Asking for my partner! We're both new to Linux, but I've never encountered this issue before on Ubuntu. We've managed to finally fulfill the Java dependency error we were getting, but haven't managed to figure this one out just yet. We've gotten this in the terminal & are stumped from here:

The following packages have unmet dependencies: minecraft-launcher: Depends: libgdk-pixbuf2.0-0 (>= 2.22.0) but it is not installable

Unsure if it's any help, but they're working on a Framework laptop & I'm troubleshooting from far away at the moment!

As you know in Ubuntu "the autoinstall file uses the YAML format". I made my autoinstall file. Before using I want validate my file using instruction. My config failed validation but in fact I can use this wrong config to successfully install Ubuntu 24.04.3 Why I can't pass validation?

Validation log:

a@Linux:/tmp$ cd '/tmp' && git clone https://github.com/canonical/subiquity.git && cd subiquity/
a@Linux:/tmp/subiquity$ make install_deps
a@Linux:/tmp/subiquity$ wget 'https://gist.githubusercontent.com/AndreiCherniaev/f29d024b7c2bbbd59f39e2b66dfc2a04/raw/12b5377061c0134cad780d3d7bbe1a119ffd6c16/Cher0_1_ubuntu-deployment.yaml'
a@Linux:/tmp/subiquity$ SNAP=. ./scripts/validate-autoinstall-user-data.py --no-expect-cloudconfig -vvv '/tmp/subiquity/Cher0_1_ubuntu-deployment.yaml' 
start: subiquity/load_autoinstall_config: 
start: subiquity/load_autoinstall_config/read_config: 
finish: subiquity/load_autoinstall_config/read_config: SUCCESS: 
start: subiquity/Reporting/load_autoinstall_data: 
finish: subiquity/Reporting/load_autoinstall_data: SUCCESS: 
start: subiquity/Integrity/load_autoinstall_data: 
finish: subiquity/Integrity/load_autoinstall_data: SUCCESS: 
start: subiquity/Error/load_autoinstall_data: 
finish: subiquity/Error/load_autoinstall_data: SUCCESS: 
start: subiquity/core_validation: 
start: subiquity/core_validation/top_level_keys: 
finish: subiquity/core_validation/top_level_keys: SUCCESS: 
finish: subiquity/core_validation: SUCCESS: 
start: subiquity/Early/load_autoinstall_data: 
finish: subiquity/Early/load_autoinstall_data: SUCCESS: 
finish: subiquity/load_autoinstall_config: SUCCESS: 
start: subiquity/load_autoinstall_config: 
start: subiquity/load_autoinstall_config/read_config: 
finish: subiquity/load_autoinstall_config/read_config: SUCCESS: 
start: subiquity/Early/load_autoinstall_data: 
finish: subiquity/Early/load_autoinstall_data: SUCCESS: 
start: subiquity/Reporting/load_autoinstall_data: 
finish: subiquity/Reporting/load_autoinstall_data: SUCCESS: 
start: subiquity/Error/load_autoinstall_data: 
finish: subiquity/Error/load_autoinstall_data: SUCCESS: 
start: subiquity/Userdata/load_autoinstall_data: 
finish: subiquity/Userdata/load_autoinstall_data: SUCCESS: 
start: subiquity/Package/load_autoinstall_data: 
finish: subiquity/Package/load_autoinstall_data: SUCCESS: 
start: subiquity/Debconf/load_autoinstall_data: 
finish: subiquity/Debconf/load_autoinstall_data: SUCCESS: 
start: subiquity/Locale/load_autoinstall_data: 
finish: subiquity/Locale/load_autoinstall_data: SUCCESS: 
start: subiquity/Refresh/load_autoinstall_data: 
finish: subiquity/Refresh/load_autoinstall_data: SUCCESS: 
start: subiquity/Kernel/load_autoinstall_data: 
finish: subiquity/Kernel/load_autoinstall_data: SUCCESS: 
start: subiquity/KernelCrashDumps/load_autoinstall_data: 
finish: subiquity/KernelCrashDumps/load_autoinstall_data: SUCCESS: 
start: subiquity/Integrity/load_autoinstall_data: 
finish: subiquity/Integrity/load_autoinstall_data: SUCCESS: 
start: subiquity/Keyboard/load_autoinstall_data: 
finish: subiquity/Keyboard/load_autoinstall_data: SUCCESS: 
start: subiquity/Zdev/load_autoinstall_data: 
finish: subiquity/Zdev/load_autoinstall_data: SUCCESS: 
start: subiquity/Source/load_autoinstall_data: 
finish: subiquity/Source/load_autoinstall_data: FAIL: 
finish: subiquity/load_autoinstall_config: FAIL: 

Traceback (most recent call last):
  File "/tmp/subiquity/./scripts/validate-autoinstall-user-data.py", line 171, in verify_autoinstall
    app.load_autoinstall_config(only_early=False, context=None)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/tmp/subiquity/scripts/../subiquitycore/context.py", line 159, in decorated_sync
    return meth(self, **kw)
  File "/tmp/subiquity/scripts/../subiquity/server/server.py", line 788, in load_autoinstall_config
    controller.setup_autoinstall()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/tmp/subiquity/scripts/../subiquity/server/controller.py", line 93, in setup_autoinstall
    self.load_autoinstall_data(ai_data)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/tmp/subiquity/scripts/../subiquity/server/controllers/source.py", line 112, in load_autoinstall_data
    self.model.current = self.model.get_matching_source(id)
                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^
  File "/tmp/subiquity/scripts/../subiquity/models/source.py", line 147, in get_matching_source
    raise KeyError
KeyError
Failure: The provided autoinstall config failed validation

Job for cups.service failed because the control process exited with error code.

See "systemctl status cups.service" and "journalctl -xeu cups.service" for details.

I got a new SSD and I want to clone the harddrive in my laptop to the new SSD drive.

I wanted to use DD but not sure of the correct command as my laptop drive is listed as /dev/nvme0n1 and /dev/nvme0n2 not SDA

Can anyone help please.

