I received this message when installing something from the repository:
The software is not from a trusted source.Do not install this package unless you are sure it is safe to do so.
For various reasons we might need to move from FreeBSD (VM-ware) to Ubuntu (KVM).
As we use a lot of large tables with ip addresses stored in textfiles, which we load into FreeBSDs packet filter (pf), we are looking for similar solutions in Ubuntu, if there are any.
The text files contains over 900 000 ip adresses in total, to block.
Is this possible to achieve in Ubuntu with IP-Tables?
If so, what's required and are there any examples?
We are waiting for Ubuntu 26.04 LTS (Resolute Raccoon), and it's going to be shell based web and DB server.
Thanks,
Is it possible to build a user-land apparmor profile? I have an Electron app, and a bunch of users that prefer installing their apps in their home rather than in the root. Unfortunately, running the Electron app requires an apparmor profile because of the sandbox, and I was not able to find a way to build such a profile in user-space, I necessarily have to install something in /etc.
Is it correct that it is basically impossible to install an Electron app without admin access on Ubuntu? :(
I am using Ubuntu for some time, but I am not expert in Linux. I installed FreeFileSync on Ubuntu 24.04 LTS. After the installation I could see many folders on my desktop. How to remove these folders?
I have more than one WiFi adapter installed on my machine. They're always shown in the same order in WiFi settings no matter which one is actually connected. See the picture below.
Is there a way to change the configuration so that the WiFi adapter that is connected to the WiFi network is displayed first in Settings?
CAN SOMEONE PLEASE REMOVE THIS, BECAUSE PEOPLE HERE FEEL OFFENDED BY THIS QUESTION.
I'm trying to install Ubuntu 24.04 (latest) on Lenovo ThinkPad L15 Gen 3 (AMD), but I can't.
I first had Windows 11 and no usb, so I tried grub2win and unetbootin, both failed.
I found a usb stick and ran:
sudo dd if=ubuntu-24.04-desktop-amd64.iso of=/dev/sdX bs=4M status=progress oflag=sync
I entered BIOS and changed secure boot to OFF.
I inserted usb stick and installed by erasing disk. All seems fine.
But after restart into Ubuntu I remove the usb stick and all buttons, all icons, vanishes. i cannot open any programs.
I force power off and back on. Now Windows 11 and Unetbootin comes up.
I restart and enter boot menu. i select Ubuntu, but the screen just flashes, nothing.
This link says my computer is certified to run Ubuntu https://ubuntu.com/certified/202204-30189 so why can't I?
UPDATE:
The Ubuntu installer installed on the usb stick, not on the sdd. More stupid software cannot possible exist
Whenever I copy a text or image and try to paste into an app (search bar or anyc place), the app I want to paste into freezes and the only solution is to force quit that app. Once this problem starts the only way to to stop it temporarily is to restart Ubuntu. Are there any solutions to this?
These are my Ubuntu and PC details;
I would like to know the experience of installing the release candidate for 26.04 LTS on a Lenovo ThinkBook. Would this make sense to do on a new laptop, and subsequently upgrade to the final release version after 23-Apr, using apt?
The laptop works fine with a 24.04 Live boot disk.
I'm using an Aspire 5742. App Center fails to load in Ubuntu 24.04.
ps -ef nets this line.
/usr/libexec/deja-dup/deja-dup-monitor.
I tried to reinstall Ubuntu 24.04 several times with the same result. Other apps installed during the installation are present and work. Only the App Center spends some time showing signs of "disk activity" and then nothing happens. I've been a happy Ubuntu user for many years, but i386 support seems limited.
I volunteered to set up a PC for my niblings to learn to code and so on. Windows sucks and I wanted to start the kids off right.
I had it installed and running fine, was up to installing Minecraft and Blender, but the WiFi was bad, so I moved the setup from my bedroom floor to the lounge by the router. After that turning it on left only a blank screen. I plugged the HDMI directly into the GPU and that gives me the GRUB menu, but when I select boot Ubuntu it doesn't work, and boot in recovery mode gives a wall of text that I don't understand and nothing else.
The only thing on the screen that appears to me to not be loading correctly is: nvme nvme0: missing or invalid SUBNQN field, but I don't even know if that's related and googling from there gets people talking in acronyms which I don't understand.
