I'm not sure what happened, but I am running 4 Dell Optiplex machines and they all have the same problems going back several weeks. General slowness, choppyness, high CPU, slow load times on web pages and so on. The telltale sign is choppy mouse that freezes momentarily when a tooltip pops over the GUI or when the machine is processing.

All machines are from the Dell Optiplex series. They all have integrated, Intel video cards. They're all running 24.04. I've tried rolling back the kernel, switching from Wayland to Xorg, and disabling Gnome extensions. I have not read of others having this specific problem but it can't be a coincidence if it happened to all my machines at the same time. Any ideas how to fix this?

I'm wondering if Ubuntu 22.04.* can support AMD embedded P132 processor and VCN(Video Codec) or not. If yes, From which version can support P132 and VCN?

Thank you

Stephen

I am trying to fix a problem executing Kate that somehow got installed through SNAP a while ago.

In trying to start it today but I got an error message: /snap/kate/218/usr/bin/kate: error while loading shared libraries: libX11.so.6: cannot open shared object file: No such file or directory

It was working fine today. I did get a system update. I tried to reinstall that libxx but it did not fix the problem.

So I tried to remove kate and install it again but it installed a hudge amount of files and it says it still is not there? Check attached text file for the actual install attempt.

What happened?

What got installed instead?

How do I remove it?

Had to reduce text because it was too big and I cannot attach a text file.

sudo apt install kate
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  javascript-common kactivities-bin kactivitymanagerd kate5-data kded5
  keditbookmarks kio kpackagelauncherqml kpackagetool5 ktexteditor-data
  ktexteditor-katepart kuserfeedback-doc kwayland-data kwayland-integration
  libdbusmenu-qt5-2 libdouble-conversion3 libhfstospell11 libjs-jquery
  libjs-underscore libkf5activities5 libkf5archive-data libkf5archive5
  libkf5attica5 libkf5auth-data libkf5authcore5 libkf5bookmarks-data
  libkf5bookmarks5 libkf5calendarevents5 libkf5codecs-data libkf5codecs5
  libkf5completion-data libkf5completion5 libkf5config-bin libkf5config-data
  libkf5configcore5 libkf5configgui5 libkf5configwidgets-data
  libkf5configwidgets5 libkf5coreaddons-data libkf5coreaddons5 libkf5crash5
  libkf5dbusaddons-bin libkf5dbusaddons-data libkf5dbusaddons5
  libkf5declarative-data libkf5declarative5 libkf5doctools5
  libkf5globalaccel-bin libkf5globalaccel-data libkf5globalaccel5
  libkf5globalaccelprivate5 libkf5guiaddons-bin libkf5guiaddons-data
  libkf5guiaddons5 libkf5i18n-data libkf5i18n5 libkf5iconthemes-bin
  libkf5iconthemes-data libkf5iconthemes5 libkf5itemviews-data
  libkf5itemviews5 libkf5jobwidgets-data libkf5jobwidgets5 libkf5kiocore5
  libkf5kiofilewidgets5 libkf5kiogui5 libkf5kiontlm5 libkf5kiowidgets5
  libkf5kirigami2-5 libkf5newstuff-data libkf5newstuff5 libkf5newstuffcore5
  libkf5newstuffwidgets5 libkf5notifications-data libkf5notifications5
  libkf5package-data libkf5package5 libkf5parts-data libkf5parts-plugins
  libkf5parts5 libkf5plasma5 libkf5plasmaquick5 libkf5quickaddons5
  libkf5service-bin libkf5service-data libkf5service5 libkf5solid5
  libkf5solid5-data libkf5sonnet5-data libkf5sonnetcore5 libkf5sonnetui5
  libkf5syndication5abi1 libkf5syntaxhighlighting-data
  libkf5syntaxhighlighting5 libkf5texteditor-bin libkf5texteditor5
  libkf5textwidgets-data libkf5textwidgets5 libkf5wallet-bin libkf5wallet-data
  libkf5wallet5 libkf5waylandclient5 libkf5widgetsaddons-data
  libkf5widgetsaddons5 libkf5windowsystem-data libkf5windowsystem5
  libkf5xmlgui-bin libkf5xmlgui-data libkf5xmlgui5 libkuserfeedback-l10n
  libkuserfeedbackcore1 libkuserfeedbackwidgets1 libkwalletbackend5-5 libmd4c0
  libpcre2-16-0 libpolkit-qt5-1-1 libqca-qt5-2 libqca-qt5-2-plugins
  libqt5concurrent5t64 libqt5core5t64 libqt5dbus5t64 libqt5gui5t64
  libqt5network5t64 libqt5printsupport5t64 libqt5qml5 libqt5qmlmodels5
  libqt5qmlworkerscript5 libqt5quick5 libqt5quickcontrols2-5
  libqt5quicktemplates2-5 libqt5sql5-sqlite libqt5sql5t64 libqt5svg5
  libqt5texttospeech5 libqt5waylandclient5 libqt5waylandcompositor5
  libqt5widgets5t64 libqt5x11extras5 libqt5xml5t64 libvoikko1
  libxcb-composite0 libxcb-record0 libxcb-xinerama0 libxcb-xinput0
  plasma-framework qml-module-org-kde-kconfig qml-module-org-kde-kirigami2
  qml-module-org-kde-kquickcontrols qml-module-org-kde-kquickcontrolsaddons
  qml-module-org-kde-newstuff qml-module-org-kde-userfeedback
  qml-module-qt-labs-folderlistmodel qml-module-qt-labs-settings
  qml-module-qtgraphicaleffects qml-module-qtqml qml-module-qtqml-models2
  qml-module-qtquick-controls qml-module-qtquick-controls2
  qml-module-qtquick-dialogs qml-module-qtquick-layouts
  qml-module-qtquick-privatewidgets qml-module-qtquick-templates2
  qml-module-qtquick-window2 qml-module-qtquick2 qt5-gtk-platformtheme
  qtspeech5-speechd-plugin qttranslations5-l10n qtwayland5 sonnet-plugins
  
Suggested packages:
  apache2 | lighttpd | httpd darcs exuberant-ctags git khelpcenter
  konsole-kpart mercurial subversion qgnomeplatform-qt5
  qt5-image-formats-plugins qt5-qmltooling-plugins voikko-fi hspell
  
