network manager – Trouble connecting to XFINITY wifi, using Kubuntu 20.04

I just finished installing Kubuntu 20.04. Everything looks great, etc., but I am having trouble connecting to a secure XFINITY wifi hotspot. I am, however, able to connect with all of the other wifi networks I have tried, including non-secure xfinity wifi. (“XFINITY” in all caps is how they indicate their secure wifi spots, as opposed to “xfinity” all lowercase which indicates their non-secure wifi hotspots.) I’ve also seen others with similar issues, with particular wifi spots, such as at work or university.

I’ve scoured the Internet for others with this problem, as well as any solutions of course. The closest I seem to have found to a solution was on this page:

The reason that this solution didn’t actually work for me, however, is that the answer on that page required configuring Network Manager for XFINITY to first select “Tunneled TLS (TTLS)” and then to select “GTC” a little bit down on the gui. For whatever reason, GTC does not appear as an option when TTLS is also selected.

This then sent me off trying to figure out how to somehow add the GTC option, or thinking maybe I could install a different or updated version of Network Manager, or maybe a Snap version, but to make a long story short I never found a working solution. (It would be fantastic to find a Snap version that just works, just as well as say, my phone or even the dreaded Windows for pretty much all wifi connections, which I could then use on other distributions in the future, but this does not have to be a Snap solution. I will take what I can get!)

networking – Correct way to provide a direct network link between 2 devices as well as connecting both to a switch

What is the correct way to configure the PC and Server, so that the loop doesn’t cause networking issues? Meaning, traffic to/from other devices can only go via the switch as normal and neither device is seen as a bridge or route to the other?

Just connect the two using a cable and configure both ports to have IP addresses. Ideally this link should use a completely separate subnet from your main LAN.

Bridging will not occur unless you deliberately set up a bridge. Neither Windows nor FreeBSD (nor any other OS) enable it automatically.

Routing will not occur unless you deliberately set up packet forwarding. Neither Windows nor FreeBSD enable it automatically.

(Additionally, IPv4 uses explicitly configured routing tables, so even if the PC or the server did have routing enabled, routing still wouldn’t occur because other hosts would have no way of knowing that they can use them as gateways. IPv6 would need a little more care to ensure that the machines do not send out Router Advertisements, but that’s also disabled-by-default on both Windows and FreeBSD.)

Of course, if you don’t want the PC to use the server as a gateway, then do not fill in the “Default gateway” field when configuring IP addresses on your 10Gbit NIC…

If in future I upgrade the switch to a fully managed switch that can handle access controls, such as Netgear ProSAFE, or I start to use VLANs on it, does the “correct answer” change?


plotting – Using DateListPlot without connecting dots

I have a list of values like this:

enter image description here

When I plot this data using DateListPlot(data) I get a plot connecting the individual points such as:

enter image description here

My question are:

  1. How can I create the same plot but only getting the individual points without connect them by line?. Similar to the plot below:
  2. How can I get the AM or PM from the times and put them in the x-axis?
  3. How can I space the time to be every 5 minutes when plotting the data (similar to the picture below)?


The data is the following:

{{DateObject({2020, 7, 5, 8, 1, 0.}, "Instant", "Gregorian", -5.), 
  122.}, {DateObject({2020, 7, 5, 8, 6, 0.}, "Instant", 
   "Gregorian", -5.), 
  108.}, {DateObject({2020, 7, 5, 8, 11, 0.}, "Instant", 
   "Gregorian", -5.), 
  99.}, {DateObject({2020, 7, 5, 8, 16, 0.}, "Instant", 
   "Gregorian", -5.), 
  101.}, {DateObject({2020, 7, 5, 8, 21, 0.}, "Instant", 
   "Gregorian", -5.), 
  106.}, {DateObject({2020, 7, 5, 8, 26, 0.}, "Instant", 
   "Gregorian", -5.), 
  110.}, {DateObject({2020, 7, 5, 8, 31, 0.}, "Instant", 
   "Gregorian", -5.), 
  112.}, {DateObject({2020, 7, 5, 8, 36, 0.}, "Instant", 
   "Gregorian", -5.), 
  102.}, {DateObject({2020, 7, 5, 8, 41, 0.}, "Instant", 
   "Gregorian", -5.), 
  96.}, {DateObject({2020, 7, 5, 8, 46, 0.}, "Instant", 
   "Gregorian", -5.), 
  96.}, {DateObject({2020, 7, 5, 8, 51, 0.}, "Instant", 
   "Gregorian", -5.), 
  94.}, {DateObject({2020, 7, 5, 8, 56, 0.}, "Instant", 
   "Gregorian", -5.), 
  92.}, {DateObject({2020, 7, 5, 9, 1, 0.}, "Instant", 
   "Gregorian", -5.), 
  95.}, {DateObject({2020, 7, 5, 9, 6, 0.}, "Instant", 
   "Gregorian", -5.), 
  98.}, {DateObject({2020, 7, 5, 9, 11, 0.}, "Instant", 
   "Gregorian", -5.), 
  93.}, {DateObject({2020, 7, 5, 9, 16, 0.}, "Instant", 
   "Gregorian", -5.), 
  84.}, {DateObject({2020, 7, 5, 9, 21, 0.}, "Instant", 
   "Gregorian", -5.), 
  80.}, {DateObject({2020, 7, 5, 9, 26, 0.}, "Instant", 
   "Gregorian", -5.), 
  78.}, {DateObject({2020, 7, 5, 9, 31, 0.}, "Instant", 
   "Gregorian", -5.), 
  74.}, {DateObject({2020, 7, 5, 9, 36, 0.}, "Instant", 
   "Gregorian", -5.), 
  60.}, {DateObject({2020, 7, 5, 9, 41, 0.}, "Instant", 
   "Gregorian", -5.), 
  54.}, {DateObject({2020, 7, 5, 9, 46, 0.}, "Instant", 
   "Gregorian", -5.), 
  57.}, {DateObject({2020, 7, 5, 9, 51, 0.}, "Instant", 
   "Gregorian", -5.), 
  59.}, {DateObject({2020, 7, 5, 9, 56, 0.}, "Instant", 
   "Gregorian", -5.), 68.}}

samsung – Trouble connecting phone over usb-c

I just got a new samsung phone. It came with usb-c to usb-c cable and no adapters. I tried connecting it to my laptop, which thankfully has an usb-c port. The phone connects at first, starts charging. Then, whether I choose the option to “send files” or “send pictures”, the phone disconnects after a few seconds or so.

It’s really troubling.

My specs (just some of them, I will list more I missed anything important)
Laptop is a 2017 gaming Asus. It has Windows 10 and usb-c port.
Phone is the Samsung Galaxy S20 Ultra.

Some facts:

  • The phone is brand new, from a store, all sealed up.
  • It charges perfectly fine using the cable and a charger.
  • Connection over usb-c does NOT work – it keeps disconnecting, usually after a few seconds.
  • However, I can easily connect a pendrive using an adapter I had before. (I can send data both ways)
  • Using an old usb-c to usb-b cable to connect to my laptop through a different port ALSO works.
  • I get no messages or anything when it disconnects.

What could that mean? Is the usb-c port on my laptop possibly busted, or is there some driver / permission / program I need to use it?

networking – Error connecting Windows 10 PCs to a MAC on a LAN

The Setup:

1x Mac Mini (MM), running OS X El Capitan Version 10.11.6(not Mac server)

5x Windows 10 (W10) PCs

1x LAN wifi

1x LAN ethernet

The Challenge:

Connect all 5 PCs to the MM over the wired LAN or Wifi and map folders on the MM as additional Drives (Eg, P, Q, R etc) on the W10 PCs, as so as to share files stored on the MM. BTW: The MM is not used as a workstation, more as a “server” or pseudo-server.

