Latest Ubuntu related questions

Score: 1
Manuel Jordan avatar
How retrieve or recreate a delete file from the /etc/ssh directory
kz flag

In the /etc/ssh directory exists the following content:

moduli      sshd_config           ssh_host_ecdsa_key      ssh_host_ed25519_key      ssh_host_rsa_key      ssh_import_id
ssh_config  sshd_config.ucf-dist  ssh_host_ecdsa_key.pub  ssh_host_ed25519_key.pub  ssh_host_rsa_key.pub

I can see practically two categories:

  1. public/private keys
  2. configuration files

If any of those files for any of these categor ...

Score: 0
kna0085 avatar
Can't boot windows 10 partition
cn flag

I had a windows 10 installation and a ubuntu 20.04 installation running with grub for a long time pretty well. However, I broke everything when I decided to resize one of the partitions and now grub is only booting Ubuntu installation and windows 10 not anymore even after I did a clean windows 10 installation.

I have installed boot repair and I've tried to fix my issue with different configuratio ...

Score: 0
Guytas avatar
Should I remove Grub from the MBR when using EFI system?
in flag

Not sure why boot-info reports this:

=> Grub2 (v1.99-2.00) is installed in the MBR of /dev/sda and looks at sector 
    2048 of the same hard drive for core.img, but core.img can not be found at 
    this location.

I have an iMac dual-boot with Windows10 and Ubuntu 21.04. The disk is in EFI mode. I've just succeeded having both OS to start with the Grub. But Windows is somehow very sensitive to the ...

Score: 0
pwn16wnd avatar
Black screen with white underscore after compiling and installing new kernel
id flag

I recently installed a custom kernel from http://kernel.org in a virtual machine. However, after successfully compiling and installing the new kernel, it gets stuck at a black screen with a white underscore after booting through the grub menu.

Desktop VM Screenshot

How can I debug this?

Score: 0
user1399099 avatar
What does the output mean mvt-ios pythonstix2 JSON file analysis?
cn flag

I have run decrypted JSON file with pythonSTIX2 as per mvt-ios guide. I now have an output I do not understand. Any suggestions comments much appreciated.

a@a:~/Peg$ mvt-ios check-backup --iocs ~/Peg/+iPhoneSTX ~/Peg/+iPhonejson
11:07:50 INFO     [mvt.ios.cli] Checking iTunes backup located at: /home/a/Peg/+iPhonejson         
         INFO     [mvt.ios.cli] Parsing STIX2 indicators file at path /h ...
Score: 0
sdam1n avatar
Ubuntu 20.04 Crashes
au flag

I recently bought a pc. After installing ubuntu it constantly crashes after about 1 hour. The screen remains frozen. Sometimes pc doesn't restart or shutdown or start. Mainly the gui remains stuck. Then the pc needs to hard reset. I clean reinstalled Ubuntu again but the problem remains the same. During the reinstallation,the installer also crashed once.

I am using an old monitor with hdmi to vga ...

Score: 0
can't enable enp3s0 (ethernet interface) and ethernet wired simply does not work
jp flag

I've started experiencing a weird issue. I'm normally connected via RJ45 but as I write this I was forced to switch to Wifi instead.

So here's the thing, I've noticed that lately when coming back from suspend, I basically had to reboot in order to get Internet connectivity again.

After the second time, I decided to dig why this was happening. So here's what I tried so far:

sudo lshw -C network

Output:

Score: 0
bluetooth headphones won't connect. How can I isolate the problem?
us flag

Bluetooth connection problems seem to be a constant theme here. I'm running Kubuntu 20.04 and I actually had my MPOW headphones working a couple of months ago. Now I can't get them to connect, though they are paired.

There are two possible causes:(a) something is not installed or (b) everything is installed but something is misconfigured. Given the abundance of solutions to this problem that wor ...

Score: 0
Capt. Mustard avatar
Disk size does not match at all (ubuntu/VMWare)
in flag

I setup a ubuntu server on VMWare with 50GB.

Now my ubuntu says I don't have enough space. df -h indeed tells me my ubuntu only has 24G...

buzz@plex-vm:~$ df -h
Filesystem                         Size  Used Avail Use% Mounted on
udev                               1.9G     0  1.9G   0% /dev
tmpfs                              391M   17M  375M   5% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   24G   24G    ...
Score: 0
AlbusMPiroglu avatar
Is this a security backdoor?
pe flag

I just realised nmcli commands don't ask me password for sudo access, but ends up modifying a file under /etc/NetworkManager/system-connections/ which is root-only access.

How is this allowed? What's the mechanism that makes a process change a file that the user doesn't have access to?

Details are, I've got a vpn connection, let's say my-vpn, and run for example:

nmcli c modify my-vpn +ipv4.dns 192.168.1 ...
Score: 1
SCossano avatar
Windows Subsystem Linux cgroup issues with slurmd
id flag

I am trying to add my computer running Ubuntu WSL to a slurm cluster I have, made up of old laptops. And when I run
sudo service slurmd start
it comes back as failed. I checked the /var/log/slurmd.log I get the following output.

[2021-09-07T14:35:43.776] Message aggregation disabled
[2021-09-07T14:35:43.796] error: unable to mount freezer cgroup namespace: Invalid argument
[2021-09-07T14:35:43.7 ...
Score: 1
Juan avatar
Wine doesn't support 32 bit audio editing
al flag

I use Ubuntu Studio 20.04.3 LTS with WineHQ 6.0.1 (to run old MS-Windows native software).

When I use the old (but still so good) Adobe Audition 1.5, I cannot to use 32 bit audio.

I mean, If I converted some audio piece from 16 bit to 32 bit, I just get white noise.

Of course, it is not something related with Ubuntu Studio system because I can use 32 bit audio, so fine, with Audacity and other Linux na ...

Score: 0
Re-register name with DNS after modem reboot
md flag

I have Ubuntu in a VM on a home network connected to the internet by a modem/router that manages the network, providing DHCP and local DNS.

When the Ubuntu VM is booted it becomes accessible by name on the network, somehow registering its name with the modem's DNS.

When the modem plays up and has to be rebooted, the name disappears. The VM reconnects to the router, I can see its MAC address in the c ...

Score: 1
simple mind avatar
Qnap Qsync: how to start the app at boot?
in flag

I have an Ubuntu 20.04 and I have recently installed an app (via the Ubuntu Software Installer) for my NAS called "Qsync" by QNAP, which is working fine.

The issue is that I have to start it manually each time the computer boots.

I have tried to add the app to the startup apps using the Startup Application Preferences but when I click on ADD I am asked to insert a command the call the application, a ...

Score: 2
Dee avatar
I am installing kernel in my ubuntu but getting an error
eg flag
Dee

make[1]: *** No rule to make target 'debian/canonical-revoked-certs.pem' , needed by certs/x509_revocation_list'. STOP. make: ***[Makefile:1851:certs] Error 2

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