I have a Unicode font file U with special glyphs in it. I also have a font file F with some of the same glyphs and other ones of interest. F does not seem to use Unicode. For example the character U+25A1 (white square) seems to be mapped to the ascii character # (0x23). I would like to update the Unicode file U with the glyphs in file F, but with correct Unicode values. How do I this?

I have installed signal-desktop and used it happily for eons. Or at least long enough that I don't specifically recall installing it.

I'm running Ubuntu 24.04.3 LTS

At some point recently, I stopped being able to launch signal-desktop from the launcher (Window Key (Meta Key) --> Type to Search) but I can still launch it from the command line. When I try to "type to search" to launch, nothing comes up. The search turns up a number of files with "signal" in the name, but not the app.

How do I ensure that the launcher (is that even the right word?) can find signal-desktop in its search?

amanda@omori:~$ which signal-desktop 
/snap/bin/signal-desktop
amanda@omori:~$ echo $PATH
/home/amanda/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/snap/bin

Alt+Shift switches keyboard layout twice in Ubuntu 24.04 GNOME

I have two input sources (US + RU). Using Alt+Shift, the layout switches from EN → RU with one press, but switching back from RU → EN requires two Alt+Shift presses.

I already tried resetting and reapplying xkb-options.

Here is my system information:

1. Input sources: gsettings get org.gnome.desktop.input-sources sources → [('xkb', 'us'), ('xkb', 'ru')]

2. xkb-options: gsettings get org.gnome.desktop.input-sources xkb-options → ['grp:alt_shift_toggle']

3. GNOME version: gnome-shell --version → GNOME Shell 46

4. GNOME Tweaks → Additional Layout Options: screen

Question:
How can I completely disable all hidden layout toggles and make Alt+Shift switch layouts only once in both directions?

etc/cups/ has a directory and several files with no content. Suggestion to comment out some lines in cupsd.conf can't be done - file is empty - assuming the overlay big-X and large question mark on attempted show content mean that. This showed up after update done Monday Dec 1 morning.

I need to raise my file limits above the default. There are numerous web pages explaining how to do this, They are unanimous in recommending editing the appropriate parameters in /etc/security/limits.conf. Mine is a personal laptop that is on my home network and no one else has access. But when I open this file I see only commented out lines explaining how to edit this file; it has no active content, and yet somehow my limits are 1024 for both hard and soft. If I add the following two lines

*       soft    nofile 2048
*       hard    nofile 2048

and log out and in, the limit remains 1024. Is there some other file that this distribution uses for this config? And why do these changes not work?

Integrated web camera on my Dell Latitude 5550 is not working. Cheese shows a picture of a camera with a slash through it. Discord also does not find the camera. This is where I have gotten with respect to debugging the problem:

ls /dev/video*
/dev/video0  /dev/video1

lsusb | grep -i web
Bus 003 Device 003: ID 0bda:557b Realtek Semiconductor Corp. Integrated_Webcam_FHD

“lsusb -t” for Bus 003 Device 003:
    |__ Port 003: Dev 003, If 0, Class=Video, Driver=uvcvideo, 480M
    |__ Port 003: Dev 003, If 1, Class=Video, Driver=uvcvideo, 480M
    |__ Port 003: Dev 003, If 2, Class=Application Specific Interface, Driver=[none], 480M

What does the "If x" mean?

lsmod | grep uvcvideo
uvcvideo              139264  0
videobuf2_vmalloc      20480  1 uvcvideo
uvc                    12288  1 uvcvideo
videobuf2_v4l2         36864  1 uvcvideo
videodev              352256  2 videobuf2_v4l2,uvcvideo
videobuf2_common       81920  4 videobuf2_vmalloc,videobuf2_v4l2,uvcvideo,videobuf2_memops
mc                     81920  4 videodev,videobuf2_v4l2,uvcvideo,videobuf2_common

It appears that uvcvideo driver is loaded.

I checked in BIOS and the camera is enabled there.

In "syslog" is the following information related to the camera: 
2025-11-16T07:31:54.707023-05:00 Latitude-5550 wireplumber[4076]: SPA handle 'api.libcamera.enum.manager' could not be loaded; is it installed?


2025-11-16T07:31:54.707048-05:00 Latitude-5550 wireplumber[4076]: PipeWire's libcamera SPA missing or broken. libcamera not supported.


2025-11-16T07:31:54.822825-05:00 Latitude-5550 wireplumber[4076]: <WpPortalPermissionStorePlugin:0x653a79b70b60> Failed to call Lookup: GDBus.Error:org.freedesktop.portal.Error.NotFound: No entry for camerasyslog:
2025-11-16T07:31:54.707023-05:00 Latitude-5550 wireplumber[4076]: SPA handle 'api.libcamera.enum.manager' could not be loaded; is it installed?


2025-11-16T07:31:54.707048-05:00 Latitude-5550 wireplumber[4076]: PipeWire's libcamera SPA missing or broken. libcamera not supported.


2025-11-16T07:31:54.822825-05:00 Latitude-5550 wireplumber[4076]: <WpPortalPermissionStorePlugin:0x653a79b70b60> Failed to call Lookup: GDBus.Error:org.freedesktop.portal.Error.NotFound: No entry for camera

Searching for that error on the internet, it says to install the following packages:

1. libcamera-ipa

2. pipewire-libcamera

but neither of these packages exist in the repository.

Next I tried to install pipewire:

sudo apt install pipewire
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
pipewire is already the newest version (1.0.5-1ubuntu3).
pipewire set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

This is on Ubuntu 24.04.

Where do I go from here?

I installed wine using the instructions on https://gitlab.winehq.org/wine/wine/-/wikis/Debian-Ubuntu

wine --version gives me wine-10.0

wine --help gives me nothing

wine PROGRAM gives me

Application could not be started, or no application associated with the specified file. ShellExecuteEx failed: File not found.

According to the instructions I can run this: wine setup_hotpot_7030.exe

I get this :

0138:fixme:msg:ChangeWindowMessageFilter c04b 00000001 0138:fixme:win:DisableProcessWindowsGhosting : stub

setup_hotpot_7030 or hot patotoes is rather old freeware, it is set of didactic exercises found on https://hotpot.uvic.ca/

I've run wine setup_hotpot_7030.exe in the downloads folder where the exe file can be found. I've also run it from the home folder.

