I would like to install Kubuntu 26.04 on my Acer Swift SF714-52T (2019) that is currently running Linux Mint.

I created a bootable USB on a Windows desktop using Rufus.

The first time I tried to install it, I successfully reached the GUI installer, and completed all the steps up to indicating my username, etc. At this step, the screen froze, and my computer rebooted.

Now, every time I try to install it, I get a kernel panic: VFS unable to mount root fs on unknown-block(0,0) error.

Secure Boot is disabled; I tried to create the USB image with almost every possible option in Rufus (and with balenaEtcher and the Linux Mint disk manager...). I tried safe mode, but I get the same result. I also tried Kubuntu 24.04.

Additionally, I tried installing Ubuntu 26.04 instead, but I get stuck with a GRUB terminal (not sure it is called this way).

I use an Asus Vivobook 15. There is a sign on fn button which says fn+esc. This combination switches from fn keys to let me use directly the volume and other function keys on fn buttons. The problem is Ubuntu always forgets if i switch to multimedia keys after i turn off the laptop. I checked the bios settings and there is only one option for it which just turns off the ability to switch between the two. Is there any other solution?

When i use two finger scroll on my laptop sometimes i get unwanted clicks. Maybe the tap and drag and tap to click functions cause the problem but i don't want to turn them off. Is there any option to make a delay while two finger scrolling and clicking or any other solution?

Cannot restore files in a Deja-dup v50 Archive 26.04 generated from same on 26.04.

My understanding is that you now cannot restore files directly from nautilus. However, when I attempt to restore a file, I select my archive (from Deja-dup archive selection) and it goes into nautilus. Is this right? It is a file selector of some sort, anyway, but there is no mechanism to initiate a restore. Right and left click does not reveal anything and I cannot see any more buttons

I use a 24.04 and 26.04 with a common /home. So when it was installed on 26.04 it would have inherited the 24.04 customization files if there are any. I know there is something in `~/.cache` but I couldn't identify anything relevant to this.

I have also looked in dconf editor and I couldn't find anything relevant in there.

I now assume that Deja Dup v50 is not compatible with Deja Dup (current version in 24.04) as when I logged into 24.04 it could not identify any archives at all. I did check it was pointing to the same place as in 26.04.

Questions. Can you fix the restore?

Should I keep 24.04 and 26.04 completely separate? Note: I suspect the two versions are sharing the setup data that dconf editor is pointing to which will make this a little tricky.

System Details Report
  Report details
    Date generated:                              2026-06-08 18:51:15
      Hardware Information:

      Hardware Model:                              Advent DT4102
      Memory:                                      8.0 GiB
      Processor:                                   Intel® Pentium® G2030 × 2
      Graphics:                                    Intel® HD Graphics 2500 (IVB GT1)
      Disk Capacity:                               2.0 TB
      Software Information:

      Firmware Version:                            4.6.5
      OS Name:                                     Ubuntu 26.04 LTS
      OS Build:                                    (null)
      OS Type:                                     64-bit
      GNOME Version:                               50
      Windowing System:                            Wayland
      Kernel Version:                              Linux 7.0.0-22-generic

Thanks for any help given.

My MFA fails via GUI updates, but it runs fine from the terminal.

Terminal output:

steve@udesktop:~$ sudo apt update
[sudo: authenticate] Password: 
[sudo: authenticate] Verification code: 
Hit:1 http://us.archive.ubuntu.com/ubuntu resolute InRelease
Hit:2 http://us.archive.ubuntu.com/ubuntu resolute-updates InRelease
Hit:3 http://us.archive.ubuntu.com/ubuntu resolute-backports InRelease
Hit:4 http://security.ubuntu.com/ubuntu resolute-security InRelease
All packages are up to date.
steve@udesktop:~$

Adding Ubuntu Pro setup:

It fails MFA every time:

I have removed the Google Authenticator MFA and added Google Authenticator MFA, but I get the same issue.

I had no issues on the previous version. I just upgraded to 26.04.