The following NEW packages will be installed:
  javascript-common kactivities-bin kactivitymanagerd kate kate5-data kded5
  keditbookmarks kio kpackagelauncherqml kpackagetool5 ktexteditor-data
  ktexteditor-katepart kuserfeedback-doc kwayland-data kwayland-integration
  libdbusmenu-qt5-2 libdouble-conversion3 libhfstospell11 libjs-jquery
  libjs-underscore libkf5activities5 libkf5archive-data libkf5archive5
  libkf5attica5 libkf5auth-data libkf5authcore5 libkf5bookmarks-data
  libkf5bookmarks5 libkf5calendarevents5 libkf5codecs-data libkf5codecs5
  libkf5completion-data libkf5completion5 libkf5config-bin libkf5config-data
  libkf5configcore5 libkf5configgui5 libkf5configwidgets-data
  libkf5configwidgets5 libkf5coreaddons-data libkf5coreaddons5 libkf5crash5
  libkf5dbusaddons-bin libkf5dbusaddons-data libkf5dbusaddons5
  libkf5declarative-data libkf5declarative5 libkf5doctools5
  libkf5globalaccel-bin libkf5globalaccel-data libkf5globalaccel5
  libkf5globalaccelprivate5 libkf5guiaddons-bin libkf5guiaddons-data
  libkf5guiaddons5 libkf5i18n-data libkf5i18n5 libkf5iconthemes-bin
  libkf5iconthemes-data libkf5iconthemes5 libkf5itemviews-data
  libkf5itemviews5 libkf5jobwidgets-data libkf5jobwidgets5 libkf5kiocore5
  libkf5kiofilewidgets5 libkf5kiogui5 libkf5kiontlm5 libkf5kiowidgets5
  libkf5kirigami2-5 libkf5newstuff-data libkf5newstuff5 libkf5newstuffcore5
  libkf5newstuffwidgets5 libkf5notifications-data libkf5notifications5
  libkf5package-data libkf5package5 libkf5parts-data libkf5parts-plugins
  libkf5parts5 libkf5plasma5 libkf5plasmaquick5 libkf5quickaddons5
  libkf5service-bin libkf5service-data libkf5service5 libkf5solid5
  libkf5solid5-data libkf5sonnet5-data libkf5sonnetcore5 libkf5sonnetui5
  libkf5syndication5abi1 libkf5syntaxhighlighting-data
  libkf5syntaxhighlighting5 libkf5texteditor-bin libkf5texteditor5
  libkf5textwidgets-data libkf5textwidgets5 libkf5wallet-bin libkf5wallet-data
  libkf5wallet5 libkf5waylandclient5 libkf5widgetsaddons-data
  libkf5widgetsaddons5 libkf5windowsystem-data libkf5windowsystem5
  libkf5xmlgui-bin libkf5xmlgui-data libkf5xmlgui5 libkuserfeedback-l10n
  libkuserfeedbackcore1 libkuserfeedbackwidgets1 libkwalletbackend5-5 libmd4c0
  libpcre2-16-0 libpolkit-qt5-1-1 libqca-qt5-2 libqca-qt5-2-plugins
  libqt5concurrent5t64 libqt5core5t64 libqt5dbus5t64 libqt5gui5t64
  libqt5network5t64 libqt5printsupport5t64 libqt5qml5 libqt5qmlmodels5
  libqt5qmlworkerscript5 libqt5quick5 libqt5quickcontrols2-5
  libqt5quicktemplates2-5 libqt5sql5-sqlite libqt5sql5t64 libqt5svg5
  libqt5texttospeech5 libqt5waylandclient5 libqt5waylandcompositor5
  libqt5widgets5t64 libqt5x11extras5 libqt5xml5t64 libvoikko1
  libxcb-composite0 libxcb-record0 libxcb-xinerama0 libxcb-xinput0
  plasma-framework qml-module-org-kde-kconfig qml-module-org-kde-kirigami2
  qml-module-org-kde-kquickcontrols qml-module-org-kde-kquickcontrolsaddons
  qml-module-org-kde-newstuff qml-module-org-kde-userfeedback
  qml-module-qt-labs-folderlistmodel qml-module-qt-labs-settings
  qml-module-qtgraphicaleffects qml-module-qtqml qml-module-qtqml-models2
  qml-module-qtquick-controls qml-module-qtquick-controls2
  qml-module-qtquick-dialogs qml-module-qtquick-layouts
  qml-module-qtquick-privatewidgets qml-module-qtquick-templates2
  qml-module-qtquick-window2 qml-module-qtquick2 qt5-gtk-platformtheme
  qtspeech5-speechd-plugin qttranslations5-l10n qtwayland5 sonnet-plugins
0 upgraded, 170 newly installed, 0 to remove and 0 not upgraded.
Need to get 54.2 MB of archives.
After this operation, 238 MB of additional disk space will be used.
Do you want to continue? [Y/n] y

Get:1 http://ca.archive.ubuntu.com/ubuntu noble/universe amd64 libdouble-conversion3 amd64 3.3.0-1build1 [40.3 kB]
Get:2 http://ca.archive.ubuntu.com/ubuntu noble-updates/main amd64 libpcre2-16-0 amd64 10.42-4ubuntu2.1 [210 kB]
Get:3 http://ca.archive.ubuntu.com/ubuntu noble/universe amd64 libqt5core5t64 amd64 5.15.13+dfsg-1ubuntu1 [2,011 kB]
Get:4 http://ca.archive.ubuntu.com/ubuntu noble/universe amd64 libmd4c0 amd64 0.4.8-1build1 [42.3 kB]
...
Get:168 http://ca.archive.ubuntu.com/ubuntu noble/universe amd64 qttranslations5-l10n all 5.15.13-1 [1,964 kB]
Get:169 http://ca.archive.ubuntu.com/ubuntu noble/universe amd64 qtwayland5 amd64 5.15.13-1 [223 kB]
Get:170 http://ca.archive.ubuntu.com/ubuntu noble/universe amd64 sonnet-plugins amd64 5.115.0-0ubuntu5 [54.7 kB]
Fetched 54.2 MB in 5s (10.6 MB/s)            

Extracting templates from packages: 100%
Selecting previously unselected package libdouble-conversion3:amd64.
(Reading database ... 222234 files and directories currently installed.)
Preparing to unpack .../000-libdouble-conversion3_3.3.0-1build1_amd64.deb ...
Unpacking libdouble-conversion3:amd64 (3.3.0-1build1) ...
Selecting previously unselected package libpcre2-16-0:amd64.
Preparing to unpack .../001-libpcre2-16-0_10.42-4ubuntu2.1_amd64.deb ...
Unpacking libpcre2-16-0:amd64 (10.42-4ubuntu2.1) ...
Selecting previously unselected package libqt5core5t64:amd64.
...
Unpacking qtspeech5-speechd-plugin:amd64 (5.15.13-1) ...
Selecting previously unselected package qttranslations5-l10n.
Preparing to unpack .../167-qttranslations5-l10n_5.15.13-1_all.deb ...
Unpacking qttranslations5-l10n (5.15.13-1) ...
Selecting previously unselected package qtwayland5:amd64.
Preparing to unpack .../168-qtwayland5_5.15.13-1_amd64.deb ...
Unpacking qtwayland5:amd64 (5.15.13-1) ...
Selecting previously unselected package sonnet-plugins:amd64.
Preparing to unpack .../169-sonnet-plugins_5.115.0-0ubuntu5_amd64.deb ...
Unpacking sonnet-plugins:amd64 (5.115.0-0ubuntu5) ...
Setting up libkf5codecs-data (5.115.0-0ubuntu5) ...
Setting up javascript-common (11+nmu1) ...
Setting up libkf5package-data (5.115.0-0ubuntu5) ...
Setting up libkf5service-data (5.115.0-0ubuntu4) ...
Setting up libdouble-conversion3:amd64 (3.3.0-1build1) ...
Setting up libkf5config-data (5.115.0-0ubuntu5) ...
...
Processing triggers for gnome-menus (3.36.0-1.1ubuntu3) ...
Processing triggers for libc-bin (2.39-0ubuntu8.7) ...
Processing triggers for man-db (2.12.0-4build2) ...
Processing triggers for dbus (1.14.10-4ubuntu4.1) ...
Processing triggers for shared-mime-info (2.4-4) ...
Processing triggers for desktop-file-utils (0.27-2build1) ...
browserice:~$ kate
bash: /snap/bin/kate: No such file or directory
browserice:~$ sudo snap remove kate
snap "kate" is not installed
browserice:~$ 

