Can’t install ubuntu 18.04.3

I either get errors or it just prompts me to install it again, without telling me to remove the external device and restart. If I remove the usb it says, “Default Boot Device Missing or Bopot Device Failed.”

When I scan the usb for defects it says there is 1 file tat is defected but it doesn’t even say which one it is.

I installed it from Ubuntu and used rufus. I do a normal install with no third party softwware, then I choose erase disk and I would like to have it encrypted as well with LVM.

I am using an Acer Laptop if that helps.

Can’t enter VPN

I am just getting used to my new Linux laptop (Ubuntu 18.4, switched from Windows). I tried to enter the VPN of my old university in another country, but it doesn’t seem to work.

I downloaded the .ovpn config file from the website of the university and then ran the commands in the terminal seen in screenshot 1. After “Initialization Sequence Completed”, nothing happens anymore, it freezes. Not sure whether it helps, but when I force-quit with ctrl+c, it shows the statements from screenshot2.

What am I doing wrong?

Best, SL

screen1 screen2

Ubuntu 9.04 – Can’t log in (password and username are unknown)

I want to get into the computer but I can’t seem to remember what to put in. I have tried some tutorials on this website but when I press escape nothing happens, except for making a REALLY loud noise. It sounds like a fire alarm. The computer is a very old HP Pavilion Entertainment PC. Any help at all is greatly appreciated!

Leomund’s Tiny Hut — only the caster can’t exit and enter at will?

The text for Leomund’s tiny hut says in part:

Creatures and objects within the dome when you cast this spell can move through it freely.

but also

The spell ends if you leave its area.

I read that as saying that everyone can exit and enter at will, except the caster, who must remain inside the hut for the entire time. Is that correct?

Why can’t the “Variant: Imp Familiar” be found with the Find Familiar spell?

The Find Familiar spell describes a familiar

The Find Familiar spell description explains what a “familiar” is. It describes its properties — acts independently, can’t attack, can deliver spells, can be dismissed into a pocket dimension, etc.

The PHB uses “familiar” as a term, expanding its properties in some cases, e.g. Pact of the Chain:

Pact of the Chain
You learn the Find Familiar spell and can cast it as a ritual. The spell doesn’t count against your number of spells known. When you cast the spell, you can choose one of the normal forms for your familiar or one of the following special forms: imp, pseudodragon, quasit, or sprite.
Additionally, when you take the Attack action, you can forgo one of your own attacks to allow your familiar to make one attack of its own with its reaction.

So the Warlock’s familiar can be an imp, pseudodragon, quasit, or sprite, and it can attack.

“Variant: Familiar” describes additional familiar properties

Notice that imp, pseudodragon and quasit all have the “Variant: Familiar” block and there are no other creatures in the MM with the “Variant: Familiar” block. That block describes additional familiar features: first one is the 1-mile telepathic link, and second one depends on the creature type (for instance, Imp gives its master the Magic Resistance trait). That block does not describe any other familiar’s properties. It doesn’t explain anything that is already described in the Find Familiar spell, and it still uses the “familiar” term. It is logical to assume that it is the same “familiar” as the PHB describes.

From my understanding, “Variant: Familiar” expands base familiar description, like the Pact of the Chain does:

  1. General familiar properties are given in the Find Familiar spell description.

  2. If the spellcaster is a Warlock and they chooses the Pact of Chain feature, the familiar properties are expanded, giving more potent familiar as a result.

  3. The familiar properties might be expanded even more, if the familiar is Imp/Quasit/Pseudodragon and the DM uses the “Variant: Familiar” optional rule.

It goes well with the “specific beats generic” rule:

  • Familiar can’t attack (generic) but it can with the Pact of Chain (specific).

  • The spellcaster can share familiar’s senses within 100 feet (generic), or 1 mile with several kinds (specific), providing the DM uses the variant rule.

So why in fact does it not?

