank you for the attention given to my problem,
Thomas