I can see a hot potatoes configuration window appear asking me what language I want the application to use. I choose 'English' hit 'OK' and the window disappears. And that's it.

I've tried to install via graphical installers, doesn't work. I haven't yet tried out the tar.xz file but then I would have to remove this installation first. Makes me nervous.

I'm running this on a laptop. I made a partition myself (my first ever) and installed ubuntu 22.04 on it and then upgraded it later to 24.04 (noble nombat).

I really don't know what to do. Thank you and greetings,

Karin Meersman

I use VLC to monitor a DVR via RTSP. Suddenly it stopped connecting. I have tried everything I can find, but it still fails to connect.

VLC version is 3.0.16 Vetinari. It used to work, then about a week ago, it started to fail, giving:

"Your input can't be opened: VLC is unable to open the MRL rtsp://192.168.1.195:554/ch04/0. Check the log for details."

I have tried removing and reinstalling, both with Symantic and sudo apt install, which I think means snap. I tried sudo apt-get install, but it makes no difference. I have a log output, very long, but I cannot understand what it is telling. I can post it if it would help.

This first started on my daily-use Desktop, for a day the backup laptop worked, then it also failed. I assume there was some kind of update that borked it. The laptop has 3.0.20 Vetinari.

EDIT

I followed the instructions in Sotirov's answer, but it did not solve the problem. After doing exactly what I was told, the command: vlc rtsp://192.168.1.195:554/ch04/0 led to the usual hint as to how to get 'help', and also it opened vlc with, again, the same fault as before.

Rebooting made no difference. I am thinking of seeing if I can install an earlier version of vlc, to see if that helps. I think this is 'editing my question post'. If not, I can only apologise. Results:

david@desktop-2:~$ which vlc
/usr/bin/vlc
david@desktop-2:~$ vlc rtsp://192.168.1.195:554/ch04/0
VLC media player 3.0.16 Vetinari (revision 3.0.13-8-g41878ff4f2)
VLC media player 3.0.16 Vetinari
Command Line Interface initialized. Type `help' for help.

and it waited for input. This time, it did not launch vlc, which it did before.

Results from just now:

david@desktop-2:~$ sudo apt remove vlc
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package 'vlc' is not installed, so not removed
0 to upgrade, 0 to newly install, 0 to remove and 11 not to upgrade.
david@desktop-2:~$ sudo apt autoremove
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
0 to upgrade, 0 to newly install, 0 to remove and 11 not to upgrade.
david@desktop-2:~$ sudo snap install vlc
snap "vlc" is already installed, see 'snap help refresh'
david@desktop-2:~$ snap refresh
All snaps up to date.
david@desktop-2:~$ vlc rtsp://192.168.1.195:554/ch04/0
VLC media player 3.0.16 Vetinari (revision 3.0.13-8-g41878ff4f2)
VLC media player 3.0.16 Vetinari Command Line Interface initialized.
Type `help' for help.

I rebooted, and then did the same command:

david@desktop-2:~$ vlc rtsp://192.168.1.195:554/ch04/0
VLC media player 3.0.16 Vetinari (revision 3.0.13-8-g41878ff4f2)
VLC media player 3.0.16 Vetinari
Command Line Interface initialized. Type `help' for help.

I just repeated the whole list of commands again, including: sudo snap install vlc. Then rebooted. Output of next attempt:

david@desktop-2:~$ which vlc
/usr/bin/vlc
david@desktop-2:~$ vlc rtsp://192.168.1.195:554/ch04/0
VLC media player 3.0.16 Vetinari (revision 3.0.13-8-g41878ff4f2)
VLC media player 3.0.16 Vetinari Command Line Interface initialized.
Type `help' for help.

It did not laucnch vlc.

I returned to the original question, and then went to the first Edit I could find below that. Otherwise I don't know where to add information. Result of latest instruction: "/snap/bin/vlc rtsp://192.168.1.195:554/ch04/0 ". There was no response, it's till just sitting there waiting for something. It only changed when I stopped it with Cntrl-C.

"/snap/bin/vlc" does nothing, cursor sits there flashing. So, yes, it seems that the snap version is not being installed despite the vommand to do so being correct. Is there another way to install it? A snap-store, or similar? But I jst checked with Navigator, and the file /snap/bin/vlc exists. Curiouser and curiouser.

I tried something else.

1. Using Synaptic, I removed everthing vlc.
2. Back at the terminal, I then did this: david@desktop-2:~$ sudo snap install vlc [sudo] password for david: snap "vlc" is already installed, see 'snap help refresh' david@desktop-2:~$ david@desktop-2:~$ sudo snap refresh All snaps up to date. david@desktop-2:~$ sudo snap remove vlc vlc removed (snap data snapshot saved) david@desktop-2:~$ sudo snap install vlc vlc 3.0.20-1-g2617de71b6 from VideoLAN✓ installed david@desktop-2:~$ /snap/bin/vlc rtsp://192.168.1.195:554/ch04/0 ^C {NO ACTION}. david@desktop-2:~$ vlc bash: /usr/bin/vlc: No such file or directory david@desktop-2:~$ cd /snap/bin david@desktop-2:/snap/bin$ ls firefox get-iplayer.get-iplayer-cgi firefox.geckodriver snap-store geckodriver snap-store.ubuntu-software get-iplayer snap-store.ubuntu-software-local-file get_iplayer vlc get_iplayer.cgi zoom-client firefox get-iplayer.get-iplayer-cgi firefox.geckodriver snap-store geckodriver snap-store.ubuntu-software get-iplayer snap-store.ubuntu-software-local-file get_iplayer vlc get_iplayer.cgi zoom-client

Is there any point in removing vlc from /snap/bin, and then re-installing? At he moment, vlc is said to be installed, but does not open. /snap/bin/vlc exists, but does not launch. As far as I know, I have followed the instructions to remove the old vlc and install the snap version. But it does not work. The only thing I can think of is to install an older version.