Several answers (like this one) assume that in fact “Variant: Familiar” rule describes a sort of “another” familiar with completely different properties. It can attack, but can NOT deliver spells, and if it dies — it’s gone forever. How to obtain this familiar remains a mystery. It is still called a “familiar” though.

That seems purely homebrew for me, but is treated as official rulings. It is also being said these creatures cannot be found with the Find Familiar spell. What is the source of this assumption? What are the properties of this “another familiar”, and where they are described?

@SevenSidedDie mentioned that all “Variant: X” in the MM mean a somewhat special creature:

… a variant is just an alternative stat block for a given creature, so that it works slightly differently from the common variety of that creature.

The idea of “variants” is that, just like not every human is identical

A familiar variant of a creature is just the stat block to use for a creature that has somehow agreed to serve as a familiar for a spellcaster.

That actually supports the idea that Warlock should have the magic resistance trait from the imp, not contradicts it.

The Warlock summoned an imp as a familiar — therefore, that particular imp agreed to serve as a familiar. The DM uses the variant rule. Why shouldn’t the imp give the magic resistance trait, as the “Variant: Imp Familiar” describes?

It is just a spirit that takes a particular form

That answer explains it that way:

the Warlock’s familiar isn’t any sort of pseudodragon, let alone one with the variant. It’s a spirit that takes the form of a pseudodragon

But that reasoning does not work with the imp. Find Familiar implies that the imp familiar is an imp:

the familiar has the Statistics of the chosen form, though it is a celestial, fey, or fiend

So a fiend can be a familiar, and Imp is a fiend.

Can’t change default browser in Lubuntu 19.04

I recently installed Lubuntu 19.04 (LXQt) and I want to change the default browser from Firefox to Google Chrome. However, even though I set Chrome as the default browser in the settings, Firefox still remains the default whenever I try to open html files from my computer (or click on any links).

I’m not sure why the OS is not listening to my instructions. I’ve set chrome as the default browser in both the “Session Settings” menu, and the “update-alternatives.” I’ve even changed it manually in /usr/share/applications/defaults.list, and it still won’t change. No matter what I do, Firefox remains the default browser.

Any idea what’s going on ?

PS: I know I could probably solve the problem by removing Firefox, but I don’t want to do that. I want to keep both browsers installed, just have Chrome be the default.

Can’t update Ubuntu. Tried (and failed) to install vulkan and crippled myself in the process

It turns out that my GTX geForce 570 doesn’t support vulkan… but I had been meddling with my drivers a lot before figuring that out.

As it stands, my computer’s screen resolution is set wrong, I can’t run openGL anymore, and my GPU isn’t listed under “Settings” > “About” > “Graphics”


If I look at the active driver under “Software & Updates” > “Additional Drivers”, not only is 390 listed and selected, but it won’t let me choose any other driver (if I try choosing Nouveau or 340, when I “apply changes” it pauses and then 390 becomes active once again. Rebooting doesn’t help). This is still the case, even if I run

sudo apt-get purge nvidia* 

And finally, I can’t receive updates. The auto-updates have a number of items queued up, but if I try to update any of them, I get an error window which reads:

Check if you are using third party repositories. If so disable them, since they are a common source of problems. Furthermore run the following command in a Terminal: apt-get install -f Transaction failed: The package system is broken  The following packages have unmet dependencies:  libnvidia-ifr1-390: Depends: libnvidia-gl-390 but it is not installed libnvidia-ifr1-390:i386: Depends: libnvidia-gl-390 but it is not installed nvidia-driver-390: Depends: libnvidia-gl-390 (= 390.129-0ubuntu0~gpu18.04.1) but it is not installed                    Depends: nvidia-dkms-390 (= 390.129-0ubuntu0~gpu18.04.1) but 390.129-0ubuntu0~gpu18.04.1 is installed                    Depends: nvidia-kernel-source-390 (= 390.129-0ubuntu0~gpu18.04.1) but 390.129-0ubuntu0~gpu18.04.1 is installed                    Depends: libnvidia-compute-390 (= 390.129-0ubuntu0~gpu18.04.1) but 390.129-0ubuntu0~gpu18.04.1 is installed                    Depends: nvidia-compute-utils-390 (= 390.129-0ubuntu0~gpu18.04.1) but 390.129-0ubuntu0~gpu18.04.1 is installed                    Depends: libnvidia-decode-390 (= 390.129-0ubuntu0~gpu18.04.1) but 390.129-0ubuntu0~gpu18.04.1 is installed                    Depends: libnvidia-encode-390 (= 390.129-0ubuntu0~gpu18.04.1) but 390.129-0ubuntu0~gpu18.04.1 is installed                    Depends: nvidia-utils-390 (= 390.129-0ubuntu0~gpu18.04.1) but 390.129-0ubuntu0~gpu18.04.1 is installed                    Depends: xserver-xorg-video-nvidia-390 (= 390.129-0ubuntu0~gpu18.04.1) but 390.129-0ubuntu0~gpu18.04.1 is installed                    Depends: libnvidia-cfg1-390 (= 390.129-0ubuntu0~gpu18.04.1) but 390.129-0ubuntu0~gpu18.04.1 is installed                    Depends: libnvidia-ifr1-390 (= 390.129-0ubuntu0~gpu18.04.1) but 390.129-0ubuntu0~gpu18.04.1 is installed                    Depends: libnvidia-fbc1-390 (= 390.129-0ubuntu0~gpu18.04.1) but 390.129-0ubuntu0~gpu18.04.1 is installed 

I thought I had purged 390? Please help!

I can’t install Ubuntu because of a problem related to partition alignment?

The hard disk of my computer failed, so I bought a new external hard disk, to install Ubuntu on it, and let me use my computer.

I have experience installing Ubuntu in a USB flash memory,

So I followed those steps and everything was going fine until in the window of partition menu I pressed the “Install Now” button.

Data: My new HDD is of one tera, “Adata” is the brand, it is connected by a USB cable.

It appeared the following warning:

The partition /dev/adb5 assigned to / starts at an offset of 2048 bytes from the minimum alignment for this disk, which may lead to very poor performance. Since you are formatting this partition, you should correct this problem now by realign the partition, as it will be difficult to change later, to do this go back to the main partition menu, delete the partition, and recreate it in the same position with the same settings. This will cause the partition to start at a point best suited for this disk.

There were also three buttons: “x”, “cancel” and “accept”. Whichever I click on it returns me to the partition menu.

I do as the message says: I erase all the partitions and created a new one using it as / but that doesn’t solves the problem, and the warning appears again, I do not know what I am doing wrong.

Using the program gparted is not helping nor working at all.

I would like to install it although it would have a low performance, but it doesn’t let me.

I’ve been also creating two or more partitions, for example I created one of the size of half of the disk and the second of the rest of the size, this changes the offset bytes number that appears in the warning, but that does not solve the problem.

can’t launch matlab after activation ubuntu 18.04 Licensing error: -8,523

wided@wided:/usr/local/MATLAB/MATLAB_Production_Server/R2015a/bin$ sudo ./matlab License checkout failed. License Manager Error -8 Make sure the HostID of the license file matches this machine, and that the HostID on the SERVER line matches the HostID of the license file.

Troubleshoot this issue by visiting:

Diagnostic Information: Feature: MATLAB License path: /home/wided/.matlab/R2015a_licenses:/usr/local/MATLAB/MATLAB_Production_Server/R2015a/licenses/licen se.dat:/usr/local/MATLAB/MATLAB_Production_Server/R2015a/licenses/license_wided_161052_R2015a.lic Licensing error: -8,523. wided@wided:/usr/local/MATLAB/MATLAB_Production_Server/R2015a/bin$