TN.Frank Posted February 3, 2014 Share Posted February 3, 2014 I have a little Acer Aspire One ZG5 Netbook that I put Kali Linux 1.0.6 on last night so I can try out SDR on it. I'd been running Point Linux 2.2(Debian 7 Stable with MATE DE) so Kali isn't any heavier with it's GNOME 3 Classic Mode DE, anyway, I digress. I'm running SDR with the Kali install on my HP/Compaq nc6400 no problems at all but the little Netbook seems to stutter quite a bit when I try to run SDR. Are there any tips or tricks to get it working right or is that little N270 1.6GHz Atom, even with HyperThreading just not enough to work with SDR? Thanks in advance. Quote Link to comment Share on other sites More sharing options...
mreidiv Posted February 4, 2014 Share Posted February 4, 2014 not sure how to do it on linux but you need to set the program that you are using to real time processing in windows you just go into task manager and set the priority. Quote Link to comment Share on other sites More sharing options...
TN.Frank Posted February 4, 2014 Author Share Posted February 4, 2014 I have the same version of Linux on both my laptop and my Netbook and I set up Gqrx the same for both but the Netbook audio isn't on track with the freq. where the actual radio station should be and is all choppy sounding. I'm sure it's just a configuration tweak more then anything. My little Netbook should have enough "umph" to decode radio since it works fine with Clementine and streaming radio over the web. I just hope I can get it sorted out. Thanks for the reply. Quote Link to comment Share on other sites More sharing options...
no42 Posted February 4, 2014 Share Posted February 4, 2014 you could try using a more light-weight window manger. e.g. Pi uses LXDE, or openbox. You can also try to 'renice' the process in linx to change its priority example: sudo renice -n -20 -p 85309 command breakdown renice -n <number> -p <process> negative numbers have higher priority, therefore highest -20, lowest priority 20, with 0 = base / normal Quote Link to comment Share on other sites More sharing options...
TN.Frank Posted February 5, 2014 Author Share Posted February 5, 2014 Currently I'm only using around 155MB of RAM to run this DE so it is pretty light weight IMHO. Sounds like what happens when my laptop has the Freq. Correction off, kind of skippy or choppy. I'm not a programer so I have no real clue as to what you're talking about changing the priority although I do understand that process on a computer get dibs on the CPU and if I do understand what you're saying it's to make Gqrx more important then other processes so it'll get the CPU time first. Just like to get this figured out so when I'm out and about I can listen to radio on my Netbook if I get the urge. Quote Link to comment Share on other sites More sharing options...
TN.Frank Posted February 5, 2014 Author Share Posted February 5, 2014 Ok, found a tutorial on-line about how to set priorities and set Gqrx to -20 but it's still skippy. Even set Plusaudio to -19 to see if that would help but no dice. I guess this little Netbook just doesn't have the "umph" it takes to run Gqrx and SDR. Probably just stick Point Linux back onto it and use it for "normal" stuff and look around for a small laptop to use for a take-a-long SDR box. Thanks for the help guys. Quote Link to comment Share on other sites More sharing options...
no42 Posted February 5, 2014 Share Posted February 5, 2014 (edited) what is your processor load? you can get this from 'htop' , 'sar' or 'mpstat -P ALL' Edited February 5, 2014 by midnitesnake Quote Link to comment Share on other sites More sharing options...
TN.Frank Posted February 5, 2014 Author Share Posted February 5, 2014 What about top, could I get it from that? Of course doesn't really matter, Kali is off of the Netbook and Point Linux is back on so it's pretty much a moot point right now. Quote Link to comment Share on other sites More sharing options...
TN.Frank Posted February 6, 2014 Author Share Posted February 6, 2014 Now I'm starting to second guess myself and think that maybe I should have tweaked the Freq. Offset a bit more. One guy that I saw on the interweb had his set to 17ppm, didn't think that some computers would need that much to correct the freq. with the dongle that they had. Oh well, not going to sweat it, I still have my laptop to play with SDR on. Quote Link to comment Share on other sites More sharing options...
TN.Frank Posted February 11, 2014 Author Share Posted February 11, 2014 Ok, figured out a HUGE solution. Buy an acutal laptop with a dual core processor and a bigger screen so you can see all of Gqrx when it's running. The 12.1" HP/Compaq NC4400 took to Gqrx like a duck to water. Still smaller then my 14.1" laptops but it is a bit larger then the 8.9" Netbook. Still, it's working where the Netbook didn't so that's a huge plus right there for the little extra size and weight. Quote Link to comment Share on other sites More sharing options...
krustkore Posted February 21, 2014 Share Posted February 21, 2014 I tried SDR# last night on my netbook running Arch on my eeepc 1005ha, and it bogged down and stuttered. I think the issue was touched on in the last episode when Darren mentioned the processor gets overworked with no modulation. I tried pentoo on the same netbook with GRC, using the same hardcoded radio they created, and it ran no fine, with no stuttering. Quote Link to comment Share on other sites More sharing options...
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