I'm trying to get LUKS encryption to work on my Orange PI 5. I take the following steps:

1. Install the image on an sd card.
2. copy the contents of the sd card to te nvme drive using dd
3. Remove the sd and boot from the ssd which works fine
4. Boot again from the sd card
5. Remove the 2nd partition and create 2 new partitions, 1 for /boot and one for LUKS I now have 3 partitions, 1 containing I guess the u-boot stuff and is 4M in size, 1 of 512M for /boot and 1 containing the rest.
6. I know create the LUKS container and format and mount the /boot and /dev/mapper/nvme_root
7. I use rsync to sync the files from the sd card to the mounts. Now in theory the contants is the same as on the sd card.
8. I chroot in to the nvme_root mount and I update the /etc/crypttab to:

nvme_root UUID=YOUR_UUID_HERE none luks,discard

9. I update the /etc/fstab to:

/dev/mapper/nvme_root  /              ext4    defaults,errors=remount-ro 0      1
/dev/nvme0n1p2         /boot          ext4    defaults               0      2

10. Now I run u-boot-update and update-initramfs -u -k all

Now I reboot without sd card and I was hoping to get some kind password prompt or some kind of error but the screen stays black.

Could you please walk me through the steps I should take to get this working? Or point me in some direction that I might be missing?

I've tried both the original Ubuntu image as well as https://github.com/Joshua-Riek/ubuntu-rockchip but both give the same outcome.

I have a dual-boot setup with Windows 11 (BitLocker off) and Ubuntu 22.04 (LUKS encrypted). I need to upgrade to 24.04. The default upgrade won't work because the /boot partition is too small and cannot be resized easily because it's encrypted. Either way, I have already formatted the / partition and am trying to do an encrypted Ubuntu 24.04 install.

I am following these steps:

1. Launch Ubuntu from USB drive, open the Installer and click Next a few times.
2. On the "Disk setup" page, select "Erase disk and install Ubuntu", then select "Advanced features...", then select "Use LVM and encryption".
3. Now select "Manual installation" and click "Next".

At this step, I expect to set the passphrase for the encryption, but I don't get any option for that. I have already run the full installer once and have got the fresh Ubuntu 24.04 installation working, however, it's not encrypted.

Can someone please guide me on the encrypted setup? I am fine formatting the partition again as there is no data.

I have a problem similar to this post, with bluetooth working but not detecting any devices (audio headset, speakers, smartphone) . I tried the classical troubleshooting for bluetooth, which did not work. I also used the latest jeremy31 btusb patch, with secureboot disabled :

sudo apt install git dkms
git clone https://github.com/jeremyb31/bluetooth-6.14.git
sudo dkms add ./bluetooth-6.14
sudo dkms install btusb/4.3

But it didn't work.

My bluetooth info below :

lsmod | grep bluetooth
bluetooth            1011712  44 btrtl,btmtk,btintel,btbcm,bnep,btusb,rfcomm

sudo systemctl status bluetooth
● bluetooth.service - Bluetooth service
     Loaded: loaded (/usr/lib/systemd/system/bluetooth.service; enabled; preset>
     Active: active (running) since Tue 2025-09-02 12:12:26 CEST; 12min ago
       Docs: man:bluetoothd(8)
   Main PID: 4555 (bluetoothd)
     Status: "Running"
      Tasks: 1 (limit: 18546)
     Memory: 972.0K (peak: 1.6M)
        CPU: 53ms
     CGroup: /system.slice/bluetooth.service
             └─4555 /usr/libexec/bluetooth/bluetoothd

sept. 02 12:12:26 **-ASUS-Vivobook-14-X1405VAP bluetoothd[4555]: Endpo>
sept. 02 12:12:26 **-ASUS-Vivobook-14-X1405VAP bluetoothd[4555]: Endpo>
sept. 02 12:12:26 **-ASUS-Vivobook-14-X1405VAP bluetoothd[4555]: Endpo>
sept. 02 12:12:26 **-ASUS-Vivobook-14-X1405VAP bluetoothd[4555]: Endpo>
sept. 02 12:12:26 **-ASUS-Vivobook-14-X1405VAP bluetoothd[4555]: Endpo>
sept. 02 12:12:26 **-ASUS-Vivobook-14-X1405VAP bluetoothd[4555]: Endpo>
sept. 02 12:12:26 **-ASUS-Vivobook-14-X1405VAP bluetoothd[4555]: Endpo>
sept. 02 12:12:26 **-ASUS-Vivobook-14-X1405VAP bluetoothd[4555]: Endpo>
sept. 02 12:12:26 **-ASUS-Vivobook-14-X1405VAP bluetoothd[4555]: Endpo>
sept. 02 12:12:26 **-ASUS-Vivobook-14-X1405VAP bluetoothd[4555]: Endpo>

HCI Config:

hciconfig
hci0:   Type: Primary  Bus: USB
    BD Address: 58:CD:C9:AC:FA:F6  ACL MTU: 1021:8  SCO MTU: 255:12
    UP RUNNING 
    RX bytes:2531 acl:0 sco:0 events:233 errors:0
    TX bytes:12940 acl:0 sco:0 commands:229 errors:0

lsusb; sudo dmesg |egrep -i 'blue|firm'
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 1038:184c SteelSeries ApS SteelSeries Rival 3
Bus 001 Device 003: ID 3277:0036 ShineTech USB2.0 HD UVC WebCam
Bus 001 Device 004: ID 0489:e112 Foxconn / Hon Hai Bluetooth Radio
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
[    1.554154] usb 1-10: Product: Bluetooth Radio
[    7.551313] Bluetooth: Core ver 2.22
[    7.551345] NET: Registered PF_BLUETOOTH protocol family
[    7.551347] Bluetooth: HCI device and connection manager initialized
[    7.551351] Bluetooth: HCI socket layer initialized
[    7.551353] Bluetooth: L2CAP socket layer initialized
[    7.551358] Bluetooth: SCO socket layer initialized
[    8.888369] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    8.888375] Bluetooth: BNEP filters: protocol multicast
[    8.888380] Bluetooth: BNEP socket layer initialized
[    8.891777] Bluetooth: MGMT ver 1.23
[   11.473253] Bluetooth: RFCOMM TTY layer initialized
[   11.473264] Bluetooth: RFCOMM socket layer initialized
[   11.473271] Bluetooth: RFCOMM ver 1.11