I've tried several methods but not sure:+

1 if the boot usb is ok. (Used BalenaEtcher)

2 if I'm using the right process for this pc.

How do I check the boot USB?

What's a process that works?

Thanks in anticipation

Trevor

I'm using Openoffice since about 30 years. At the time it was called Staroffice. As my Laptop is not able to run win11, Finaly I took the opportunity to replace win10 with ubuntu 24.04.04.

Libreoffice is included with this version. But I don't like the user interface of Libreoffice. It's very scattered. I really prefer Openoffice, because it's simple and clear.

Question one: Is there a possibility with Libreoffice to select a kind of simpler user interface as OpenOffice is using. In this case I would mind to change, even than I think Libreoffice is suffering of code bleeding in an unsane manner!

Question 2 if Q1 is not possible, I will stick to Openoffice. I feel confortable with it. There is only one strange behavior. OpenOffice is 32 bit. And until now for this it required 32 bit Java as JRE 8. Hence I installed the jre 8 version for linux. It is there, and being in the jre/bin directory I get the rigth version. But, for development I use Java 26! normal 64bit version. So if I try to select java within Openoffice it recognize only this version 26 or 17 which is also still on the computer. But what ever I try to make Openoffice understand to select the Version 1.8 JRE, it tells me. No valid java found in the given directory! Even if I delete any selection, 26 or 17 is offered to select automatically and immediately! The question is would OpenOffice nevertheless work with one of those 64bit version, why OpenOffice tells me so stubborn no valid Java program found? I set it within /etc/alternatives, and in the path, and in the path of Openoffice, etc.! always no java shown, and not possible to select, apart the 64bit versions of course!

Booted from USB drive, selected "Try Kubuntu", ran the installer, chose "Normal Installation", selected SSD, chose "Erase disk", checked "Encrypt system", entered encryption password, and continued with the rest of the installation process.

Towards the end of the installation (feels like towards the end, although I'm not sure if it leaves something out), the installer shows an error message "could not close encrypted partition on the target system". However, after closing the installer and manually rebooting, the system seems to be working. But I can't be sure if something is broken somewhere.

I later tried the same installation steps inside VirtualBox, and it works just fine. It's only on my laptop where this error shows. What should I do? Is it safe to continue using it despite the error and "failed" installation?

I had installed Jellyfin and tvheadend to set up a media server on my Ubuntu Server. They are taking up too much CPU resources and want to go a different direction. I cannot get them uninstalled, it looks like a s6 tree is starting them every time I reboot. I need some guidelines how to stop this

I recently upgraded to Déjà Dup 49 and noticed that the restore workflow seems to have changed compared to older versions.

In previous versions, I could navigate to a specific folder path and then browse the available backup versions while remaining in that folder. This made it easy to inspect multiple snapshots and find the version I wanted.

In Déjà Dup 49, the workflow appears to be reversed:

First select a backup date. Then navigate through the folder hierarchy to the desired path.

The problem is that if I want to inspect a folder across many backup dates (for example, 10 different snapshots), I have to repeatedly:

go back, select another date, navigate through the same folder tree again.

This feels much less efficient than the previous workflow where I could stay in the folder and move between backup versions.

My questions are:

1. Is there an option in Déjà Dup 49 to restore the old browsing behavior?
2. Is there another way to efficiently browse multiple versions of a specific folder without repeatedly navigating the directory tree?
3. Was this change intentional, and if so, what was the rationale behind it?

In addition, I have a large collection of existing backups that were created by Déjà Dup using Duplicity. If the old behavior is no longer available, are there any alternative GUI front-ends that can browse and restore existing Duplicity backup archives?

I'm specifically looking for a graphical application that is backward-compatible with existing Duplicity backup repositories, since I do not want to recreate years of backups from scratch.

I'm using Ubuntu and Déjà Dup 49.0.

Any suggestions would be appreciated.

