In Ubuntu 25.10 GNOME / Wayland (physical machine) it seems that it is not possible to change the cursor style for all applications.

When I try to change the cursor style from gnome-tweaks → Appearance → Styles → Cursor to something else than Adwaita (default) all GNOME applications and most non-GNOME applications like Thunar, VirtualBox, Remmina, Google Chrome, MS Edge, etc. still continue to use the default style.

The style change seems to have effect only on some applications like Firefox, Thunderbird, Geany, or LibreOffice; but not in general.

There are some similar reports that suggest logging out and re-logging into the desktop session, but this makes no difference in my case.

This problem may be related to the problem of an Ubuntu 25.10 GNOME / Wayland VirtualBox guest where the mouse pointer does not change when hovering over window borders, so making resizing windows difficult.

In Ubuntu 24.04.3 I have in the settings the Automatic Date & Time and Automatic Timezone. I can change manually via GUI, configure the continents and cities with sudo dpkg-reconfigure tzdata but I can't make it be automatic and since I travel quite a lot It kind of bothers me not having that automatic change and having to change it everytime.
(Don't know if it matters but I'm using a dual boot system where windows is really just a fail safe)

This is the timedatectl output while I'm South Africa and still displays Portugal's time/zone

timedatectl
               Local time: Thu 2025-12-04 09:09:12 WET
           Universal time: Thu 2025-12-04 09:09:12 UTC
                 RTC time: Thu 2025-12-04 09:09:12
                Time zone: Europe/Lisbon (WET, +0000)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no

Any tips or is this a known issue?

How do I solve this issue with apt update?

Err:8 https://pkg.cloudflareclient.com noble InRelease
  The following signatures were invalid: EXPKEYSIG 6E2DD2174FA1C3BA Cloudflare Package Repository <support@cloudflare.com>
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://pkg.cloudflareclient.com noble InRelease: The following signatures were invalid: EXPKEYSIG 6E2DD2174FA1C3BA Cloudflare Package Repository <support@cloudflare.com>
W: Failed to fetch https://pkg.cloudflareclient.com/dists/noble/InRelease  The following signatures were invalid: EXPKEYSIG 6E2DD2174FA1C3BA Cloudflare Package Repository <support@cloudflare.com>

Ubuntu 24.04.

KDE Plasma 5.27.12

System Settings -> Printers: This is the message.

Print Service is Unavailable
Bad file descriptor

I followed all the recommendations only for the errors to show up on every one. The only time there was no error was stopping CUPS. When I tried to restart CUPS there were errors.

I have tried many virtual machine packages using my Lenovo laptop running ARM snapdragon processor on Win 11 Pro WITHOUT SUCCESS. So I decided to try Linux and Ubuntu.

I am hopeful a solution or a work around might be available.

I want to find file 'apt_config_command.yaml' in subfolder... But fdfind can't do it while find works... Why?

How to reproduce?

a@Linux:/tmp$ sudo apt install fd-find
a@Linux:/tmp$ git clone https://github.com/canonical/subiquity.git && cd subiquity/
a@Linux:/tmp/subiquity$ make install_deps
a@Linux:/tmp/subiquity$ fdfind -tf -F 'apt_config_command.yaml'
# Why nothing?
a@Linux:~/mycode/subiquity$ find . -name 'apt_config_command.yaml'
./curtin/examples/tests/apt_config_command.yaml

But inside folder searching works

a@Linux:~/mycode/subiquity$ cd curtin/
a@Linux:~/mycode/subiquity/curtin$ fdfind -tf -F 'apt_config_command.yaml'
examples/tests/apt_config_command.yaml

Software version

$ fdfind --version
fdfind 10.3.0

I do get an SSL Connection timeout when I run the command curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.3/install.sh | bash in Ubuntu (22)

I bought a TP-Link AC600 WiFi adapter and would like to try hacking into my WiFi network. The first problem is that when I use the commands:

sudo airmon-ng check kill
sudo airmon-ng start wlan0

The network interface name doesn't change, but I get this:

When I try to enter it again I get this:

airodump-ng doesn't detect any network traffic even after waiting more than a few minutes.

I have no idea why airodump-ng isn't collecting any information. Is it because of the interface name or what appears when I type airmon-nq start wlan0 ([phy0]10) for the second time?