Can anyone recommend some good disk data recovery software for Linux? Everything google comes up with seems to be for Mac and Windows and runs on Mac or Windows. I have 5 different flavors of Linux but no Mac or Windows. Any suggestions would be welcome

Ubuntu 22.04 LTS. In Settings, the Printers dialog has recently started to challenge me with a login to unlock it every time I touch it. Same for its Additional Printer Settings. I have not found where to turn it off.

Is it in Gnome? Cups? PolicyKit?

dpkg: error processing package kali-menu (--configure):

dependency problems - leaving unconfigured Errors were encountered while processing:

systemd network-manager

speech-dispatcher bluez

udev dhcpcd-base

speech-dispatcher-espeak-ng orca pipewire:arm64 polkitd openssh-server openssh-client upower pkexec openssh-client-gssapi wireplumber pipewire-pulse openssh-sftp-server kali-menu E: Sub-process /usr/bin/dpkg returned an error code (1)

I am attempting to use an RTX Pro 6000 Blackwell graphics card on Ubuntu 24.04.

However, I am writing to inform you that persistent issues have occurred after installing the graphics driver.

1. When installing versions 570, 580, 590, or versions 570-server, 580-server, and 590-server, a black screen appears after the Ubuntu logo loading screen, and the system freezes.

2. When installing versions 570-open, 580-open, and 590-open, the system freezes at the Ubuntu logo loading screen.

Below are the methods I have tried to resolve this issue:

1. Updated the BIOS to the latest version.

2. Installed kernel 6.8.0 or 6.17.0.

3. Disabled "New features."

4. Disabled Wayland. 5. Please run the command sudo apt install linux-headers-$(uname -r) build-essential dkms to install it.

5. I proceeded as described in https://stackoverflow.com/questions/79928532/installation-of-graphics-drivers-for-rtx-pro-6000-blackwell-and-24-04-environmen/79928538#79928538.

This issue also occurs on Windows. If only the graphics driver is installed on Windows, a black screen appears intermittently, and the system freezes or reboots.

Also, to help you identify my problem, I am providing my computer specifications.

1. AMD 9950X3D

2. MSI MAG X870E

3. DDR5-6000-CL30

4. PX-2200

If anyone knows the cause of this problem, I would appreciate your help.

DLNA

Chromecast

Ubuntu 22.04

UPnP

Smart TV

TCP/IP

I was editing a file that I assume was originally created with MS Office power point. When I was done with my edits and saved the file, the LibreOffice added blue dots and a box with text "Responsible: Text" on every page. How do I remove them?

I'm not too technical so please don't eat me.
I had an identical machine HP 14s dq3xxx with absolutely no problem running 24.04.4
Except one coffee spill too many and it died.

New Laptop, Win 11, turned off Bit Locker, installed 24.04.4.
On installation I turned Windows Bitlocker off. Just like last time.
Only the hard drive has gone, the only drive is described as a "card reader".
Has anyone got any thoughts on what I've done?

Thanks. Paul

Is it possible to build a user-space 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? :(

PS: The question is really to related to the ability to provide the app for people without admin access.

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...

I have an ASUS Vivobook 18 M1807HA with an AMD Radeon 780M integrated GPU running Ubuntu 24.04 (kernel 6.17.0-20-generic).

Problem

When running on battery power only, my laptop generates constant USB device connection/disconnection sounds (the "ding-dong" notification) every 60-90 seconds. The desktop icons sometimes refresh/update when this happens.

This does NOT happen when the AC adapter is plugged in.

What I've tried

I've investigated extensively and found that:

1. Running sudo udevadm monitor shows constant drm/card1 change events:

KERNEL [1192.228486] change   /devices/pci0000:00/0000:00:08.1/0000:03:00.0/drm/card1 (drm)
UDEV  [1192.261376] change/devices/pci0000:00/0000:00:08.1/0000:03:00.0/drm/card1 (drm)
KERNEL [1231.346665] change/devices/pci0000:00/0000:00:08.1/0000:03:00.0/drm/card1 (drm)
UDEV  [1231.370399] change/devices/pci0000:00/0000:00:08.1/0000:03:00.0/drm/card1 (drm)

2. Setting amdgpu.runpm=0 in GRUB does not resolve the issue
3. Disabling WiFi does not resolve the issue
4. power_dpm_force_performance_level remains unchanged during events
5. No error messages appear in dmesg

Workaround

Disabling system event sounds stops the audible notification:

gsettings set org.gnome.desktop.sound event-sounds false

However, the underlying issue (constant drm change events) persists.

Questions

1. Is this a known bug with the AMD Radeon 780M on battery power?
2. Has anyone else with recent AMD Ryzen AI laptops experienced this?
3. Is there a proper fix beyond disabling notification sounds?

I've already reported this as a bug to the AMD DRM developers, but I'm curious if others in the Ubuntu community have encountered this issue.

System info:

• Laptop: ASUS Vivobook 18 M1807HA
• GPU: AMD Radeon 780M (integrated)
• CPU: AMD Ryzen 7 260
• Kernel: 6.17.0-20-generic
• Distribution: Ubuntu 24.04

On starting the Ubuntu 24.04 installation an almost unreadable message appears on the screen saying:

Firmware file b43/ucode30_mimi.fw not found. 
You must go to https://wireless.docs.kernel.org/en/latest/en/users/drivers/b43/developers.html#list-of-firmware 
  and download the correct firmware for this driver version. 
Please carefully read all instructions on this website.

There is a table on the mentioned page. In the column version of wl. wl I guess wireless are 12 numbers with links listed. They are links to download the driver I guess, however I don't have any information about the meaning of those numbers! On the following page, some Acer notebooks are mentioned, less Acer Aspire 5750!

In short I don't have a driver for the Broadcom wireless chip! At the "repair café" where the customer brought the laptop, I could install Ubuntu 24.04.02 without wireless, hence without internet of course! I took the laptop home and tried an completely new installation being connected to the internet by a LAN cable. This was worse! The installation failed completely telling me in the error message: "We are not sure what kind of error happened, try to install again!" Which of course doesn't work and the partially installed system is not bootable at all. Two kinds of sending the error report are provided. One "Send problem" which doesn't work, and a second one by: sudo ubuntu-bug ubuntu-desktop-boostrap, which doesn't work either.