I use MystIQ to convert videos to MP4. It works great most of the time, but on some videos (usually .mkv format) it doesn't convert the sound correctly. I open MystIQ up, go to add a file, then select the file and then select the directory where to put it and then hit "convert". It gets the video with the music track, but it doesn't get the voice track. Is there some setting that I need to change, or maybe there's another app that works better? From the comments I have received, I guess you are supposed to select the audio file? I just select a video file and then select 'convert'. Guess that isn't enough.

working with any kind of external device (usb drive, monitors, hubs, keyboards, mouse, cameras, anytthing at all, apparently ubuntu cannot handle things that need to connect to any laptop port) etc) is unreliable, unstable, and downright useless

USB drives randomly unmount/ straight up don't mount for no good reason. and randomly decide to stop working altogether

external monotirs rarely work, are never (re)detected reliably, and randomly stop working.

even when they work, unplugging the laptop means that it will never work again with anything else until force restarted, and even then there is a 80% chance that the whatever external device is connected will never work without apparently reinstalling the whole OS, which is ridiculous

devices rarely work, and when they do, is never consistently, or reliably. connecting a keyboard means that it takes at least 2 seconds for it ty type a single character, assuming it does not freeze altogether and crash.

Installing/reinstalling/updating/upgrading is useless, trying any of these things just means that the whole setup becomes even worse, it is nothing but a waste e of time.

This renders ubuntu useless to me, is there a way to fix all these bugs and constant malfunctions? Any single walthrough/troubleshooting guide i have followed has proven useless. I have always known that ubuntu is terrible with external devices, but this the worst I have ever experienced.

Sinds kort staan de letters van sommige websites in witte vlakken. Ik gebruik Waterfox versie 6.6.14. (64bits) als standaardbrowser. Ik heb updates doorgevoerd, maar hielp niet. Daarna de browser verwijderd en opnieuw geïnstalleerd, vandaag, 8 juni 2026, hielp ook niet. In andere browsers worden deze websites normaal weergegeven zonder witte vlakken. Zie foto's voor voorbeelden. Ik gebruik een MacBook Air met MacOS Montery met veel plezier. Hoe kan ik dit veranderen naar normale weergave?

I could install on Ubuntu Server Cubic for creating personalized ISOs, but when trying to do the same in another machine just with Ubuntu, an error says: problem with dependencies of the deb package systemd-container.

The main error appears when trying on the bash:

sudo apt install cubic:   Error:"cubic depends on systemd-container (>=237)

I downloaded a deb package (systemd-container) and installed it with Gdebi manager on Ubuntu Server. It worked well.

On Ubuntu, the Gdebi manager shows:

Error: it is not able to satisfy the dependency: 
  libsystemd-shared (=255.4-1Ubuntu8.15)

• I run on bash the most common commands to fix it with no positive results.

• I also tried with Synaptic Manager. An error says: "You have retained broken packages".

• I also tried with Snap Store and the app can not be installed.

versions 20+ hardware needed? I've been trying to install via a USB for hours, and it just locks up at a black screen with a blinking underscore character. It never goes anywhere. How do I know if a Rufus USB stick will work and if the machine just isn't going to do an Ubuntu live USB install?

I just installed Ubuntu 26.04. I am new to all this. I have tried two different tablets, and both had the same issue. When I tried it shows the pointer moving, but I can't click on icons or draw. This is for both Krita and Open Toonz. I hadedownloaded the driver for my Huion Kamvas pro 16. (I also tried my Wacom Intuos pro too). I searched and people blamed a new xwayland update, a few people said it broke it, they rolled back the update. I only have the newest edition. Is there something I can do? Or just wait until they do a new update to resolve the issue?

When I test the tablet and pen in the test area on Ubuntu desktop tablet area properties, it works, the pressure sensitive also works.

Some apps, notably the LibreOffice suite and Firefox, seem to be unable to access files in my .local folder. Other apps, such as Image Viewer, Obsidian, and Vim are able to open them without issue.

This is particularly strange since, as of just over a month ago, I was able to access them without difficulty. I'm not sure when the changeover happened since I wasn't accessing the files in that time. I have also changed internet (provider, router, etc.) since then, but the files that I am looking at are stored on pCloud's servers (and then encrypted by Cryptomator) so I don't know if that factors in.