The PC is a refurbished computer from a reputable computer shop, and I replaced (not partitioned) Windows 11 and installed Ubuntu last month. I understand a new one is out this month, but I didn't want to wait. Please tell me what to do.
I have a Chromebook Intel i5 Flex pad the board name is TAEKO and I used the Chromebox fw utility script to flash Ubuntu onto my Chromebook which I have done before. The setup went smoothly except for a curtin install error which is pretty standard and an easy fix. After I rebooted my computer, the desktop froze almost immediately, the touchpad wasn't working, the keyboard wasn't working, and the only way I could interact with it was by holding down the power button for 10+ seconds.
I rebooted a few more times and every time my laptop would freeze after anywhere from a few minutes to a few seconds. I have tried to add nomodeset parameter to the Linux parameter in the Ubuntu installation, but that did not fix it and I have tried sudo ubuntu-drivers autoinstall, but that didn't fix it either, so I don't think it's a driver issue. I am also having trouble getting into grub as it keeps giving me some sort of error message and then taking me back to the desktop, so it's difficult to troubleshoot.
Basically there is a problem with my DisplayLink monitor after I upgraded my Ubuntu to 25.10. There is a weird slowdown/flickering on both my second and main monitor (connected via HDMI). It occurs while randomly using the OS, but especially while I'm dragging windows from my main screen to the DisplayLink one. The system is not unusable while it occurs, but it is certainly annoying.
I can record the glitch and upload it if it would be helpful.
Is there any way to fix this?
My system's specs are not an issue, because everything works just fine when a normal monitor (my GF's) is connected via DisplayPort. Everything was also A-OK on Windows 10 and before the Ubuntu upgrade (24.??).
I tried all the solutions that are available on the net (i.e. those that I could find using Google/DDG, etc.). The only thing I haven't tried is installing Asus MB168B's drivers for Linux, because they aren't hosted on Asus's website anymore.
System:
The system crashes at boot without the nomodeset kernel parameter. With nomodeset system is stable but running in low resolution without GPU acceleration.
I've tried:
Persistent secondary issue: Invalid environment block error on every boot.
It's odd that I have to unplug the power cable from the socket to initiate power on. Unplugging the barrel connector at I/O does not allow the power button to function. Do you have any ideas?
I am using Ubuntu Studio 24.04.4.
Is it possible to assign a different IP for each user logging in into my laptop ?!
For instance, when userA logs in, the IP of my laptop would be 192.168.178.10
and when userB logs in, the IP of my laptop would be 192.168.178.20
That would be very handy since I am using the "filter" function of my FritzBox in order to filter websites accessed by my laptop...
Best
Vincent
I have recently reconfigured my sendmail for TLS. As part of the validation I have used checktls.com which throws up a few issues. The first concerns a certificate failure which I have been advised can be ignored due to some comments in comp.mail.sendmail newsgroup. The second (which doesn't cause a failure) shows the email to respond to is incorrect ie "admin@mydomain". I have also noted sendmail-{server|client}.cfg files in /etc/mail/tls which would seem to allow the configuration options I need to correct the issues. However, it appears that the certificates are created at install time and I cannot find any information on how to reconfigure them according to these cfg files? Can anyone advise/help me please, as I would like to make everything as clean as possible as I try to convince gmail to unblock our domain due to "poor reputation"?
I do already have spf,dmarc and dkim records, and have recently ensured that my mx server has correct forward and reverse dns ercords (one of the postmaster tools compliance requirements!).
TIA Paul
Title says it all: Has rdist disappeared from 24.04?
I use rdist for a local backup scheme.
I have an Orange PI RISC v2 single board computer. This uses an Ubuntu RISC V OS. I am looking for IPTV players that work on RISC V Ubuntu?
I am on Ubuntu 24.04. After a recent update, some of my files, including:
png image generated by one of my codes
Screenshots taken
Clean pdf files downloaded
have no preview thumbnails that were downloaded after the update was installed.. Older ones are still being displayed correctly. I tried the following commands:
sudo rm -rf \~/.thumbnails/\* \~/.cache/thumbnails/\*
and
sudo dnf install glycin-thumbnailer
but they did not work, and the problem only got worse after executing the first of the above commands, where the remaining thumbnails were also gone. I also tried nautilus-q but it didn't work.