Would you have any idea to fix this ? Thank you very much,

I'm new to Linux, so I use Linux on dualboot. At the first time of installing Ubuntu, the brightness slider was working fine but when I made some updates + installed an Nvidia driver the slider is not doing anything anymore. Tried adding GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor to /etc/default/grub but didn't work. Tried to install Brightness Control as a temporary solution but even that wasn't working. The /sys/class/backlight folder has two folder in it; amdgpu_bl0 and ideapad, brightness slider only effect the files included in ideapad folder. What should I do? System specs: Ryzen 5 4600H GTX 1650 Ti

MobaXterm v21.1 connects to Ubuntu 20.04.3 LTS server through SSH disconnects all the time after short idle time, with this error: network error: software caused connection abort. I tried everything written here: https://programmerah.com/mobaxterm-connects-to-ubuntu-server-through-ssh-network-error-software-caused-connection-abort-43897/

• changed setting of Mobaextrem to keep alive
• edited /etc/ssh/sshd_config
  • TCPKeepAlive yes
  • ClientAliveInterval 60

I even left a top command running in the terminal, didn't help.

Is there an option that the disconnect is coming from the Ubuntu side ? Any idea how to solve it will be much appreciated.

** edit **

checking /var/log/auth.log

I see:

Mar  3 01:12:09 COSDEVVIS12 sshd[1529012]: Timeout, client not responding from user naomi <myip> port 59737

Beginning of /etc/ssh/sshd_config is:

#       $OpenBSD: sshd_config,v 1.103 2018/04/09 20:41:22 tj Exp $

# This is the sshd server system-wide configuration file.  See
# sshd_config(5) for more information.
/etc/ssh/sshd_config.d/*.conf

I run

/usr/sbin/sshd -ddd -p 10022

I get:

/etc/ssh/sshd_config: line 5: Bad configuration option: /etc/ssh/sshd_config.d/*.conf

...

/etc/ssh/sshd_config: terminating, 1 bad configuration options

I have been trying to get snap working on my Ubuntu machine for a while, but got nowhere. So I decided to upgrade to the latest LTS version of 20.04.

error: system does not fully support snapd: cannot mount squashfs image using "squashfs": mount:
       /tmp/sanity-mountpoint-760118298: wrong fs type, bad option, bad superblock on /dev/loop0,
       missing codepage or helper program, or other error.

Everything seeemed to install ok and I got the prompt about choosing a version of LXD. I chose 4.0 as it recommended.

However, now when I try to install anything using apt I get the following error (still related to snap):

Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies.
 lxd-client : Depends: lxd (>= 1:0.9) but it is not installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

Then when I run sudo apt --fix-broken install, it tries to use snap and I get this:

Do you want to continue? [Y/n] y
Preconfiguring packages ...
(Reading database ... 290280 files and directories currently installed.)
Preparing to unpack .../archives/lxd_1%3a0.9_all.deb ...
=> Installing the LXD snap
==> Checking connectivity with the snap store
==> Installing the LXD snap from the 4.0 track for ubuntu-20.04
error: system does not fully support snapd: cannot mount squashfs image using "squashfs": mount:
       /tmp/sanity-mountpoint-353261804: wrong fs type, bad option, bad superblock on /dev/loop0,
       missing codepage or helper program, or other error.
dpkg: error processing archive /var/cache/apt/archives/lxd_1%3a0.9_all.deb (--unpack):
 new lxd package pre-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 /var/cache/apt/archives/lxd_1%3a0.9_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

I cannot install anything now as this keeps going around in circles.

$ lxd version

Command 'lxd' not found, but can be installed with:

sudo snap install lxd            # version 4.7, or
sudo apt  install lxd-installer  # version 1
sudo apt  install lxd            # version 1:0.9

See 'snap info lxd' for additional versions.

$ sestatus

Command 'sestatus' not found, but can be installed with:

sudo apt install policycoreutils

After upgrade ubuntu from 19.10 to 20.4. WIFI driver is broke and bluetooth stopped working.

I tried to download the AX200 driver from Intel official website and copy the firmware to /lib/firmware It didn't really help. Installing backport-iwlwifi also didn't work. Can anyone help? Thanks in advance.

 dmesg | grep iwl

[   12.634574] iwlwifi: unknown parameter 'auto_agg' ignored
[   13.094608] iwlwifi: probe of 0000:52:00.0 failed with error -110
[  687.251110] iwlwifi: unknown parameter 'auto_agg' ignored
[  687.705909] iwlwifi: probe of 0000:52:00.0 failed with error -110

lshw -C network
WARNING: you should run this program as super-user.
  *-network UNCLAIMED       
       description: Network controller
       product: Wi-Fi 6 AX200
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:52:00.0
       version: 1a
       width: 64 bits
       clock: 33MHz
       capabilities: cap_list
       configuration: latency=0
       resources: memory:ebb00000-ebb03fff

lspci -nnk | grep 0280 -A3

52:00.0 Network controller [0280]: Intel Corporation Wi-Fi 6 AX200 [8086:2723] (rev 1a)
    Subsystem: Intel Corporation Wi-Fi 6 AX200 [8086:0080]
    Kernel modules: iwlwifi, wl
53:00.0 SD Host controller [0805]: Genesys Logic, Inc Device [17a0:9755]

Only Ethernet is available, WIFI is completely gone.