Can someone tell me where to get this damned Broadcom driver, the correct one for the chip in this Aspire 5750 Notebook and I need to know whether I could place the driver on the USB stick which I used to do the Ubuntu installation?

I'm running Ubuntu 22.04 LTS server (plus Plesk Obsidian 18.0.77 Update #1)

Despite Plesk updates being up to date, and Ubuntu updates being up to date (sudo apt update && sudo apt upgrade), my server is running an end-of-life unsupported version of PHP for CLI applications, and I don't see any way to fix that.

I know one option is to upgrade my whole server to 24.04 LTS, but I hoped the LTS appelation for 22.04 would mean that I don't need to do that.

Because of the application that I use I want to update the PHP 8.1.2 cli that is symlinked to /usr/bin/php, instead of specifying 8.4 in the path (e.g. /usr/bin/php84). That is because I would have to edit the shebang line not only in the wrapper script which calls subscripts, but also each of the subscripts, and these changes would need to be redone each time I update the application...

Is this possible?

# php -v
PHP 8.1.2-1ubuntu2.23 (cli) (built: Jan  7 2026 08:37:41) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.1.2, Copyright (c) Zend Technologies
    with Zend OPcache v8.1.2-1ubuntu2.23, Copyright (c), by Zend Technologies

The HP x2 Elite gen 8 laptop was designed for Windows, and Bang & Olufsen worked on improving the sound for it. Ubuntu 25.10 is installed. Apparently they made some changes to the design (maybe the chip; by the way, some Realtek worked with Windows 11). Currently the sound device only works in mono mode.

Audio by Bang & Olufsen. 2 Premium stereo speakers (74dB). Realtek ALC3292 Audio codec and 2 NXP TFA9894 discrete amplifiers. 3 Integrated microphones including one world-facing. I'd like to fix this if possible.

After updating the Firefox snap to 149, it seems to hang on startup. It'll just open a blank window and then stop. The only way I've managed to fix it is starting it in safe mode and disabling hardware acceleration. After that, it'll start fine, albeit with degraded performance.

Since it's probably relevant, my GPU is a Nvidia 1080Ti with driver 580.126.09.

Guessing how to get it simply and quickly, I did write down a little BASH batch program. To use it, simply copy the code below and paste it in your text editor, save it in a file named at your taste in you ~/bin folder, and don't forget to make it executable.

It firstly collects info from several commands (uname, lsblk, etc...) output, then it organizes them to be shown in the terminal window.

It offers also to get those information in a text file, for further use, if launched from terminal window be aware that it does not behave the same as launched from ALT+F2 desktop dialog.

Note that for XDG_CURRENT_DESKTOP env variable and xfce4-about, you probably need to substitute it with a command of your own desktop environment.

I hope this will be helpful for eveyone.

I'm on 19.10 (Eoan Ermine). Recently I let apt upgrade my kernel from 5.3.0-18-generic to 5.3.0-26-generic.

5.3.0-18-generic continues to work fine in both recovery and regular boot modes, however 5.3.0-18-generic fails to recover properly from suspend; the system is unresponsive even though the display manager is visible, the keyboard is unresponsive.

If I attempt to boot, however into 5.3.0-26 from any state I get this message (only visible using recovery mode) which ends in kernel panic.

[    0.757573] rtc_cmos 00:04: setting system clock to 2020-01-13T05:40:14 UTC (1578894014)
[    0.759317] Freeing unused decrypted memory: 2040K
[    0.760604] Freeing unused kernel image memory: 2668K
[    0.761629] Write protecting the kernel read-only data: 22528k
[    0.763006] Freeing unused kernel image memory: 2008K
[    0.764218] Freeing unused kernel image memory: 1416K
[    0.765484] mce: CPU1: Core temperature above threshold, cpu clock throttled (total events = 1)
[    0.765485] mce: CPU3: Core temperature above threshold, cpu clock throttled (total events = 1)
[    0.765486] mce: CPU3: Package temperature above threshold, cpu clock throttled (total events = 1)
[    0.765515] mce: CPU0: Package temperature above threshold, cpu clock throttled (total events = 1)
[    0.765516] mce: CPU2: Package temperature above threshold, cpu clock throttled (total events = 1)
[    0.766883] mce: CPU1: Package temperature above threshold, cpu clock throttled (total events = 1)
[    0.779531] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[    0.780743] x86/mm: Checking user space page tables
[    0.788735] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[    0.789909] Run /init as init process
[    0.792536] mce: CPU0: Package temperature/speed normal
[    0.792536] mce: CPU2: Package temperature/speed normal
[    0.792566] mce: CPU3: Core temperature/speed normal
[    0.792567] mce: CPU1: Core temperature/speed normal
[    0.792567] mce: CPU1: Package temperature/speed normal
Loading, please wait...
/init: conf/conf.d/zz-resume-auto: line 1: syntax error: unexpected "("
[    0.801729] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000200
[    0.802823] CPU: 1 PID: 1 Comm: sh Not tainted 5.3.0-26-generic #28-Ubuntu
[    0.803979] Hardware name: LENOVO 20HRCTO1WW/20HRCTO1WW, BIOS N1MET59W (1.44 ) 11/25/2019
[    0.805136] Call Trace:
[    0.806247]  dump_stack+0x6d/0x9a
[    0.807364]  panic+0x101/0x2d7
[    0.808510]  do_exit.cold+0x1a/0xd5
[    0.809601]  do_group_exit+0x47/0xb0
[    0.810695]  __x64_sys_exit_group+0x18/0x20
[    0.811805]  do_syscall_64+0x5a/0x130
[    0.812897]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[    0.813993] RIP: 0033:0x7fe79afd8fe6
[    0.815090] Code: Bad RIP value.
[    0.816197] RSP: 002b:00007ffded39b718 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
[    0.817380] RAX: ffffffffffffffda RBX: 00005560cf064704 RCX: 00007fe79afd8fe6
[    0.818588] RDX: 0000000000000002 RSI: 000000000000003c RDI: 0000000000000002
[    0.819816] RBP: 0000000000000001 R08: 00000000000000e7 R09: ffffffffffffff80
[    0.821054] R10: 00005560cede71ef R11: 0000000000000202 R12: 0000000000000003
[    0.822314] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[    0.823620] Kernel Offset: 0x3a00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[    0.825001] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000200 ]---
_

5.3.0-18 continues to boot fine using either regular or recovery boot modes.

I do see the line about the syntax error from the suspend file, but I'm inclined to assume that's unrelated to the more serious kernel panic.