The Method:

From the PCs Command prompt on the W10 PCs run “net use T: “1nn.nnn.1.14ffffff” /persistent:yes. (real values hidden for security)

The Initial Outcome:

2 of the 5 PCs connected and drive letters assigned – no problems,

3 of the PCs could not connect, error message 71, “No more connections can be made to this remote computer at this time because there are already as many connections as the computer can accept.”

Attempted Solution:

On the W10 PCs; increased the number of currentlogons in the registry from 10 to 100, but this made no difference. I think i should be doing something like this on the MM…

Second Outcome:

No effect.


How do I increase the number of (network?) connections that the MM can accept? I believe this would solve the issue, but if I’m barking up the wrong tree, I would gladly be pointed to another one.

Thanks in Advance

reverse proxy – Connecting with https to a server application on GCE VM through ngrok tunnel

I am observing a strange behaviour with ngrok on a GCE VM.

I fire up a ‘preemptible’ VM instance with static external ip, and start ngrok on it normally. I get the URL that maps incoming https request to http on localhost. I am also able to check the tunnel and everything is working perfectly fine. I create a snapshot of the bootable disk attached to this VM. I turn off the VM.

Then I create another GCE VM that has exact same configuration, network settings (with a different static ip of course) etc except that I disable the preemtibility. The bootable disk is also created through the snapshot above, so it is the exact replica of the disk for the preemtible VM above. I start ngrok on this non-preemtible machine. Ngrok doesn’t complain anything, it seems to have started a tunnel.

Snapshot of ngrok after starting tunnel on the non-interruptible VM

However, the tunnel doesn’t work.
No tunnel found

Can anyone point me to possibe causes / directions to investigate?

I already tried following with no success:

  1. Logging into ngrok and using ngrok authtoken <token> before starting the tunnel
  2. rewriting the host header: ngrok http -host-header=rewrite localhost:3000

Unity development build not connecting to profiler

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air travel – What do I need to know to make my connecting flight? First time with a layover

When your first flight lands:

  1. Get off the plane, taking your carry-on luggage with you

  2. Look for a monitor displaying departing flights

  3. Find your second flight and note its gate number

  4. Go to that gate and wait until it is time to board.

You will not need to go back through security nor pick up any checked luggage in Denver. You will get boarding passes for both flights when you check in in PDX (or online). If something happens and you lose your second boarding pass, it can be reprinted at the departure gate of your DEN-BNA flight.

DEN has three gate areas, A, B and C; every gate number includes the area letter (e.g. A31, B17). Most likely your DEN-BNA flight will depart from the same gate area where the PDX-DEN flight arrived, in which case you only need to walk east or west along the concourse in the appropriate direction until you find the gate. If you should need to go to a different gate area, they are connected by an underground train, which can be reached by going to the center of the concourse and taking an escalator or elevator down.

drac – Connecting to remote console on Dell iDRAC on R815 fails

The iDRAC’s virtual console uses jnlp.

I have installed:

sudo apt-get install icedtea-netx

Connecting to the iDRAC’s webserver works using Firefox. When I click ‘Launch Virtual Console’ it starts the java app. The JVM then asks for a few permissions which I grant (the certificate is selfsigned). But it then fails with: “Connection failed”.

I had this working when running Ubuntu 18.04, but it broke after upgrading the client to Ubuntu 20.04.

What am I missing?

SharePoint Designer 2013 403 Forbidden when connecting to SharePoint Online


I have a new laptop to which I downloaded SharePoint Designer 2013. I am getting a 403 forbidden when trying to open a site from the new computer but when trying to access the sites from my old computer with an SharePoint Designer 2013, I am granted access. In the new download on the new computer, my account is set to the same account as the old instance. I am a global admin. Our sites are classic sites right now until we develop in modern team sites and communications sites, so that is not the issue. Any help will be greatly appreciated.