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 Forum index » House Training » Bugs ( Submit bugs )
rc.network::run_iw_scan sleep time too short
Moderators: Flash, Ian, JohnMurga
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s243a

Joined: 02 Sep 2014
Posts: 2158
PostPosted: Wed 19 Oct 2016, 03:38    Post subject:  rc.network::run_iw_scan sleep time too short  
rc.network does not connect on startup for a D-Link Dual band N600 but will connect if I use the "Network Wizard (see previous thread)".

with standard sleep times in line 224 to 232 of /etc/rc.d/rc,network

Code:

   rm /tmp/iwscan*.tmp 2>/dev/null
   iwlist "$INTERFACE" scan >/tmp/iwscan1.tmp 2>&1
   if [ -n "$IsPCMCIA" ] ; then
     sleep 1
   else
     usleep 100000
   fi
   iwlist "$INTERFACE" scan >/tmp/iwscan2.tmp 2>&1
ScanListFile=$(du -b /tmp/iwscan*.tmp |sort -n | tail -n1 |cut -f2)

(source, my notes)

I only get three cells in my cell list. However, if I run from the command line

Code:

iwscan ra0 scan


I get 16 cells.

Changing the sleep time to 5 solves the problem but slows down the script a lot.


(Edit: deleted stuff in this post about loops)
Last edited by s243a on Thu 20 Oct 2016, 01:49; edited 1 time in total
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s243a

Joined: 02 Sep 2014
Posts: 2158
PostPosted: Wed 19 Oct 2016, 03:56    Post subject:  
Not sure about my looping problem above but I noticed that on lines 671 to 674 there is

Code:

  # if we got here, nothing worked, clean up
  # clean up (kills dhcpcd etc)
  cleanUpInterface "$INTERFACE"
  ifconfig "$INTERFACE" down


(Edit: deleted stuff in this post about loops)

I also commented out (see post) because this line was preventing me from connecting to wireless if I had my hard wired Ethernet interface plugged in. As I noted, I am using hard wired for a local network and wireless for my internet connection.
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