Friday, 18 September 2020

Connecting to RLAB remote desktop servers on Ubuntu Linux

Open the builtin Remote Desktop Client

In the Remote Desktop Preference window ensure the following field is set:

Protocol: RDP - Remote Desktop Protocol


On the Basic tab ensure the following fields are set:

Server: servername.rlab.lse.ac.uk

Username: username (NOT RLAB\username)

Password: password

Domain: rlab.lse.ac.uk

Colour depth: True colour (32bpp)


On the Advanced tab ensure the following fields are set:

Quality: Poor (fastest)

Sound: Off

Security: Negotiate


When connecting you are prompted to accept a security certificate. Accept this certificate.


Monday, 8 June 2020

Apple OS X controlling sleep mode

You can use the Energy Saver setting in the System preferences in OS X but you may find that the system still manages to invoke a power saving mode, this is especially painful when you require the machine to be fully up for an extended time, for example when running your first synchronisation of cloud storage. So to control the sleep functions of OS X there is a nice terminal command CAFFEINATE, this can be used to keep all aspects of the system live.

For example typing caffeinate -i -d will prevent the system and hard drive from sleeping. When you do not need to have the machine running fully you just CTRL Z the terminal window and quit terminal.

If you go to the following link you will find the help page for this command, https://ss64.com/osx/caffeinate.html.

Tuesday, 5 May 2020

Internet Connectivity Troubles [esp. Wi-Fi on laptop/tablet PCs] Post Windows 10 Update 1903

At the time of writing, we have experienced this issue on a small range of laptops. This includes the Dell XPS/Inspiron range and some Asus laptop laptops also and appears to occur following the Windows 10 1903 update. 

A quicker fix may be possible by carrying out a Network reset (option in Network Status page).

Symptoms: Loss of internet access via Wi-Fi specifically with very limited Ethernet access if connection option is available on your device.

The Network Status icon (in the Taskbar right-hand end) may indicate no connection, an incorrect connection or it may be missing altogether.

The first step is to check the status of the network: press the Windows Start key and type ‘network’; this should bring up ‘Network Status’ in the list displayed. Select this to open it and if it looks like the image below…
...read on.

Ensure you are logged on as an administrator or have access to the password. In reference back to the Network Status icon in the task bar and the above Network Status screenshot, select Change adapter settings so that the Network Connections window appears and, as you will see below, the Wi-Fi connection status appears to show that a connection exists despite our experience. Close this window and carry on to the next step.


Hold down the Windows Start key (between CTRL and ALT keys) and press the R key
  1. Type 'services.msc',the Services app icon appears, right click it and select 'Run as Administrator and select 'Yes' or enter the administrator credentials (as required) should a dialog box appear
  2. The Services app will open with services listed in Name order (apart from the 2 Microsoft Edge ones) and to ease readability, select the Standard tab at the bottom of the second viewing pane

  3. We need to view the status of the Network List Service therefore, select any of the services and press ‘N’ in order to bring you to the start of all those that start with ‘N’ and scroll down until you see this

  4. Select Network List Service, right-click it to open the sub menu and select Properties
  5. Find the Startup type selection halfway down and you will see that it's set to Disabled  and the Service status shows Stopped which, is the issue here
  6. Set the Startup type to Manual and then click Apply after which, move to Service status and select Manual

  7. Go back to Service status and click Start; a Service Control box appears and the service starts. Once the Service status hows Running, click OK and close the Network List Service properties box and the Services app

Return to Network Status window and you should see the full path between your device and the internet, problem solved hopefully!

Slow Wi-Fi access with Pulse Secure VPN Client

This problem affects both network file transfer and internet access speeds but most particularly, the download side, when Pulse Secure VPN client is running.

I have summarised one of the two solutions (simpler one, less technical) that can be found here: https://kb.pulsesecure.net/articles/Pulse_Secure_Article/KB43833
and attributed to Lokesh T K.

Symptoms:

Cause:
  • Although disputed by some(vendors and users), the most probable cause in lite of our experience, relates to either or both the Windows 10 1809 and the 1903 updates and how they may have affected specific wireless adapter driver files

Solution:
  1. Press the Windows Start key and type 'Control Panelselect Network and Sharing Centre and then select Change Adapter Settings to open Network Connections
  2. Locate and right-click the Wireless network adapter, select Properties
  3. From the list, uncheck the checkbox for Juniper Network Service 

  4. Start Pulse Secure and connect as per usual
  5. Returning to Network Connections, select Pulse Secure virtual adapter

  6. Right-click the adapter and select Properties
  7. From the list, uncheck the checkbox for Juniper Network Service


Fin