I am asking this question because I was facing the same issue and could not find a complete solution so here it is.
Steps to follow :
1. Open Files app, go to home.
2. Open .bashrc file using text editor (hit ctrl+H if .bashrc file is not seen)
3. Scroll all the way to the end and type this -

export PATH="$HOME/.local/bin:$PATH"

And save the file.
4. Now open the terminal and type -

source ~/.bashrc

5. You can either use option 4 or just restart your computer.

I am trying to install apache-tomcat-9.0.33 on a 64 bit machine running Ubuntu 18.04.4 LTS. I followed the script given on https://linuxize.com/post/how-to-install-tomcat-9-on-ubuntu-18-04/. Everything went well until near the end of step 4. When I tried to start tomcat I got the following:

~$ sudo systemctl start tomcat
Job for tomcat.service failed because the control process exited with error code.
See "systemctl status tomcat.service" and "journalctl -xe" for details.

The output from these commands suggested to me that the problem was caused by incorrect permissions.

I executed all of the suggestions in the following:

Unable to start Apache Tomcat 8.5.4 on Ubuntu 16.04

Now the permissions for every .sh file in /opt/tomcat/bin/ are set to "-rwxr-xr-x" and every file in that directory has "tomcat" as owner and as group. Further, every directory in the path /opt/tomcat/bin/ has permissions "drwxr-xr-x" and "tomcat" as owner and as group.

I checked that the value for JAVA_HOME given in /etc/systemd/system/tomcat.service is the same as given by printenv JAVA_HOME.

Start still failed.

I rebooted the machine, checked that there was no stale pid, tried again, and start failed:

~$ ps ax | grep tomcat
 4795 tty2     Sl+    0:16 gedit /home/coffeepot/Desktop/tomcat fail 1.txt
 5379 pts/0    S+     0:00 grep --color=auto tomcat

~$ sudo systemctl start tomcat
Job for tomcat.service failed because the control process exited with error code.
See "systemctl status tomcat.service" and "journalctl -xe" for details.

sudo systemctl status tomcat
● tomcat.service - Apache Tomcat Web Application Container
   Loaded: loaded (/etc/systemd/system/tomcat.service; disabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Tue 2020-04-21 09:58:12 EDT; 15s ago
  Process: 5233 ExecStart=/opt/tomcat/latest/bin/startup.sh (code=exited, status=0/SUCCESS)
 Main PID: 5243 (code=exited, status=2)

Apr 21 09:58:12 m11 systemd[1]: Starting Apache Tomcat Web Application Container...
Apr 21 09:58:12 m11 startup.sh[5233]: Existing PID file found during start.
Apr 21 09:58:12 m11 startup.sh[5233]: Removing/clearing stale PID file.
Apr 21 09:58:12 m11 startup.sh[5233]: Tomcat started.
Apr 21 09:58:12 m11 systemd[1]: Started Apache Tomcat Web Application Container.
Apr 21 09:58:12 m11 systemd[1]: tomcat.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Apr 21 09:58:12 m11 systemd[1]: tomcat.service: Failed with result 'exit-code'.

journalctl -xe
-- 
-- The result is RESULT.
Apr 21 09:58:11 m11 systemd[1]: Dependency failed for /mnt/28db1409-5a51-40d2-84ad-3b4496c805ec.
-- Subject: Unit mnt-28db1409\x2d5a51\x2d40d2\x2d84ad\x2d3b4496c805ec.mount has failed
-- Defined-By: systemd
-- Support: 
-- 
-- Unit mnt-28db1409\x2d5a51\x2d40d2\x2d84ad\x2d3b4496c805ec.mount has failed.
-- 
-- The result is RESULT.
Apr 21 09:58:11 m11 systemd[1]: mnt-28db1409\x2d5a51\x2d40d2\x2d84ad\x2d3b4496c805ec.mount: Job mnt-28db1409\x2d5a51\x2d40d2\x2d84ad\x2d3b4496c805ec.mount/start failed with result 'dependency'.
Apr 21 09:58:11 m11 systemd[1]: dev-disk-by\x2duuid-28db1409\x2d5a51\x2d40d2\x2d84ad\x2d3b4496c805ec.device: Job dev-disk-by\x2duuid-28db1409\x2d5a51\x2d40d2\x2d84ad\x2d3b4496c805ec.device/start failed with
Apr 21 09:58:12 m11 sudo[5230]: coffeepot : TTY=pts/0 ; PWD=/home/coffeepot ; USER=root ; COMMAND=/bin/systemctl start tomcat
Apr 21 09:58:12 m11 sudo[5230]: pam_unix(sudo:session): session opened for user root by (uid=0)
Apr 21 09:58:12 m11 systemd[1]: Starting Apache Tomcat Web Application Container...
-- Subject: Unit tomcat.service has begun start-up
-- Defined-By: systemd
-- Support: 
-- 
-- Unit tomcat.service has begun starting up.
Apr 21 09:58:12 m11 startup.sh[5233]: Existing PID file found during start.
Apr 21 09:58:12 m11 startup.sh[5233]: Removing/clearing stale PID file.
Apr 21 09:58:12 m11 startup.sh[5233]: Tomcat started.
Apr 21 09:58:12 m11 systemd[1]: Started Apache Tomcat Web Application Container.
-- Subject: Unit tomcat.service has finished start-up
-- Defined-By: systemd
-- Support: 
-- 
-- Unit tomcat.service has finished starting up.
-- 
-- The start-up result is RESULT.
Apr 21 09:58:12 m11 systemd[1]: tomcat.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Apr 21 09:58:12 m11 systemd[1]: tomcat.service: Failed with result 'exit-code'.
Apr 21 09:58:12 m11 sudo[5230]: pam_unix(sudo:session): session closed for user root
Apr 21 09:58:17 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:17 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:17 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:17 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:18 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:18 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:19 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:19 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:19 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:19 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:19 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:19 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:28 m11 sudo[5245]: coffeepot : TTY=pts/0 ; PWD=/home/coffeepot ; USER=root ; COMMAND=/bin/systemctl status tomcat
Apr 21 09:58:28 m11 sudo[5245]: pam_unix(sudo:session): session opened for user root by (uid=0)
Apr 21 09:58:28 m11 sudo[5245]: pam_unix(sudo:session): session closed for user root
Apr 21 09:58:43 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:43 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:43 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:43 m11 gnome-shell[4476]: Ignoring excess values in shadow definition
Apr 21 09:58:48 m11 PackageKit[1334]: get-updates transaction /1028_ecebadde from uid 1000 finished with success after 398ms

What am I missing? How can I get tomcat to work?