Results of lshw:

    description: Notebook
    product: 20HRCTO1WW (LENOVO_MT_20HR_BU_Think_FM_ThinkPad X1 Carbon 5th)
    vendor: LENOVO
    version: ThinkPad X1 Carbon 5th
    serial: PF0ZXXWS
    width: 64 bits
    capabilities: smbios-3.0.0 dmi-3.0.0 smp vsyscall32
    configuration: administrator_password=disabled chassis=notebook family=ThinkPad X1 Carbon 5th power-on_password=disabled sku=LENOVO_MT_20HR_BU_Think_FM_ThinkPad X1 Carbon 5th uuid=4CECD9FC-4E2A-B211-A85C-BED5C2304DEA
  *-core
       description: Motherboard
       product: 20HRCTO1WW
       vendor: LENOVO
       physical id: 0
       version: Not Defined
       serial: L3HF7B600XZ
       slot: Not Available
     *-memory
          description: System Memory
          physical id: 3
          slot: System board or motherboard
          size: 16GiB
        *-bank:0
             description: Row of chips LPDDR3 Synchronous Unbuffered (Unregistered) 1867 MHz (0.5 ns)
             product: K4EBE304EB-EGCF
             vendor: Samsung
             physical id: 0
             serial: 00000000
             slot: ChannelA-DIMM0
             size: 8GiB
             width: 64 bits
             clock: 1867MHz (0.5ns)
        *-bank:1
             description: Row of chips LPDDR3 Synchronous Unbuffered (Unregistered) 1867 MHz (0.5 ns)
             product: K4EBE304EB-EGCF
             vendor: Samsung
             physical id: 1
             serial: 00000000
             slot: ChannelB-DIMM0
             size: 8GiB
             width: 64 bits
             clock: 1867MHz (0.5ns)
     *-cache:0
          description: L1 cache
          physical id: 7
          slot: L1 Cache
          size: 128KiB
          capacity: 128KiB
          capabilities: synchronous internal write-back unified
          configuration: level=1
     *-cache:1
          description: L2 cache
          physical id: 8
          slot: L2 Cache
          size: 512KiB
          capacity: 512KiB
          capabilities: synchronous internal write-back unified
          configuration: level=2
     *-cache:2
          description: L3 cache
          physical id: 9
          slot: L3 Cache
          size: 4MiB
          capacity: 4MiB
          capabilities: synchronous internal write-back unified
          configuration: level=3
     *-cpu
          description: CPU
          product: Intel(R) Core(TM) i7-7600U CPU @ 2.80GHz
          vendor: Intel Corp.
          physical id: a
          bus info: cpu@0
          version: Intel(R) Core(TM) i7-7600U CPU @ 2.80GHz
          serial: None
          slot: U3E1
          size: 2502MHz
          capacity: 3900MHz
          width: 64 bits
          clock: 100MHz
          capabilities: lm fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp x86-64 constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d cpufreq
          configuration: cores=2 enabledcores=2 threads=4
     *-firmware
          description: BIOS
          vendor: LENOVO
          physical id: b
          version: N1MET59W (1.44 )
          date: 11/25/2019
          size: 128KiB
          capacity: 16MiB
          capabilities: pci pnp upgrade shadowing cdboot bootselect edd int13floppy720 int5printscreen int9keyboard int14serial int17printer int10video acpi usb biosbootspecification uefi
     *-pci
          description: Host bridge
          product: Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers
          vendor: Intel Corporation
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 02
          width: 32 bits
          clock: 33MHz
          configuration: driver=skl_uncore
          resources: irq:0
        *-display
             description: VGA compatible controller
             product: HD Graphics 620
             vendor: Intel Corporation
             physical id: 2
             bus info: pci@0000:00:02.0
             version: 02
             width: 64 bits
             clock: 33MHz
             capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
             configuration: driver=i915 latency=0
             resources: irq:138 memory:eb000000-ebffffff memory:60000000-6fffffff ioport:e000(size=64) memory:c0000-dffff
        *-generic:0 UNCLAIMED
             description: System peripheral
             product: Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th Gen Core Processor Gaussian Mixture Model
             vendor: Intel Corporation
             physical id: 8
             bus info: pci@0000:00:08.0
             version: 00
             width: 64 bits
             clock: 33MHz
             capabilities: msi pm cap_list
             configuration: latency=0
             resources: memory:ec348000-ec348fff
        *-usb
             description: USB controller
             product: Sunrise Point-LP USB 3.0 xHCI Controller
             vendor: Intel Corporation
             physical id: 14
             bus info: pci@0000:00:14.0
             version: 21
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi xhci bus_master cap_list
             configuration: driver=xhci_hcd latency=0
             resources: irq:126 memory:ec320000-ec32ffff
           *-usbhost:0
                product: xHCI Host Controller
                vendor: Linux 5.3.0-18-generic xhci-hcd
                physical id: 0
                bus info: usb@1
                logical name: usb1
                version: 5.03
                capabilities: usb-2.00
                configuration: driver=hub slots=12 speed=480Mbit/s
              *-usb:0
                   description: Keyboard
                   product: MK730
                   vendor: Cooler Master Technology Inc.
                   physical id: 2
                   bus info: usb@1:2
                   version: 0.10
                   capabilities: usb-2.00
                   configuration: driver=usbhid maxpower=100mA speed=12Mbit/s
              *-usb:1
                   description: Bluetooth wireless interface
                   vendor: Intel Corp.
                   physical id: 7
                   bus info: usb@1:7
                   version: 0.10
                   capabilities: bluetooth usb-2.00
                   configuration: driver=btusb maxpower=100mA speed=12Mbit/s
              *-usb:2
                   description: Video
                   product: Integrated Camera
                   vendor: Chicony Electronics Co.,Ltd.
                   physical id: 8
                   bus info: usb@1:8
                   version: 0.06
                   capabilities: usb-2.00
                   configuration: driver=uvcvideo maxpower=500mA speed=480Mbit/s
              *-usb:3 UNCLAIMED
                   description: Generic USB device
                   vendor: Validity Sensors, Inc.
                   physical id: 9
                   bus info: usb@1:9
                   version: 1.64
                   serial: 1fb9808954ea
                   capabilities: usb-2.00
                   configuration: maxpower=100mA speed=12Mbit/s
           *-usbhost:1
                product: xHCI Host Controller
                vendor: Linux 5.3.0-18-generic xhci-hcd
                physical id: 1
                bus info: usb@2
                logical name: usb2
                version: 5.03
                capabilities: usb-3.00
                configuration: driver=hub slots=6 speed=5000Mbit/s
        *-generic:1
             description: Signal processing controller
             product: Sunrise Point-LP Thermal subsystem
             vendor: Intel Corporation
             physical id: 14.2
             bus info: pci@0000:00:14.2
             version: 21
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi cap_list
             configuration: driver=intel_pch_thermal latency=0