I wonder if it has something to do with permissions as the applications that I think of as more baked-in (e.g. Text Editor and Vim) seem to be capable of opening the files whereas my additions (e.g. LibreOffice Writer) cannot (as tested on the same .txt file), but I really don't know enough to be confident.

I am currently unable to connect to any Canonical name server from a server that has been running and regularly installing updates for over a year.

$ dig canonical.com
;; communications error to 127.0.0.1#53: timed out

; <<>> DiG 9.18.39-0ubuntu0.22.04.3-Ubuntu <<>> canonical.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 63336
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: bf985d2b0d9a5dc2010000006a2561614f29acbfa3607ed5 (good)
;; QUESTION SECTION:
;canonical.com.         IN  A

;; Query time: 4992 msec
;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
;; WHEN: Sun Jun 07 05:17:37 PDT 2026
;; MSG SIZE  rcvd: 70

dig ubuntu.com
;; communications error to 127.0.0.1#53: timed out

; <<>> DiG 9.18.39-0ubuntu0.22.04.3-Ubuntu <<>> ubuntu.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 50583
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: 84ddd6bff6324a85010000006a256152cb1a1628a3bb7127 (good)
;; QUESTION SECTION:
;ubuntu.com.            IN  A

;; Query time: 4996 msec
;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
;; WHEN: Sun Jun 07 05:17:22 PDT 2026
;; MSG SIZE  rcvd: 67

$ dig ppa.launchpad.net
;; communications error to 127.0.0.1#53: timed out

; <<>> DiG 9.18.39-0ubuntu0.22.04.3-Ubuntu <<>> ppa.launchpad.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 22613
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: fb7e9b492b13c8f3010000006a2561fc0a1aadf66f6769da (good)
;; QUESTION SECTION:
;ppa.launchpad.net.     IN  A

;; Query time: 4996 msec
;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
;; WHEN: Sun Jun 07 05:20:12 PDT 2026
;; MSG SIZE  rcvd: 74

Just for reference:

dig askubuntu.com

; <<>> DiG 9.18.39-0ubuntu0.22.04.3-Ubuntu <<>> askubuntu.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63171
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: c734f19287eea80a010000006a25613ef05f7ff9ad6a7c55 (good)
;; QUESTION SECTION:
;askubuntu.com.         IN  A

;; ANSWER SECTION:
askubuntu.com.      277 IN  A   198.252.206.1

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
;; WHEN: Sun Jun 07 05:17:02 PDT 2026
;; MSG SIZE  rcvd: 86

$ ping -c 10 198.252.206.1
PING 198.252.206.1 (198.252.206.1) 56(84) bytes of data.
64 bytes from 198.252.206.1: icmp_seq=1 ttl=61 time=0.263 ms
64 bytes from 198.252.206.1: icmp_seq=2 ttl=61 time=0.317 ms
64 bytes from 198.252.206.1: icmp_seq=3 ttl=61 time=0.266 ms
64 bytes from 198.252.206.1: icmp_seq=4 ttl=61 time=0.306 ms
64 bytes from 198.252.206.1: icmp_seq=5 ttl=61 time=0.295 ms
64 bytes from 198.252.206.1: icmp_seq=6 ttl=61 time=0.294 ms
64 bytes from 198.252.206.1: icmp_seq=7 ttl=61 time=0.366 ms
64 bytes from 198.252.206.1: icmp_seq=8 ttl=61 time=0.297 ms
64 bytes from 198.252.206.1: icmp_seq=9 ttl=61 time=0.264 ms
64 bytes from 198.252.206.1: icmp_seq=10 ttl=61 time=0.289 ms

--- 198.252.206.1 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9197ms
rtt min/avg/max/mdev = 0.263/0.295/0.366/0.029 ms

It seems to be specific to one server. The server does not exhibit any signs of having been compromised and is updated regularly, though currently it is impossible to update because, by all outward appearances, Canonical has blocked my IP address from accessing their name server.