Additionally, I tested wifite, but it already works correctly once. After interrupting it with Ctrl+C and entering the same command a second time, wifite also doesn't collect any information.

Does anyone know what could be the fault? Kali Linux, my adapter, drivers?

Kali linux ver: 2025.3, updated by terminal.

Oracle VirualBox

I have just upgraded to 22.04.05 and am getting fatal errors on usrmerge, how do I fix this? Here are the error messages:

randy@randy-aspire-tc-780:~$ /usr/lib/usrmerge/convert-usrmerge
Smartmatch is experimental at /usr/lib/usrmerge/convert-usrmerge line 172.
ionice: ioprio_set failed: Operation not permitted
chrt: failed to set pid 63073's policy: Operation not permitted
cp: cannot create regular file '/usr/opt/eset/esets/lib/libesets_pac.so': No such file or directory

FATAL ERROR:
cp --no-dereference --preserve=all --reflink=auto --sparse=always /opt/eset/esets/lib/libesets_pac.so /usr/opt/eset/esets/lib/libesets_pac.so: rc=1

You can try correcting the errors reported and running again
/usr/lib/usrmerge/convert-usrmerge until it will complete without errors.
Do not install or update other Debian packages until the program
has been run successfully.

On another post I accidentally wrote I had version 20.04. It is not so and I have 24.04. My mistake. The post got closed.

A few days ago I decided to work to bring an old laptop I have into a movie server. It worked great until today when a speed test reported 100mb/s of download. It should be 1000mb/s as it was the days before. The cable is correct. I searched forums and some guy recommend to paste this ethtool command:

ethtool -s (network-id) speed 1000 duplex full autoneg off

What it only did was to immediately disconnect me from SSH and not let me connect again. It messed up a lot of things that some I was able to fix it by myself.

I have 3 problems:

1. The boot process is suddenly very long, about 4 minutes. It was about a minute before.

2. There seems to be a couple problems at the login screen. See attached: https://imgur.com/a/QWgbMAY

   

3. The problem with the network speed continues. I've discovered that it has normal 1 GB speeds and after some time it caps at exactly 100mbs. I speculate it's some power-saving setting. I've already edited "HandleLidSwitch" on logind.conf.

I can no longer print from any apps and have tried hplip installs etc., in terminal can see printer by name, but no printer available to execute, though connected hard wire. Function working fine 'til major update +/- Nov 28... can't find anything to help, thanks. channing

How to put my script to late-commands section? This is my script

cat<<'EOF' >> $HOME/.bashrc

upd_rustdesk() {
    sudo dpkg --install $(basename $(wget $(wget -qk -l 0 "https://github.com/rustdesk/rustdesk/releases" -O /tmp/index.html ; cat /tmp/index.html | grep -o 'https:[^"]*.deb' | grep '\/rustdesk-[0-9]*[0-9]\.[0-9].*_64.deb' | sort -r -n | head -1)))
}
EOF

But all examples with late-commands use one-line code...

I'm using Kubuntu 25.10 with a multi-monitor-setup. For example, for many years Thunderbird changed the focus to Firefox after I clicked a link in it. This was the default behavior. But for some time now (maybe since the switch to Wayland???) this changed, and I have to manually switch the focus to Firefox after clicking the link in TB. The Firefox icon in the taskbar becomes orange, but it isn't brought to the foreground...!?

I am really annoyed by this. How can I change that to the old approach of switching to Firefox (or any other just-opened application) immediately by default?

(I've edited it with more information about it)

Hi lovely team! 💖

I have THIS BUG only in one project, that's driving me crazy and I don't know what else to do to fix it:

After uploading pending changes to GitHub, the bug persists:

But in the other projects looks good:

The bug in question only appears here and it displays that >R> which I'm not sure which glyph it refers to.

To give you some context:

• My operating system is Ubuntu 24.04.3 LTS
• When I run it echo "\ue0b0 \u00b1 \ue0a0 \u27a6 \u2718 \u26a1 \u2699" it shows me this:

• In the terminal preferences I have this:

• I've tried different fonts that I downloaded from here: https://github.com/powerline/fonts

git clone https://github.com/powerline/fonts.git
cd fonts 
./install.sh
sudo fc-cache -fv  //to refresh the cache without having to restart

• As you can see, they appear for me. I've tried several and none of them fix the bug.