             resources: irq:18 memory:ec349000-ec349fff
        *-communication
             description: Communication controller
             product: Sunrise Point-LP CSME HECI #1
             vendor: Intel Corporation
             physical id: 16
             bus info: pci@0000:00:16.0
             version: 21
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list
             configuration: driver=mei_me latency=0
             resources: irq:134 memory:ec34a000-ec34afff
        *-pci:0
             description: PCI bridge
             product: Sunrise Point-LP PCI Express Root Port #1
             vendor: Intel Corporation
             physical id: 1c
             bus info: pci@0000:00:1c.0
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:122 memory:ec200000-ec2fffff
           *-generic
                description: Unassigned class
                product: RTS525A PCI Express Card Reader
                vendor: Realtek Semiconductor Co., Ltd.
                physical id: 0
                bus info: pci@0000:02:00.0
                version: 01
                width: 32 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list
                configuration: driver=rtsx_pci latency=0
                resources: irq:127 memory:ec200000-ec200fff
        *-pci:1
             description: PCI bridge
             product: Sunrise Point-LP PCI Express Root Port #3
             vendor: Intel Corporation
             physical id: 1c.2
             bus info: pci@0000:00:1c.2
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:123 memory:ec100000-ec1fffff
           *-network DISABLED
                description: Wireless interface
                product: Wireless 8265 / 8275
                vendor: Intel Corporation
                physical id: 0
                bus info: pci@0000:04:00.0
                logical name: wlp4s0
                version: 88
                serial: b0:35:9f:c3:5e:0b
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
                configuration: broadcast=yes driver=iwlwifi driverversion=5.3.0-18-generic firmware=36.77d01142.0 latency=0 link=no multicast=yes wireless=IEEE 802.11
                resources: irq:135 memory:ec100000-ec101fff
        *-pci:2
             description: PCI bridge
             product: Sunrise Point-LP PCI Express Root Port #5
             vendor: Intel Corporation
             physical id: 1c.4
             bus info: pci@0000:00:1c.4
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:124 memory:ec000000-ec0fffff
           *-storage
                description: Non-Volatile memory controller
                product: NVMe SSD Controller SM961/PM961
                vendor: Samsung Electronics Co Ltd
                physical id: 0
                bus info: pci@0000:05:00.0
                version: 00
                width: 64 bits
                clock: 33MHz
                capabilities: storage pm msi pciexpress msix nvm_express bus_master cap_list
                configuration: driver=nvme latency=0
                resources: irq:16 memory:ec000000-ec003fff
        *-pci:3
             description: PCI bridge
             product: Sunrise Point-LP PCI Express Root Port #9
             vendor: Intel Corporation
             physical id: 1d
             bus info: pci@0000:00:1d.0
             version: f1
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:125 ioport:2000(size=4096) memory:bc000000-ea0fffff ioport:70000000(size=1241513984)
        *-isa
             description: ISA bridge
             product: Sunrise Point LPC Controller/eSPI Controller
             vendor: Intel Corporation
             physical id: 1f
             bus info: pci@0000:00:1f.0
             version: 21
             width: 32 bits
             clock: 33MHz
             capabilities: isa bus_master
             configuration: latency=0
        *-memory UNCLAIMED
             description: Memory controller
             product: Sunrise Point-LP PMC
             vendor: Intel Corporation
             physical id: 1f.2
             bus info: pci@0000:00:1f.2
             version: 21
             width: 32 bits
             clock: 33MHz (30.3ns)
             configuration: latency=0
             resources: memory:ec344000-ec347fff
        *-multimedia
             description: Audio device
             product: Sunrise Point-LP HD Audio
             vendor: Intel Corporation
             physical id: 1f.3
             bus info: pci@0000:00:1f.3
             version: 21
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list
             configuration: driver=snd_hda_intel latency=64
             resources: irq:143 memory:ec340000-ec343fff memory:ec330000-ec33ffff
        *-serial
             description: SMBus
             product: Sunrise Point-LP SMBus
             vendor: Intel Corporation
             physical id: 1f.4
             bus info: pci@0000:00:1f.4
             version: 21
             width: 64 bits
             clock: 33MHz
             configuration: driver=i801_smbus latency=0
             resources: irq:16 memory:ec34b000-ec34b0ff ioport:efa0(size=32)
        *-network
             description: Ethernet interface
             product: Ethernet Connection (4) I219-LM
             vendor: Intel Corporation
             physical id: 1f.6
             bus info: pci@0000:00:1f.6
             logical name: enp0s31f6
             version: 21
             serial: 54:e1:ad:c6:8b:61
             size: 100Mbit/s
             capacity: 1Gbit/s
             width: 32 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
             configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k duplex=full firmware=0.1-4 ip=192.168.100.13 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
             resources: irq:128 memory:ec300000-ec31ffff
     *-pnp00:00
          product: PnP device PNP0c02
          physical id: 0
          capabilities: pnp
          configuration: driver=system
     *-pnp00:01
          product: PnP device PNP0c02
          physical id: 1
          capabilities: pnp
          configuration: driver=system
     *-pnp00:02
          product: PnP device PNP0c02
          physical id: 2
          capabilities: pnp
          configuration: driver=system
     *-pnp00:03
          product: PnP device PNP0c02
          physical id: 4
          capabilities: pnp
          configuration: driver=system
     *-pnp00:04
          product: PnP device PNP0b00
          physical id: 5
          capabilities: pnp
          configuration: driver=rtc_cmos
     *-pnp00:05
          product: PnP device INT3f0d
          physical id: 6
          capabilities: pnp
          configuration: driver=system
     *-pnp00:06
          product: PnP device LEN0071
          physical id: c
          capabilities: pnp
          configuration: driver=i8042 kbd
     *-pnp00:07
          product: PnP device LEN0072
          physical id: d
          capabilities: pnp
          configuration: driver=i8042 aux
     *-pnp00:08
          product: PnP device PNP0c02
          physical id: e
          capabilities: pnp
          configuration: driver=system
     *-pnp00:09
          product: PnP device PNP0c02
          physical id: f
          capabilities: pnp
          configuration: driver=system
     *-pnp00:0a
          product: PnP device PNP0c02
          physical id: 10
          capabilities: pnp
          configuration: driver=system
     *-pnp00:0b
          product: PnP device PNP0c01
          physical id: 11
          capabilities: pnp
          configuration: driver=system
  *-battery
       product: 01AV430
       vendor: SMP
       physical id: 1
       slot: Front
       capacity: 57020mWh
       configuration: voltage=11.5V