I was following the steps from an Ask Ubuntu answer (Increase partition size on which Ubuntu is installed?) to enlarge an Ubuntu VM I have and I'm wondering what is actually being removed here:

Partition #1 contains a ext4 signature

Do you want to remove the signature? [Y]es/[N]o:

I found this definition:

File Signature or Magic Number is a protocol set of constant numerical and text values used to identify file format. In other words, every file type requires a unique signature in order for an operating system to recognize it, classify it and show it to an end user

So files have signatures and file systems have signatures as well? If this is the case would removing the signature just replace the signature with the same value, if I'm just enlarging the VM with the same ext4 type filesystem?

Follow up question: Is Ubuntu asking me permission to delete the signature to make me aware that this will erase an entire partition?

I'm working on a Hadoop installation done by someone else.

Ubuntu 18.04.1 LTS
Hadoop version 3.0.3
Java open jdk 11 (auto mode) and 8 (manual mode)

Currently Hadoop runs with Java 11 but I want to configure Hadoop to run with Java 8 because Hive doesn't work with Java 11.

Following is the Java configuration in my virtual machine.

hadoop@hadoop-VirtualBox:~$ whereis java
java: /usr/bin/java /usr/share/java /usr/share/man/man1/java.1.gz

hadoop@hadoop-VirtualBox:~$ update-alternatives --list java
/usr/lib/jvm/java-11-openjdk-amd64/bin/java
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java

hadoop@hadoop-VirtualBox:~$ java -version
openjdk version "10.0.2" 2018-07-17
OpenJDK Runtime Environment (build 10.0.2+13-Ubuntu-1ubuntu0.18.04.1)
OpenJDK 64-Bit Server VM (build 10.0.2+13-Ubuntu-1ubuntu0.18.04.1, mixed mode)

hadoop@hadoop-VirtualBox:~$ sudo update-alternatives --config java

There are 2 choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                            Priority   Status
------------------------------------------------------------
* 0            /usr/lib/jvm/java-11-openjdk-amd64/bin/java      1101      auto mode
  1            /usr/lib/jvm/java-11-openjdk-amd64/bin/java      1101      manual mode
  2            /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java   1081      manual mode


hadoop@hadoop-VirtualBox:~$ ls -lh /usr/lib/jvm/
total 8.0K
lrwxrwxrwx 1 root root   25 Apr  8 14:16 default-java -> java-1.11.0-openjdk-amd64
lrwxrwxrwx 1 root root   21 Apr 21 14:41 java-1.11.0-openjdk-amd64 -> java-11-openjdk-amd64
drwxr-xr-x 9 root root 4.0K Aug 23 12:28 java-11-openjdk-amd64
lrwxrwxrwx 1 root root   20 Apr 26 16:59 java-1.8.0-openjdk-amd64 -> java-8-openjdk-amd64
drwxr-xr-x 7 root root 4.0K Aug 17 08:24 java-8-openjdk-amd64

I was looking at this thread to configure Java however in the .bashrc or /etc/environment file there is no entry on JAVA_HOME. The only place JAVA_HOME is specified is in the /usr/local/hadoop/etc/hadoop/hadoop-env.sh file. In the file JAVA_HOME is specified as follows:

export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64

With the above configuration Hadoop runs without any problem. I tried changing the JAVA_HOME in the hadoop-env.sh file to /usr/lib/jvm/java-8-openjdk-amd64 and tried running Hadoop. But this gives an error

Unrecognized option: --add-modules Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit.

I tried changing the priority of the Java version using sudo update-alternatives --config java along with the hadoop-env.sh alteration but it still gives the same error.

In order to change the Java version do I need to add the path to .bashrc and /etc/environment as well? I would like to know what changed needs to be done.

I am running Ubuntu 17.04 on a Dell desktop computer.I have not been able to update ClamAV/ClamTK virus signatures for some time. The antivirus signatures number is "23296." When I try sudo freshclam I get the following error messages:

ERROR: Can't open /var/log/clamav/freshclam.log in append mode (check permissions!).
ERROR: Problem with internal logger (UpdateLogFile = /var/log/clamav/freshclam.log).

This might be related: I am unable to change the scheduled time for daily updates or a daily scan.

Any assistance would be greatly appreciated.

I am using Lubuntu 16.10 installed on 120 GB drive. However, I also have a secondary 1TB hard drive full of personal data and similar valuable information, yet I am unable to mount it:

jan@Bondy:/$ sudo mount /dev/sdb2 /media/diskD
mount: wrong fs type, bad option, bad superblock on /dev/sdb2,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       doesg | tail or so.

Output of fdisk:

Disk /dev/sdb: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes/4096 bytes
Disklabel type: dos
Disk identifier: 0xcf802303

Device     Boot      Start        End    Sectors  Size Id Type
/dev/sdb1             2048   32507903   32505856 15.5G 27 Hidden NTFS WinRE
/dev/sdb2        302507904 1953521663 1921013760  916G  7 HPFS/NTFS/exFAT

I am not sure. Is something wrong with my NTFS filesystem? Might I need to format my drive again?

EDIT: After I split C drive into 2 partitions and installed Lubuntu again, the Lubuntu was still unable to load second drive. To the second partition I installed windows, that is able to work with second drive without any problem.

Editor's note:
This post has originally contained a couple screenshots of console text. These have since been replaced with a transcription.