$ dig ns1.canonical.com
;; communications error to 127.0.0.1#53: timed out

; <<>> DiG 9.18.39-0ubuntu0.22.04.3-Ubuntu <<>> ns1.canonical.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 44028
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: 67b8ecec6a690c94010000006a2563010c14125b277b79a9 (good)
;; QUESTION SECTION:
;ns1.canonical.com.     IN  A

;; Query time: 4992 msec
;; SERVER: 127.0.0.1#53(127.0.0.1) (UDP)
;; WHEN: Sun Jun 07 05:24:33 PDT 2026
;; MSG SIZE  rcvd: 74

$ ping -c 10 185.125.190.65
PING 185.125.190.65 (185.125.190.65) 56(84) bytes of data.

--- 185.125.190.65 ping statistics ---
10 packets transmitted, 0 received, 100% packet loss, time 9202ms

$ tracepath 185.125.190.65
 1?: [LOCALHOST]                      pmtu 1500
 1:  [redacted ISP address]                                0.183ms 
 1:  [redacted ISP address]                                1.537ms 
 2:  172.18.0.29                                           1.138ms 
 3:  no reply
 4:  104.23.203.14                                         0.326ms 
 5:  162.158.244.69                                        0.467ms 
 6:  no reply
 7:  no reply
 8:  no reply
 9:  no reply
10:  no reply
11:  no reply
12:  no reply
13:  no reply
14:  no reply
15:  no reply
16:  no reply
17:  no reply
18:  no reply
19:  no reply
20:  no reply
21:  no reply
22:  no reply
23:  no reply
24:  no reply
25:  no reply
26:  no reply
27:  no reply
28:  no reply
29:  no reply
30:  no reply
     Too many hops: pmtu 1500
     Resume: pmtu 1500

Note that other servers using the same redacted ISP address and the ISP tech support successfully connect to the Canonical IP addresses and name servers.

Are there any options for me here?

I have other Ubuntu Servers that do not have this problem.

This issue is not caused by last month's outage.

In Ubuntu versions previous to 26.04 the default mount point for automatically mounted removable media (by GNOME?), like USB drives, external HDDs, SD cards, etc., was something like /media/<username>/<disk_id>/. Now, after upgrade to Ubuntu 26.04, it seems that the location /run/media/<username>/<disk_id>/ is used instead.

The top-level /media/ directory still exists and it is still populated with user directories from past mounts.

Update: There is a short explanation for the "why" this change has happened at the Release Notes for Ubuntu 26.04 and in some answers given below.

My question is: What will happen to the /media/ directory? Is the /media/ directory still created in fresh Ubuntu 26.04 installs? I had upgraded my system to 26.04 from 25.10 and I don't know whether it is still an essential directory or can be safely deleted.

Screen sharing when using Microsoft Teams from a browser (firefox, in this case) used to be simple, but since Ubuntu 26.04 uses GNOME without X11 support, only Wayland, the situation changed. Wayland is more secure than X11 and makes it harder for one app access the contents of other apps windows.

If I try to share the screen in Firefox (149.0.2, distributed with Ubuntu), the following happens: first, a dialog appears:

I click on "Allow", select the display to share, briefly a screen sharing icon appears in the GNOME toolbar:

and then disappears. Screen is not shared. The same thing happens if I try to share a window, even a Firefox Window. How can you share a screen with Teams in Firefox on Ubuntu 26.04?

I am unable to run Ubuntu properly with my NVIDIA RTX 5050 GPU. Both Ubuntu 24.04 and Ubuntu 26.04 result in a black screen when the NVIDIA driver is enabled. The system only works using nomodeset, but then GPU acceleration is unavailable and resolution is limited (around 720p).

I can only install and boot the system using GRUB modification (nomodeset), but enabling NVIDIA drivers causes a black screen after boot.

I have tested multiple NVIDIA driver versions (570, 580, 595), but all result in the same issue.