I downloaded Ubuntu 18.04.3 LTS and put it on a USB flash drive. Rebooted the MacBook into recovery mode (Command+R) and enabled booting of external media and unsigned operating systems. Rebooted again holding Option and selected to boot from my USB drive ("EFI Boot" in the boot menu).

The Ubuntu boot menu (GNU GRUB version 2.02) shows up, but no matter what I choose in the menu, it just goes into a kernel panic with a lot of ACPI related errors, including this one:

ERROR: Unable to locate IOAPIC for GSI 34

R_LIMIT (20181213/psparse-531)
[    0.164472] ACPI Error: AE_ALREADY_EXISTS, SSDT 0xFFFF954D1AD0A800 Table is a
lready loaded (20181213/tbdata-528)
[    0.164472] ACPI Error: Method parse/execution failed _PR.CPU0.GCAP, AE_ALRE
ADY_EXISTS (20181213/psparse-531)
[    0.164472] ACPI Error: Method parse/execution failed _PR.CPU0._PDC, AE_ALRE
ADY_EXISTS (20181213/psparse-531)
[    0.164472] ACPI Error: AE_ALREADY_EXISTS, SSDT 0xFFFF954D1B7F0000 Table is a
lready loaded (20181213/tbdata-528)
[    0.164472] ACPI Error: Method parse/execution failed _PR.CPU1.APPT, AE_ALRE
ADY_EXISTS (20181213/psparse-531)
[    0.164472] ACPI Error: Method parse/execution failed _PR.CPU1.GCAP, AE_ALRE
ADY_EXISTS (20181213/psparse-531)
[    0.164472] ACPI Error: Method parse/execution failed _PR.CPU1._PDC, AE_ALRE
ADY_EXISTS (20181213/psparse-531)
[    0.165972] ACPI Error: AE_ALREADY_EXISTS, SSDT 0xFFFF954D1AD04C00 Table is a
lready loaded (20181213/tbdata-528)
[    0.165977] ACPI Error: Method parse/execution failed _PR.CPU1.APCT, AE_ALRE
ADY_EXISTS (20181213/psparse-531)
[    0.165982] ACPI Error: Method parse/execution failed _PR.CPU2.GCAP, AE_ALRE
ADY_EXISTS (20181213/psparse-531)
[    0.165982] ACPI Error: Method parse/execution failed _PR.CPU2._PDC, AE_ALRE
ADY_EXISTS (20181213/psparse-531)
[    0.202042] ERROR: Unable to locate IOAPIC for GSI 34
[    8.331212] Couldn't get size: 0x8000000000000015
[    8.331227] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: get_cert_list+0xe6/0xf3
[    8.331247] CPU: 4 PID: 1 Comm: swapper/0 Tainted: G        W        5.0.0-23-generic #24~18.04.1-Ubuntu
[    8.331265] Hardware name: Apple Inc. MacBookPro15,4/Mac-53FDB3D8DBBCA971, BIOS 1037.40.124.0.0 (iBridge: 17.16.11081.0.0.0) 10/17/2019
[    8.331288] Call Trace:
[    8.331296]  dump_stack+0x63/0x85
[    8.331315]  panic+0xfe/0x2a4
[    8.331322]  ? get_cert_list+0xe6/0xf3
[    8.331331]  __stack_chk_fail+0x19/0x20
[    8.331339]  get_cert_list+0xe6/0xf3
[    8.331389] Kernel Offset: 0x28000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[    8.331411] ---[ end Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: get_cert_list+0xe6/0xf3 ]---
_

System information:

• MacBook Pro (13-inch, 2019, Two Thunderbolt 3 ports)
• Processor: 1.4 GHz Quad-Core Intel Core i5
• Memory: 16 GB 2133 MHz LPDDR3
• Graphics: Intel Iris Plus Graphics 645 1536 MB
• macOS Catalina (version 10.15.1)

I installed Ubuntu 18.10 on my HP EliteBook x360 1030 G3 and can't get all fn-combinations to work.

What works: Volume up/down, Mute, Airplane mode What not works: Brightness up/down, Microphone mute

The often stated kernel parameters as listed here aren't resolving this issue.

Trying the command showkey -k revealed some strange behaviour: For all combinations not working a press and release with the same keycode (465) is generated. The other combinations result in different codes.

When running xev or acpi_listen no event is listed for the malfunctioning combinations.

Would be great if there is a way to get any reaction for this key combinations.

It seems that I can't install Ubuntu on my old Toshiba Satellite C650. Not only I can't install Ubuntu, I can't install any Linux-based OS. I already tried Ubuntu 18.04, Ubuntu 18.10 and the latest version of Linux Mint, and it's always the same error. I'm not trying to dual boot. I'm just trying to do a clean Ubuntu installation. Another thing worth mentioning is that whatever option I'm trying, it doesn't work.

The error message I receive no matter what Linux-based OS I'm trying to install:

[    0.136019]  tty_register_device_attr+0x123/0x200
[    0.136019]  ? register_chrdev_region+0x62/0xd0
[    0.136019]  ? set_debug_rodata+0x17/0x17
[    0.136019]  tty_register_driver+0x14b/0x1f0
[    0.136019]  ? serdev_init+0x22/0x22
[    0.136019]  vty_init+0x13d/0x15b
[    0.136019]  tty_init+0x114/0x118
[    0.136019]  chr_dev_init+0xaa/0xad
[    0.136019]  do_one_initcall+0x52/0x19f
[    0.136019]  kernel_init_freeable+0x1af/0x251
[    0.136019]  ? rest_init+0xb0/0xb0
[    0.136019]  kernel_init+0xe/0x110
[    0.136019]  ret_from_fork+0x35/0x40
[    0.136019] Code: 4d 01 e0 4d 8b 18 4d 33 99 40 01 00 00 4c 89 c3 4c 31 db e
48 0f c7 0f 0f 94 c0 84 c0 74 ac 4d 39 d8 74 14 49 63 41 20 48 01 c3 <48> 33 1
49 33 99 40 01 00 00 0f 18 0b 41 f7 c5 00 80 00 00 0f
[    0.136019] RIP: __kmalloc_track_caller+0xc5/0x210 RSP: ffffb63e0064ba98
[    0.137611] ---[ end trace e3702646688e0a27 ]---
[    0.137674] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0
00000b
[    0.137674]
[    0.137754] ---[ end Kernel panic - not syncing: Attempted to kill init! 
exitcode=0x0000000b
[  0.137754]
_

What is the best practices to leave this kind of file? I dont want to leave it on /Downloads folder

I'm running Kubuntu 18.04 (minimal install). I have my /home directory on a different (bigger) partition. I would like to install Libreoffice in a custom directory in /home. I followed this guide and have all the files in

~/kubuntu_apps/libreoffice6.0

and am able to launch libreoffice from the command line. However, it doesn't show up on the menu search and I'm not able to launch office files from the file manager. This is a bit of a hassle especially for my spouse.

How can fix this?

I was trying to fresh install Ubuntu 16.04 on a Dell 3521. Previously I was using 15.04. The system was getting slow ,so I wanted to install fresh. I deleted the /, /boot, /swap and recreated them. There are still two other drives (ext2).

While installing I did select encrypt /home and continue in UEFI mode. The process was terminated after

Now I am unable to boot. I tried both Install Ubuntu and Try without installing using a USB, but it is showing error kernel panic.

[    1.265150] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block
[    1.265189] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.4.0-21-generic #37-Ubuntu
[    1.265219] Hardware name: Dell Inc. Inspiron 3521/0G9PWP, BIOS A02 09/26/2012
[    1.265249]  0000000000000086 00000000ac3a0022 ffff88014a3f7de8 ffffffff813e93c3
[    1.265288]  ffffffff81c9af38 ffff88014a3f7e80 ffff88014a3f7e70 ffffffff8118b9e7
[    1.265327]  ffffffff00000010 ffff88014a3f7e80 ffff88014a3f7e18 00000000ac3a0022
[    1.265366] Call Trace:
[    1.265382]  [<ffffffff813e93c3>] dump_stack+0x63/0x90
[    1.265406]  [<ffffffff8118b9e7>] panic+0xd3/0x215
[    1.265430]  [<ffffffff81f5a5fa>] mount_block_root+0x285/0x294
[    1.265456]  [<ffffffff81f5a7b2>] mount_root+0x65/0x68
[    1.265479]  [<ffffffff81f5a91f>] prepare_namespace+0x16a/0x1a2
[    1.265505]  [<ffffffff81f5a21b>] kernel_init_freeable+0x1e9/0x212
[    1.265533]  [<ffffffff81817f30>] ? rest_init+0x80/0x80
[    1.265556]  [<ffffffff81817f3e>] kernel_init+0xe/0xe0
[    1.265580]  [<ffffffff8182488f>] ret_from_fork+0x3f/0x70
[    1.265604]  [<ffffffff81817f30>] ? rest_init+0x80/0x80
[    1.265655] Kernel Offset: disabled
[    1.265673] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block

From the Grub menu -> Terminal I can see the partition, but no Ubuntu files. I am helpless. What should I do now?