Any ideas on how to fix it? Thanks in advance 😊

I have a new Ubuntu install and a newly downloaded and expanded eclipse application. I put the following eclipse.desktop into ~/.local/share/applications:

[Desktop Entry]
Type=Application
Name=Eclipse
Comment=Eclipse IDE
Exec=/opt/eclipse/eclipse-java-2025-09-R-linux-gtk-x86_64/eclipse/eclipse  # Path to the Eclipse executable
Icon=/opt/eclipse/eclipse-java-2025-09-R-linux-gtk-x86_64/eclipse/icon.xpm # Path to the Eclipse icon file (often icon.xpm)
Terminal=false
Categories=Development;IDE;
StartupWMClass=Eclipse

When I use "Show Apps", I would like to be able to see Eclipse, preferably without searching for it. For now, I enter "eclipse" into the search field, and Eclipse shows up as an empty rectangle just below the search field. If I click on that, eclipse runs, but I was expecting the Eclipse icon in that rectangle.

I have read two other posts on Ask Ubuntu and tried suggestions from those. I have verified that icon.xpm is in the directory specified in the desktop file (i.e., in the directory with the executable). I have used find to verify that this is the only eclipse.desktop file on the disk. I have eliminated this desktop file and double-clicked on the executable from the Files application; Eclipse runs, but no eclipse.desktop file appears in ~/.local/share/applications or anywhere else.

Can someone help me figure out how to get the Eclipse icon working for the Show Apps app?

I'm unable since today to start the Postman application that I installed using snap.
I've been running it since years now and it won't start anymore.
I tried starting it from the terminal and it gives me this error +a large stack trace with references to ERR: Display.cpp:1083 ...

A JavaScript error occurred in the main process
Uncaught Exception:
Error: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.28' not found (required by /snap/postman/362/usr/share/postman/resources/app/node_modules/native_modules/build/Release/pty.node)
    at process.func [as dlopen] (node:electron/js2c/node_init:2:2559)
    at Module._extensions..node (node:internal/modules/cjs/loader:1602:18)
    at Object.func [as .node] (node:electron/js2c/node_init:2:2559)
    at Module.load (node:internal/modules/cjs/loader:1295:32)
    at Module._load (node:internal/modules/cjs/loader:1111:12)
    at c._load (node:electron/js2c/node_init:2:16955)
    at Module.require (node:internal/modules/cjs/loader:1318:19)
    at require (node:internal/modules/helpers:179:18)
    at ./node_modules/node-pty/build/Release/pty.node (/snap/postman/362/usr/share/postman/resources/app/main.js:12:124700)
    at __webpack_require__ (/snap/postman/362/usr/share/postman/resources/app/main.js:751:653121)

I've already run sudo apt update and sudo apt upgrade as well as sudo apt install libc6, but it says it's the latest version. It's running on Ubuntu 22.04.5 LTS.

In etc/default/keyboard, I have XKBOPTIONS="ctrl:nocaps". Sometimes, I decide that I need my caps lock. In other words, I want to run something in my terminal to undo this setting.

What can I do?

I've tried setxkbmap -option caps:capslock, but that simply does nothing.

I just upgraded my Ubuntu 22.04 LTS machine and now it gets stuck during boot with the message:

[FAILED] Failed to start Wait for Network to be Configured

on an otherwise black screen. I can still access the machine via ssh

systemd-analyze blame gives

2min 230ms systemd-networkd-wait-online.service
   17.473s networking.service
   12.039s NetworkManager-wait-online.service
   10.101s gpu-manager.service
    6.659s postgresql@14-main.service
    1.850s systemd-udev-settle.service
    1.688s plymouth-quit-wait.service
     762ms blueman-mechanism.service
     688ms dev-mapper-vglinux\x2droot.device
     604ms lvm2-pvscan@8:3.service
     343ms home-evehom-Megingjord.mount
     328ms boot-efi.mount
     267ms systemd-fsck@dev-disk-by\x2duuid-0E9E\x2d46AA.service
     255ms udisks2.service
     206ms systemd-journal-flush.service
     190ms networkd-dispatcher.service
     187ms zfs-load-module.service
     172ms user@1000.service
     156ms systemd-udev-trigger.service
     150ms accounts-daemon.service
     126ms systemd-resolved.service
     107ms apparmor.service
     101ms NetworkManager.service
     101ms avahi-daemon.service
      99ms systemd-udevd.service
      94ms modprobe@chromeos_pstore.service
      92ms polkit.service
      89ms lvm2-monitor.service
      89ms systemd-journald.service
      87ms smbd.service
      76ms thermald.service
      74ms systemd-logind.service
      72ms wpa_supplicant.service
      70ms systemd-networkd.service
      62ms keyboard-setup.service
      62ms backup.mount
      60ms ModemManager.service
      59ms preload.service
      53ms grub-common.service
      52ms alsa-restore.service
      39ms systemd-tmpfiles-setup.service
      38ms modprobe@drm.service
      37ms casper-md5check.service
      35ms home.mount
      35ms systemd-sysctl.service
      34ms nmbd.service
      34ms ssh.service
      32ms packagekit.service
      31ms lm-sensors.service
      31ms cups.service
      31ms systemd-modules-load.service
      30ms e2scrub_reap.service
      27ms rsyslog.service
      27ms hddtemp.service
      25ms run-rpc_pipefs.mount
      25ms resolvconf-pull-resolved.service
      24ms lightdm.service
      22ms ntp.service
      22ms dev-hugepages.mount
      22ms dev-mapper-vglinux\x2dswap_1.swap
      22ms dev-mqueue.mount
      21ms sys-kernel-debug.mount
      20ms sys-kernel-tracing.mount
      20ms zfs-volume-wait.service
      18ms plymouth-start.service
      17ms kmod-static-nodes.service
      16ms grub-initrd-fallback.service
      14ms modprobe@configfs.service
      13ms ubiquity.service
      13ms zfs-mount.service
      13ms modprobe@fuse.service
      12ms plymouth-read-write.service
      12ms systemd-sysusers.service
      10ms zfs-share.service
      10ms systemd-tmpfiles-setup-dev.service
       9ms systemd-random-seed.service
       9ms systemd-remount-fs.service
       8ms dns-clean.service
       8ms user-runtime-dir@1000.service
       8ms systemd-update-utmp-runlevel.service
       7ms rpc-statd-notify.service
       7ms rpcbind.service
       6ms modprobe@efi_pstore.service
       6ms modprobe@pstore_blk.service
       6ms systemd-update-utmp.service
       6ms modprobe@pstore_zone.service
       6ms openvpn.service
       6ms console-setup.service
       5ms modprobe@ramoops.service
       5ms ifupdown-pre.service
       5ms sys-kernel-config.mount
       5ms systemd-user-sessions.service
       4ms sys-fs-fuse-connections.mount
       4ms finalrd.service
       3ms rtkit-daemon.service
       2ms setvtrgb.service
       1ms postgresql.service
      28us blk-availability.service

I found this thread A start job is running for wait for network to be configured. Ubuntu server 17.10 and added optional: true to /etc/netplan/01-netcfg.yaml but to no avail, after applying this and rebooting the machine still gets stuck at [FAILED] Failed to start Wait for Network to be Configured.

Any pointers to avoid a complete OS reinstall would be greatly appreciated! Thanks in advance/Evert

cat /etc/netplan/01-netcfg.yaml 

network:
  version: 2
  renderer: networkd
  ethernets:
    enp0s3:
      dhcp4: yes
      optional: true

ls /etc/netplan/
01-netcfg.yaml

I managed to fix the problem, for some reason the Nvidia drivers had become uninstalled. I installed them command line and can now access the GUI again. Everything seems to work as normal.

Thanks for your consideration/Evert

Specifications:

• Gigabyte X99P-SLI

• BIOS v F23

• BIOS Date 07/22/2016

• BIOS ID 8A07AG0H

• GeForce RTX3090 GPU

Ubuntu upgrade from desktop GUI: 18.04 -> 20.04;

journalctl -p err | grep EDAC reports following bootup error messages ...