System information

• GPU: NVIDIA RTX 5050

• CPU: AMD Ryzen 5 5500

• RAM: 8GB DDR4 3200MHz

• Storage: 256GB NVMe SSD

• Motherboard: Gigabyte B550M-K

Steps already tried

1. Boot with nomodeset (only working method)

At GRUB:

• Press e

• Add:

nomodeset

Then boot with Ctrl + X

2. Install NVIDIA drivers

sudo apt update
sudo apt install nvidia-driver-580

Also tested:

sudo apt install nvidia-driver-570
sudo apt install nvidia-driver-595

3. Remove broken NVIDIA installation (via chroot / recovery)

sudo apt purge '^nvidia'
sudo apt autoremove --purge
sudo rm -f /etc/X11/xorg.conf
sudo rm -f /etc/modprobe.d/nvidia*
sudo update-initramfs -u
sudo update-grub

4. Update kernel / system packages

sudo apt update
sudo apt upgrade
sudo apt install linux-generic-hwe-24.04

Current result

• System boots only with nomodeset

• Without nomodeset, black screen occurs immediately after GRUB

• NVIDIA drivers install successfully but break display on reboot

• No GPU acceleration is working

Request

Looking for a stable solution to run RTX 5050 properly on Ubuntu (kernel/driver configuration fix or compatibility workaround).

I used Obsidian software on ubuntu 25.10. I did a test before production with 26.04. I install obsidian just after installing os; obsidian is ok; I reboot ubuntu and obsidian does nothin when I launch it; do you have an idea?

I used to use VNC but it does not work with Wayland. How can I connect to my Kubuntu 24.04 (Wayland) computer from another computer in another network so that I can access its GUI, just like in VNC?

I use Xubuntu 24.04.02 LTS on a desktop computer with monitor connected with HDMI and I observe a very strange and confusing behavior with the lock-screen. I configured Xfce Screensaver in the Xfce Settings to activate after 5 minutes. In the same menu, in the next tab, I activated the Lock Screen to enable with the screensaver.

When the computer is idle for 5 minutes and the display is switched on, the screensaver starts. When I then press a key or move the mouse, I see a lock-screen, where I have to enter my password to unlock the session. Until here, everything is according to my expectation.

But often I switch off the display and go somewhere. When I come back, switch on the display and press a key or move the mouse, I see my desktop. It locks like there is no lock-screen. I can see the mouse cursor, but I can't click anything and it doesn't react to keyboard input. The first times I thought the system was frozen, but then I found out that I can blindly type in my password and the system is unlocked.

How can I fix or debug it?

I am new to Linux. I am trying to update Ubuntu (4.15.0-153). When I run sudo apt-get update, I get the following error:

Err:1 http://sg.archive.ubuntu.com/ubuntu bionic InRelease
403 Forbidden [IP: 202.79.184.254 80]
Err:2 http://sg.archive.ubuntu.com/ubuntu bionic-updates InRelease
403 Forbidden [IP: 202.79.184.254 80]
Err:3 http://sg.archive.ubuntu.com/ubuntu bionic-backports InRelease
403 Forbidden [IP: 202.79.184.254 80]
Err:4 http://sg.archive.ubuntu.com/ubuntu bionic-security InRelease
403 Forbidden [IP: 202.79.184.254 80]
Reading package lists... Done
N: See apt-secure(8) manpage for repository creation and user configuration details.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
E: The repository 'http://sg.archive.ubuntu.com/ubuntu bionic InRelease' is no longer signed.
E: Failed to fetch http://sg.archive.ubuntu.com/ubuntu/dists/bionic/InRelease 403 Forbidden [IP: 202.79.184.254 80]
N: See apt-secure(8) manpage for repository creation and user configuration details.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
E: The repository 'http://sg.archive.ubuntu.com/ubuntu bionic-updates InRelease' is no longer signed.
E: Failed to fetch http://sg.archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease 403 Forbidden [IP: 202.79.184.254 80]
E: Failed to fetch http://sg.archive.ubuntu.com/ubuntu/dists/bionic-backports/InRelease 403 Forbidden [IP: 202.79.184.254 80]
E: The repository 'http://sg.archive.ubuntu.com/ubuntu bionic-backports InRelease' is no longer signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://sg.archive.ubuntu.com/ubuntu/dists/bionic-security/InRelease 403 Forbidden [IP: 202.79.184.254 80]
E: The repository 'http://sg.archive.ubuntu.com/ubuntu bionic-security InRelease' is no longer signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