Ubuntu Live USB wasn't working, but Boot-Repair-Disk worked fine.

                                           GNU GRUB  version 2.02~beta2-36ubuntu3

   Minimal BASH-like line editing is supported. For the first word, lists possible  
   command completions. Anywhere else TAB lists possible device or file completions.  
   ESC at any time exits.

grub> ls
(memdisk) (hd0) (hd0,msdos1) (hd1) (hd1,msdos9) (hd1,msdos8) (hd1,msdos7) (hd1,msdos6) (hd1,msdos5) (cd0)
grub> ls (hd0,msdos1)
        Partition hd0,msdos1: Filesystem type fat, UUID F547-89D7 - Partition start at 1024KiB - Total size 7715840KiB
grub> boot
error: you need to load the kernel first.
grub> ls (hd1)
error: file /boot/grub/x86_64-efi/tar.mod' not found. error: file /boot/grub/x86_64-efi/sfs.mod' not found.
error: file /boot/grub/x86_64-efi/nilfs2.mod' not found. error: file /boot/grub/x86_64-efi/minix.mod' not found.
error: file /boot/grub/x86_64-efi/afs.mod' not found. error: file /boot/grub/x86_64-efi/affs.mod' not found.
Device hd1: No known filesystem detected - Sector size 512B - Total size 488386584KiB
grub> ls (hd1,msdos9)
        Partition hd1,msdos9: Filesystem type ext* - Last modification time 2016-04-22 23:47:34 Friday, UUID
b9b90618-9f0b-4b76-b368-e35dda38ea81 - Partition start at 8790016KiB - Total size 97166336KiB
grub> fdisk

I have a file.img file that I want to convert to file.iso.

The tool ccd2iso does not seem to work for this task:

Unrecognized sector mode (0) at sector 0!

I ensured that the img file is not corrupted.

I am trying to install Ubuntu 14.04 on my work computer. First I had to active VT in the BIOS and now I get this kernel panic error and I can't fix it:

[    0.013073] ESI: c19ace90 EDI: c19acebc EBP: c1915f7c ESP: c1915f7c
[    0.013132]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[    0.013175] CR0: 8005003b CR2: ffe14000 CR3: 01a99000 CR4: 000006b0
[    0.013268] Stack:
[    0.013295]  c1915fb0 c101dfe4 dfff62c8 00040000 00000000 c10e975a 000306c3 0
0010800
[    0.013457]  82d82203 0febfbff c1a183a0 00020800 c1a9b800 c1915fb8 c19bf981 c
1915fc8
[    0.013619]  c19bf9c1 00040000 00000000 c1915fec c19b4ac5 000000f3 ffffffff f
fffffff
[    0.013778] Call Trace:
[    0.013811]  [<c101dfe4>] identify_cpu+0x3e4/0x4d0
[    0.013853]  [<c10e975a>] ? __delayacct_tsk_init+0x1a/0x30
[    0.013901]  [<c19bf981>] identify_boot_cpu+0xd/0x28
[    0.013940]  [<c19bf9c1>] check_bugs+0xb/0xa5
[    0.014060]  [<c19b4ac5>] start_kernel+0x387/0x3b9
[    0.014151]  [<c19b4575>] ? repair_env_string+0x51/0x51
[    0.014247]  [<c19b439c>] i386_start_kernel+0x137/0x13a
[    0.014320] Code: 90 8d b4 26 00 00 00 00 55 89 e5 0f 20 e0 5d c3 90 8d b4 26
00 00 00 00 55 31 c0 89 e5 0f 20 e0 5d c3 8d b6 00 00 00 00 55 89 e5 <0f> 22 e0
5d c3 90 8d b4 26 00 00 00 00 55 89 e5 0f 09 5d c3 89
[    0.015404] EIP: [<c1045d43>] native_write_cr4+0x3/0x10 SS:ESP 0068:c1915f7c
[    0.015521] ---[ end trace 9533211f5611d467 ]---
[    0.015593] Kernel panic - not syncing: Attempted to kill the idle task!
_

The computer uses a Core i3-4130 CPU with 8GB of brand new RAM.

I already tried setting the processor to Intel VT-x or AMD-v in the Virtualization engine options, but I got the same error.

I want good scientific calculator which can calculate the roots of any quadratic equation just by entering the quadratic equation

first of all is any app like those there in ubuntu software centre??

I have a quick question maybe someone could help me with.

I downloaded a few apps and ISO's from source forge today and they seemed to have disappeared. They weren't in the default down load folder or in the Firefox download cache.

So anyway, I started clicking around in my files trying to locate them and I came across a file string that I hadn't seen before. /var/spool/postfix/etc/ssl/certs. And in it, I found all these ssl CA and Root CA certificates (maybe 200 to 300 of them). I can open them and see pub. key.

Algorithm, Signature (huge table of numbers) and a bunch of other info that seems sensitive. I know very little about encryption and secure sockets, so I was wondering if this is a normal place to find such items.

By the way I don’t use local mail service on the machine. So I don't Know why anything would be in there. Thank You. B

I am forced to install Ubuntu in order to install https://github.com/znort987/blockparser

However, when running make I am encountering this:

lnk -- parser
/usr/bin/ld: cannot find -lcrypto
/usr/bin/ld: skipping incompatible /usr/lib/gcc/i686-linux-gnu/4.6/libstdc++.so when searching for -lstdc++
/usr/bin/ld: skipping incompatible /usr/lib/gcc/i686-linux-gnu/4.6/libstdc++.a when 
searching for -lstdc++
/usr/bin/ld: cannot find -lstdc++
collect2: ld returned 1 exit status
make: *** [parser] Error 1

I did one or two laps around the internet and the typical suggestion is to apt-get install libssl-dev, but I have already done this:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
libssl-dev is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.

I am running 12.04.3 (precise).

When I try to compile it with g++, as suggested (for example) by https://stackoverflow.com/questions/5329638/usr-bin-ld-cannot-find I get other errors:

parser.cpp:2:18: fatal error: util.h: No such file or directory

(util.h is there in the folder)

So I'm hoping that the make error is easier to solve than the compile errors.

Thank you guys for your help so far (was having issues with the GRUB loader last night; you guys did help with that), but I could use some more help. I am still new to Ubuntu I guess.