I just installed Ubuntu 24.04 LTS successfully on a PC, and it runs nice and smooth.
When finishing installation, I chose encryption of the disk (LMV and encryption), and I agreed on an encryption password. I got the password noted, so no problem there.
When I'm prompted for the password ("please unlock /disk dm_crypt-0"), it is under boot-up and therefore before my Bluetooth keyboard is activated. For this reason, I would like to unlock the disk permanently without a password.
How and where in the setup can I do so, if possible?
I recently followed a guide on here that allowed me to install Ubuntu 24.04 lts on USB that was compatible with BIOS and UEFI. I have tested in on all of my computers and they all work great so far, except for my ARM based one, which of course won't work with this version of Ubuntu. I think it would be cool to also put Windows 7 or 10 or something on a partition, but this may be beyond the scope of this project for me.
My question is, without ruining my partitions, how can I add other OS's to my USB stick that won't ruin my so far ultra-compatible Ubuntu USB installation? I attached a link to the forum post on here that walked me through the first installation, as well as another post from the same user who detailed an older method for multiboot installation (see bottom of that post), but I think it may be out of date.
Thank you to karel for responding; basically I had to set up my partitions in a very specific way according to those posts to allow for booting with BIOS and UEFI. I am aware of tools to create multiboot USB drives, but if I use that tool will it ruin the way I had to set up my USB to be compatible with BIOS and UEFI? Should I resize my ext4 to unformatted space and then use the multi boot tool on that space? I am relatively new to live USBs and this project may be a bit advanced for me.
I have Lenovo Legion Y530 laptop with 120GB nvme SSD drive and 1TB hard disk. The SSD drive originally had Windows installed. I formatted the 120GB SSD drive and installed UBUNTU 22.04 LTS no dual boot only single OS.
WiFi is not working after installation completes (during installation steps also wifi was not shown).
I did all updates, upgrade, and nvidia drivers from 'Additional Drivers' option of software & Updates.
No Luck!!!. :(
I set the system to suspend and after some time. When the system is brought from suspend mode wifi magically started working.
I tried several solutions available in google and also tried installing different versions of Ubuntu, nothings works.
Realtek wifi adapter: "lspci -nnk | grep 0280 -A3" command output image
RFKILL command output: "rfkill list all"
dmesg command output: "sudo dmesg | grep rtw" - Here you can find the wifi is brought after coming out from suspend mode.
lsmod command output: "lsmod | grep rtw"
I believe some setting has to be made during the startup of the system. if any one known any solutions help me out!!!
Thanks in advance :)
I'm having issues with an HP elitebook 840 G3. I cannot access information regarding the keyboard back light on Ubuntu 18.04
My keyboard back light works normally (with pressing Fn and F3), that's not the issue, issue is being not able to read back light level from software.
I looked at /sys/class/leds/ and there was nothing that could be keyboard backlight, there were only:
_hp::hddprotect_
_input3::capslock_
_input3::numlock_
_input3::scrolllock_
_phy0-led_
Can anyone help me understand where that device might be located so I could read data about it? In order to be sure the keyboard has back light and view/control its brightness level?
I have made my laptop double boot a few months again, with Ubuntu 18.04.1 . I have been working with okular to open pdf files (for the commenting option) but suddenly okular doesn't work anymore. When trying to open okular I get the following error:
Unable to find the Okular component: Cannot load library /snap/okular/39/usr/lib/x86_64-linux-gnu/qt5/plugins/okularpart.so: (libKF5JSApi.so.5: cannot open shared object file: No such file or directory)
I don't understand how to solve this problem. Okular was working fine until today and I didn't change anything to my ubuntu system in the mean time. Perhaps the problem comes from the fact that I have been working on windows the last few days and also used the windows ubuntu app.
How can I make okular work again?
How do I get rid of the automatically opening search feature on the desktop? I'm not sure what it's actually called. It's the box that pops up (in my lower right corner) when I press a key. It's a search option just for desktop icons, I think.
I am running vim 7.4:
andrew@athens:~$ vim --version | head -n 2
VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Jun 16 2016 10:50:38)
Included patches: 1-1689
And I need to routinely type in the Euro symbol. How do I do this easily and efficiently?