~ kernel: EDAC sbridge: Couldn't find mci handler
~ kernel: EDAC sbridge: Failed to register device with error -19.
~ kernel: EDAC sbridge: CPU SrcID #0, Ha #0, Channel #0 has DIMMs, but ECC is disabled

Symptom is benign; however, unable to resolve cause of problem.

I recently updated my laptop from Ubuntu 20.04 to 22.04. While the Touchscreen was OFF in Ubuntu 22.04 even when the system rebooted, it just doesn't go off in Ubuntu 22.04. I tried everything. xinput --list doesn't show touchscreen id anywhere. I also changed the touchscreen from ON to OFF in /usr/share/X11/xorg.conf.d/40-libinput.conf

Results of xinput --list :

Ever since I updated from 18 LTS to Ubuntu 20 LTS this has been happening 90% of the time I close my monitor lid and when I open up the lid to reactivate my computer from sleep it would be stuck on the screen in the picture below. I've tried some things I found online, unfortunately no one directly has my problem. Any help would be appreciated, or else I'll probably wipe and reinstall Ubuntu 18.04 or 20.04.

Error message:

I have 3 files in a directory:

aaa.jpg    
bbb.jpg  
ccc.jpg  

I can scale down an image using ImagkMagick convert:

convert aaa.jpg -resize 1200x900 aaa-small.jpg  

I want to do all the images in the directory, something like:

convert *.jpg -resize 1200x900 *-small.jpg  

but this results in files named like so:

*-small-0.jpg  
*-small-1.jpg  
*-small-2.jpg  

What I want is:

aaa-small.jpg  
bbb-small.jpg  
ccc-small.jpg  

How do I do this?

I've installed Ubuntu 20 LTS from official site with Rufus. And then I downloaded Google Chrome from google.com/chrome 64 bit.deb for Ubuntu The first time I open, Chrome works nomally but after that time I can't manage to open it, I tried to launch it from terminal/gnome it yeilds: NaCl helper process running without a sandbox! Most likely you need to configure your SUID sandbox correctly This also happens on Ubuntu 18.04 Any help is appreciated!

After a series of mishaps with Secure Boot (trying to sign VMWare Player kernel modules), GRUB stopped showing the entries corresponding to Ubuntu 19.10, installed as ZFS root (default 19.10 installer options), booting in the System Setup by default.

I was able to boot into my system by doing the following (from memory; some details below may be off).

In the GRUB shell, I entered

set root=(hd0,gptXXX)
linux /BOOT/ubuntu_YYY/@/vmlinuz root=ZFS=rpool/ROOT/ubuntu_YYY boot=zfs
initrd /BOOT/ubuntu_YYY/@/initrd.img
boot

To find which gptXXX partition to use, I ran ls and then ls (hd0,gptXXX)/ until I found the boot files. The ubuntu_YYY seems a unique identifier for the Ubuntu system. I found it by ls-ing around (hd0,gptXXX)/BOOT.

While ls-ing around from GRUB, I got a few errors concerning the compression algorithm 115 not supported.

I don't have any other operating system installed, and I disabled Secure Boot for now.

I wonder now what steps to take to restore the GRUB bootloader correct operation. If I can't fix it, I may simply end up installing a fresh 20.04 LTS copy. But at least the above can be of help for anybody ending up in the same situation.

Edit: I have compression=lz4 set on rpool (but not on bpool), it may be related.

I've got a school lab with Ubuntu 18. On some computers, when Chrome is open I'm getting popups saying things like "local weather" or "Sandra transferred $99,999.00 PayPal" and the like.

chrome://extensions is blank

I need to a) remove the malware / extension and b) somehow lock down the ability to modify Chrome ?

Thanks ...

Completely new to Ubuntu and programming as well. Installed CodeLite yesterday and still cannot compile a project. I get this after pressing "Compile this file".

/bin/sh -c '/usr/bin/make -j4 -e -f  "ge_me.mk"  MakeIntermediateDirs && /usr/bin/make -j4 -e -f  "ge_me.mk"  /main.cpp.o'
----------Building project:[ ge_me - Debug ] (Single File Build)----------
<built-in>: fatal error: opening dependency file /main.cpp.o.d: Permission denied
compilation terminated.
ge_me.mk:97: recipe for target '/main.cpp.o.d' failed
make: *** [/main.cpp.o.d] Error 1
====0 errors, 0 warnings====

Searched lots of problems about this throughout the internet, installed a number of packages. Since I wasn't understanding what I was doing (I am completely new to this stuff as I mentioned) I have run into this problem. Help please.