I installed Ubuntu on my Acer Nitro 5 || 8GB DDR4 || 1TB NVME SSD || i5-9300H || 4GB GTX 1650 laptop, replacing Windows.

Switching to Linux I think there are many features that I am unable to use like controlling fans and undervolting as in Windows; so is there any way by which I can get access to such features?

On Ubuntu 18.04 both journald and rsyslog are installed. Both serve the same purpose of collecting log messages and storing them. So we have two programs doing the same work here.

What I could find out is that journald only saves log messages in its own journal files which can be queried with the journalctl command. No readable files are written. Also, journal will always collect log output from all the services that were started by systemd, which should always be all of them because ultimately systemd starts all processes even from older schemes like init scripts.

Rsyslog also receives log messages, through some socket that works like syslog has worked the past 50 years or so. Applications have to send their messages to that socket and rsyslog will receive them. Not sure how journald actually receives anything. Then rsyslog forwards these received messages into different readable files as per its configuration.

In Ubuntu, both are installed but do not seem to be connected. At least rsyslog does not load the "imjournal" module with which it could "read" log messages from journald. I don't understand how rsyslog (actively) reads anything, I thought it only (passively) receives messages. But it's not using that anyway.

The file /var/log/syslog contains largely the same content as shown by journalctl, just the output from sudo is missing in the file. But I haven't compared it all.

So how does this work? Who sends log messages to where and who receives them and where are they forwarded to? If both destinations are filled, does every application have to send messages to both syslog and journald separately? If they are interconnected, why are no messages duplicated? Are they filtered out again? Which location is more complete and where should I look if I want the complete picture?

If any of this has changed in newer versions of Ubuntu, I'd also be interested in that, as I'm going to switch an older server to 20.04 next year.

Edit: Here are some more resources on the topic:

• [Interaction of Rsyslog and Journal (Red Hat sysadmin guide)](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/ch-viewing_and_managing_log_files#s1-interaction_of_rsyslog_and_journal
• imjournal (rsyslog documentation)
• rsyslog journal integration, Video presentation by the rsyslog author
• The syslog system call
• Coexistence with systemd (rsyslog documentation)

All of this information leaves me a bit confused. It seems like journal receives all syslog data from the system call in the first place (my /dev/log points to /run/systemd/journal/dev-log), and rsyslog fetches it from journal through a socket that looks like the socket that is had used before there was journal (possibly /run/systemd/journal/syslog, implicitly used if it sees systemd around). Then rsyslog can do all its advanced log processing (including writing the legacy /var/log files). If I don't need any of that magic, I might just disable rsyslog. But I'm not sure about that at all!

I'm trying to mount additional hard disk.

lsblk shows /dev/sdf1..3. However, sudo fdisk -l doesn't show /dev/sdf1..3

What is the problem?

I have come to a situation where I have an image in Gimp with multiple layers. Now, I want to export every single layer as an individual image (PNG format preferably) automatically to a folder somewhere.

Is this possible?

The long method: Hide all layers except one, crop the section you want, export image. Hide saved layer, unhide another one, crop section, export. Repeat. Kinda cumbersome for an image with about 20 layers.

I followed this tutorial to set start Thunderbird in minimized mode at startup, but it wasn't helpful.

After following the instructions, I could not even start Thunderbird. So I was forced to start TB in safe mode to delete the "FireTray Plugin" and fix this issue. After that it started to work but it deleted all my email accounts and I had to do that chore all over again .

So is there any working way to start Thunderbird minimized on start-up?