Each time I try to download the new Plasma widget from the Plasma Add-On Installer, I get the following error:
Loading of providers from file: http://download.kde.org/ocs/providers.xml failed
Screenshot: 
The same problem is also happening when I am trying to install new theme. Please check the below screenshot for clarification:
Any suggestions, comments or answers will always be appreciated. Thanks.
I find Synaptic a rather convenient tool for browsing through the repositories looking what's in them but I prefer to use command line to install the actual packages (to let bash maintain history of what I have installed manually) and it annoys me that I can't use apt-get when Synaptic is running. I would also like to be able to use a nice GUI to browse remote repositories without attaching them. Does anybody happen to know a tool I might like?
I have been using dual-boot on a Lenovo Flex for about 3 weeks now with Windows 8.1 and Ubuntu 14.04.
Ubuntu started getting funny with unreliable connection (Wifi was connecting but not transfering data.) the same happened with cable
3 days ago it suddenly started to work fine for 1 hour then came funny again and accompanied by my keyboard not responding.
It works when I type my login but not once I am logged in. It works when I am under a guest session and it works with Windows.
There is no difference whether I use the on board keyboard or a USB keyboard. So it's not a hardware / driver issue.
Can anyone explain?
Update: Thanks for asking. Yes, I think the issue was raised following some update (although not immediately after) and yes, I have managed to run updates both via the updater and via the apt-get update command. Nothing changed even after reboot.
Regards
Thanks for asking and your input. Yes, I think the issue was raised following some update (although not immediately after) and yes, I have managed to run updates both via the updater and via the apt-get update command. Nothing changed even after reboot.
Replying to the question "Can you get to TTY with Ctrl+Alt+F1?" Nope1 The only key that works is the airplane mode one which is on F7. I can get to the terminal if I have prepared what I need to type beforehand with windows or another computer / phone then saving a Gedit doc...
A question: Would a restore be possible and if yes would it help? My data is on a separate partition which I can easily back-up via Windows. Tks
Gnome-Do is not running and impossible to copy / print-screen the list of applications to display here.
No possibility to use the terminal as Enter key does not work either...
I have used This forum, trying to run xen on my os:
steps i have done :
egrep '(vmx|svm)' /proc/cpuinfo
ouput = 4 and also i have run KVM virtualization with no problem.
then:
sudo apt-get install xen-hypervisor-4.4-amd64 xen-utils-4.4 xenwatch xen-tools xen-utils-common xenstore-utils virtinst virt-viewer virt-manager
then opened a console : Ctrl + Alt + F1 and :
sudo nano /etc/xen/xend-config.sxp
and appended to the last of the file these lines:
> (xend-http-server yes)
> (xend-unix-server yes)
skipped the network part coz i will manage them when every thing is right by bridge control utility .
then
ln -sf /usr/lib/xen-4.1 /usr/lib64/xen
did reboot
in my ubuntu when i loaded booted after restart, whenever i insert this terminal code:
xm dmesg
i get the error of
ERROR: Can't find hypervisor information in sysfs!
in that forum and alot searches of google it says to configure the /etc/grub.d .
i did these steps for: attempt 1:
sudo mv /etc/grub.d/10_linux /etc/grub.d/50_linux
update-grub2
attempt 2:
dpkg-divert --divert /etc/grub.d/08_linux_xen --rename /etc/grub.d/20_linux_xen
update-grub
Attempt 3:
mv /etc/grub.d/10_linux /etc/grub.d/20_linux && mv /etc/grub.d/20_linux_xen /etc/grub.d/10_linux_xen
but even with that it gives the same error.
when i try to boot from xen hypervisro which has appeared in boot grub loader, no matter what kind of xen hypervisor boot loader i select, system goes plank (or purple color of ubuntu default color) and never starts.
is there any particular solution?
P.S:
Ubuntu 14.04, AMD Mobility Radeon HD 5430/5450/5470 display ,4GB ram ,i3-370M - 2.40GHz cpu
I have 2 HDD drives in my computer. At the moment second drive is mounted as /media/storage.
How can I move my user data from /home to /media/storage/home?
Can I just move the data over there and then simply symlink it back?