I set up a PPTP VPN server (insecure, I know, but this effort is primarily a learning experience) using PPTPD on a spare Ubuntu 15.10 desktop I had laying around, but am unable to connect to it from Linux or Windows. When I attempt to connect from an Antergos machine, I get the following output from Network Manager:

Mar 15 10:21:14 mblasco-XPS NetworkManager[377]: <info>  Starting VPN service 'pptp'...
Mar 15 10:21:14 mblasco-XPS NetworkManager[377]: <info>  VPN service 'pptp' started (org.freedesktop.NetworkManager.pptp), PID 2903
Mar 15 10:21:14 mblasco-XPS NetworkManager[377]: <info>  VPN service 'pptp' appeared; activating connections
Mar 15 10:21:14 mblasco-XPS NetworkManager[377]: <info>  VPN plugin state changed: init (1)
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: <info>  VPN connection 'HawkHouse' (ConnectInteractive) reply received.
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: <info>  VPN plugin state changed: starting (3)
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: ** Message: pppd started with pid 2910
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: <info>  VPN connection 'HawkHouse' (Connect) reply received.
Mar 15 10:21:15 mblasco-XPS pppd[2910]: Plugin /usr/lib/pppd/2.4.7/nm-pptp-pppd-plugin.so loaded.
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: Plugin /usr/lib/pppd/2.4.7/nm-pptp-pppd-plugin.so loaded.
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: ** Message: nm-pptp-ppp-plugin: (plugin_init): initializing
Mar 15 10:21:15 mblasco-XPS pppd[2910]: pppd 2.4.7 started by root, uid 0
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 3 / phase 'serial connection'
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: <info>  (ppp0): new Generic device (carrier: UNKNOWN, driver: 'unknown', ifindex: 16)
Mar 15 10:21:15 mblasco-XPS pppd[2910]: Using interface ppp0
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: Using interface ppp0
Mar 15 10:21:15 mblasco-XPS pppd[2910]: Connect: ppp0 <--> /dev/pts/1
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: Connect: ppp0 <--> /dev/pts/1
Mar 15 10:21:15 mblasco-XPS NetworkManager[377]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 5 / phase 'establish'
Mar 15 10:21:15 mblasco-XPS pptp[2912]: nm-pptp-service-2903 log[main:pptp.c:333]: The synchronous pptp option is NOT activated
Mar 15 10:21:15 mblasco-XPS pptp[2922]: nm-pptp-service-2903 log[ctrlp_rep:pptp_ctrl.c:258]: Sent control packet type is 1 'Start-Control-Connection-Request'
Mar 15 10:21:15 mblasco-XPS pptp[2922]: nm-pptp-service-2903 log[ctrlp_disp:pptp_ctrl.c:758]: Received Start Control Connection Reply
Mar 15 10:21:15 mblasco-XPS pptp[2922]: nm-pptp-service-2903 log[ctrlp_disp:pptp_ctrl.c:792]: Client connection established.
Mar 15 10:21:16 mblasco-XPS pptp[2922]: nm-pptp-service-2903 log[ctrlp_rep:pptp_ctrl.c:258]: Sent control packet type is 7 'Outgoing-Call-Request'
Mar 15 10:21:16 mblasco-XPS pptp[2922]: nm-pptp-service-2903 log[ctrlp_disp:pptp_ctrl.c:877]: Received Outgoing Call Reply.
Mar 15 10:21:16 mblasco-XPS pptp[2922]: nm-pptp-service-2903 log[ctrlp_disp:pptp_ctrl.c:916]: Outgoing call established (call ID 0, peer's call ID 11).
Mar 15 10:21:16 mblasco-XPS pppd[2910]: Modem hangup
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: Modem hangup
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 11 / phase 'disconnect'
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: Connection terminated.
Mar 15 10:21:16 mblasco-XPS pppd[2910]: Connection terminated.
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <warn>  (ppp0): failed to disable userspace IPv6LL address handling
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <warn>  VPN plugin failed: connect-failed (1)
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: ** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 1 / phase 'dead'
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: ** Message: nm-pptp-ppp-plugin: (nm_exit_notify): cleaning up
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: ** (nm-pptp-service:2903): WARNING **: pppd exited with error code 16
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <warn>  VPN plugin failed: connect-failed (1)
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <warn>  VPN plugin failed: connect-failed (1)
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <info>  VPN plugin state changed: stopped (6)
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <info>  VPN plugin state change reason: unknown (0)
Mar 15 10:21:16 mblasco-XPS NetworkManager[377]: <warn>  error disconnecting VPN: Could not process the request because no VPN connection was active.

I had this working with the same configuration on an Antergos machine previously, but I cannot seem to get it working under Ubuntu.

I have my router configured to forward port 1723 to the Ubuntu desktop, and it appears from the connection log above that it does make it through and begins communicating with the server, but then drops the connection.

Below are the iptables rules present on the Ubuntu server hosting the VPN:

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     gre  --  anywhere             anywhere            
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:1723 state NEW

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         
TCPMSS     tcp  --  192.168.1.0/24       anywhere             tcp flags:SYN,RST/SYN TCPMSS clamp to PMTU
ACCEPT     gre  --  anywhere             anywhere            

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

Any insight? Thanks in advance!

How can I disable the Keyboard Shortcut ctrl+shift+c in Google Chrome to bring up the Developer Tools console?

I find myself trying to copy+paste content from the browser and mistakenly typing ctrl+shift+c when I really want to do ctrl+c instead.

How can I disable the current keyboard binding or change ctrl+shift+c to do the same as ctrl+c in Google Chrome?

I haven't tried this command on Ubuntu (for obvious reasons) so I am not sure if Ubuntu will allow its execution. But it's famous for deleting everything. Just out of curiosity, what happens when the kernel and /bin are deleted? How does rm maintain a run time stack? How does rm manage to communicate with the file system and complete deletion? How does it communicate with hardware?

I have been trying to install Ubuntu on this laptop forever. I have my USB drive all setup and ready to go, but when I try booting from my flash drive it just shows a blank screen with a blinking cursor. I can't even get to the screen where it asks you to either try or to install Ubuntu.

I have tested this USB with other computers and it works with them but not this one. It is a Sony Vaio VGN-FE550G(PCG-7H1L) and it uses an old Phoenix BIOS. And no it isn't the Phoenix Awards BIOS,it is just the Phoenix BIOS. IF anyone can help me I would be very happy.

Title says it all, I've tried wifi-hostapd-app but I always run into trouble while installing one of its dependencies, dnsmasq specifically. I read one of the workarounds is to disable Ubuntu's Network Manager, I'd rather not do that.