How do you add slide presenter notes in LibreOffice Impress?

I need to add a transcript to read for each slide during my presentation. (It should also serve as notes for the student if viewing the presentation file later.)

I think I've encountered a bug with the nvidia drivers in Ubuntu 17.10.

When I remove nvidia-384 using sudo apt remove nvidia*, colord seems to stop being able to detect my monitor.

I reinstalled nvidia-384 and I noticed this error while it tried to reinstall:

dpkg: error: version '-' has bad syntax: revision number is empty

I'm not sure what it means, but here's a snippet of my terminal during the install:

update-alternatives: using /usr/share/nvidia-384/glamor.conf to provide /usr/share/X11/xorg.conf.d/glamoregl.conf (glamor_conf) in auto mode
dpkg: error: version '-' has bad syntax: revision number is empty
update-initramfs: deferring update (trigger activated)
INFO:Enable nvidia-384

This is the second time I've gotten that error, after reformatting 17.10 a couple of days ago. 'colormgr get-devices' returns no devices.

Also 'colormgr create-device D2757 temp display' returns:

could not check org.freedesktop.color-manager.create-device for auth: GDBus.Error:org.freedesktop.PolicyKit1.Error.NotAuthorized: Only trusted callers (e.g. uid 0 or an action owner) can use CheckAuthorization() for subjects belonging to other identities

That's as far as I can go with this problem. I'm out of my depth in resolving it any further.

I'm trying to run 2 simple examples in C/C++ using the GNU Scientific Library.

That are the codes:

1st: An Example Program

#include <stdio.h>
#include <gsl/gsl_sf_bessel.h>

int main (void)
{
  double x = 5.0;
  double y = gsl_sf_bessel_J0 (x);
  printf ("J0(%g) = %.18e\n", x, y);
  return 0;
}

2nd: Example programs for matrices:

#include <stdio.h>
#include <gsl/gsl_matrix.h>

int main (void)
{
  int i, j; 
  gsl_matrix * m = gsl_matrix_alloc (10, 3);
  
  for (i = 0; i < 10; i++)
    for (j = 0; j < 3; j++)
      gsl_matrix_set (m, i, j, 0.23 + 100*i + j);
  
  for (i = 0; i < 100; i++)  /* OUT OF RANGE ERROR */
    for (j = 0; j < 3; j++)
      printf ("m(%d,%d) = %g\n", i, j, 
              gsl_matrix_get (m, i, j));

  gsl_matrix_free (m);

  return 0;
}

I saw on the Software Center that I have the GNU Scientific Library (GSL) - Library package (libgsl0ldbl 1.16+dfsg-1ubuntu1), but the documentation that I read said that I needed to compile with the next code:

$ gcc -Wall -I/usr/local/include -c example.c

And directory /usr/local/include was empty, so recently I have also installed manually from the site [Main GSL - GNU Scientific Library site] 2 the new version GSL2.1. Next I ran the code before mentioned so I had a new file example.o then I ran the next code:

$ gcc -L/usr/local/lib example.o -lgsl -lgslcblas -lm

So I had a a.out file, I tried to run $ ./a.out, but the output was:

./a.out: error while loading shared libraries: libgsl.so.19: cannot open shared object file: No such file or directory

I tried this command too:

$ ldconfig -p | grep gsl
    libgslcblas.so.0 (libc6,x86-64) => /usr/lib/libgslcblas.so.0
    libgsl.so.0 (libc6,x86-64) => /usr/lib/libgsl.so.0

So I can see that the excecution of a.out was asking for libgsl.so.19 but the ldconfig said that the library on the PC is libgsl.so.19

I did enable the #enable-smooth-scrolling flag in Chrome and rebooted both Chrome and the machine numerous times, but scrolling in Chrome is still just as jumpy. I know it's not hardware issue, as my machine can handle smooth scrolling of huge .pdf documents just fine, but Chrome stutters even on simplest webpage. Is there an additional flag I should enable or perhaps a some touchpad configuration I should make to see Chrome on Ubuntu scrolling just as smooth as on Windows?