Differences

This shows you the differences between two versions of the page.

Link to this comparison view

dob:tech:zotac.zbox [2018/06/10 21:03] (current)
Line 1: Line 1:
 +== Getting server to boot to terminal by default ==
 +
 +Having problems with usb connection dropping every 1 to 2 days for connected weather station, which then requires a reboot to fix.
 +
 +Looking at running server headless to reduce resources used.
 +To achieve this edit:\\
 +  /​etc/​default/​grub
 +
 +put "​text"​ into the line:\\
 +  GRUB_CMLDLINE_LINUX_DEFAULT="​text"​
 +
 +Restart Grub:
 +  sudo update-grub
 +  reboot
 +
 +udisks automounting is running apparently as part of gnome.. no gnome - no automounting
 +
 +Fix ((http://​angryelectron.com/​ubuntu-server-automount-removable-media/​)) is to use udisks-glue
 +  sudo apt-get install usbmount udisks udisks-glue
 +
 +  git clone https://​gist.github.com/​5399914.git udisks-glue ​ #(or copy and paste if you don't like git)
 +  cd udisks-glue
 +  chmod +x udisks-glue
 +  sudo cp udisks-glue /​etc/​init.d/​.
 +  sudo update-rc.d udisks-glue defaults
 +
 +
 +
 +
 +== wireless connection problems ==
 +Having major problems with the wireless connection.
 +Wireless card can be found from command:
 +
 +  lspci | grep Network
 +
 +Atheros AR9285
 +
 +has not good reception of signal - 2-3 bars from 5, but problem is that it drops this signal periodically and also has high packet loss.
 +
 +
 +Followed some instructions at www.xors.me/?​p=1069 to install some driver - but I still have problems
 +
 +Seeing some strange loop for wlan running in syslog
 +
 +
 +<​code>​
 +Dec 26 11:24:58 hal NetworkManager[809]:​ <​info>​ (wlan0): supplicant interface state: disconnected -> scanning
 +Dec 26 11:24:59 hal wpa_supplicant[901]:​ Trying to authenticate with 84:​a8:​e4:​64:​c4:​fc (SSID='​Eisenheim'​ freq=2437 MHz)
 +Dec 26 11:24:59 hal NetworkManager[809]:​ <​info>​ (wlan0): supplicant interface state: scanning -> authenticating
 +Dec 26 11:24:59 hal kernel: [ 1203.141875] wlan0: authenticate with 84:​a8:​e4:​64:​c4:​fc (try 1)
 +Dec 26 11:24:59 hal kernel: [ 1203.144098] wlan0: authenticated
 +Dec 26 11:24:59 hal wpa_supplicant[901]:​ Trying to associate with 84:​a8:​e4:​64:​c4:​fc (SSID='​Eisenheim'​ freq=2437 MHz)
 +Dec 26 11:24:59 hal kernel: [ 1203.144591] wlan0: associate with 84:​a8:​e4:​64:​c4:​fc (try 1)
 +Dec 26 11:24:59 hal NetworkManager[809]:​ <​info>​ (wlan0): supplicant interface state: authenticating -> associating
 +Dec 26 11:24:59 hal kernel: [ 1203.148323] wlan0: RX ReassocResp from 84:​a8:​e4:​64:​c4:​fc (capab=0x411 status=0 aid=6)
 +Dec 26 11:24:59 hal kernel: [ 1203.148332] wlan0: associated
 +Dec 26 11:24:59 hal wpa_supplicant[901]:​ Associated with 84:​a8:​e4:​64:​c4:​fc
 +Dec 26 11:24:59 hal NetworkManager[809]:​ <​info>​ (wlan0): supplicant interface state: associating -> associated
 +Dec 26 11:24:59 hal NetworkManager[809]:​ <​info>​ (wlan0): supplicant interface state: associated -> 4-way handshake
 +Dec 26 11:24:59 hal wpa_supplicant[901]:​ WPA: Key negotiation completed with 84:​a8:​e4:​64:​c4:​fc [PTK=CCMP GTK=CCMP]
 +Dec 26 11:24:59 hal wpa_supplicant[901]:​ CTRL-EVENT-CONNECTED - Connection to 84:​a8:​e4:​64:​c4:​fc completed (reauth) [id=0 id_str=]
 +Dec 26 11:24:59 hal NetworkManager[809]:​ <​info>​ (wlan0): supplicant interface state: 4-way handshake -> completed
 +</​code>​
 +
 +This seems to be running constantly - and presumably crashes out every so often because of some small variation in Wifi signal strength and then has some issues reconnecting. ​
 +
 +What is the purpose of this ?
 +
 +
 +==== Testing Network Speeds ====
 +Run on server hal
 +  iperf -s
 +
 +<​code>​
 +dobrien@epicurus [0]   ~
 +> iperf -c hal
 +------------------------------------------------------------
 +Client connecting to hal, TCP port 5001
 +TCP window size: 23.5 KByte (default)
 +------------------------------------------------------------
 +[  3] local 192.168.3.105 port 33992 connected with 192.168.3.104 port 5001
 +[ ID] Interval ​      ​Transfer ​    ​Bandwidth
 +[  3]  0.0-10.9 sec  2.38 MBytes ​ 1.83 Mbits/sec
 +
 +</​code>​
 +
 +
 +<​code>​
 +dobrien@epicurus [0]   ~
 +> iperf -c raspbmc
 +------------------------------------------------------------
 +Client connecting to raspbmc, TCP port 5001
 +TCP window size: 23.5 KByte (default)
 +------------------------------------------------------------
 +[  3] local 192.168.3.105 port 60290 connected with 192.168.3.106 port 5001
 +[ ID] Interval ​      ​Transfer ​    ​Bandwidth
 +[  3]  0.0-10.2 sec  7.62 MBytes ​ 6.24 Mbits/sec
 +
 +</​code>​
  
Recent changes RSS feed Creative Commons License Donate Minima Template by Wikidesign Driven by DokuWiki