robertspierre's questions

I have installed Ubuntu 20.10 with the "encrypted" option on.

Now I believe that in my disk there is an outer "container" with LUKS2 and an ext4 partition with the OS inside it.

Can I have Fedora 34 in double boot in this setting?

I would like to resize the "inside" ext4 partition to make another BTRFS partition along side it in which Fedora would reside, so also Fedora should be encrypted inside the LUKS2 container.

GRUB will ask me which OS I want to boot at startup.

Installing Fedora on ext4 would be fine as well.

But I am not sure if that is possible at all or would work at all.

EDIT:

I would like to resize nvme0n1p3_crypt to make room for the other OS

Output of lsblk

NAME                   MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
loop0                    7:0    0  99.2M  1 loop  /snap/core/10908
loop1                    7:1    0  99.1M  1 loop  /snap/core/10958
loop2                    7:2    0  32.3M  1 loop  /snap/snapd/11402
loop3                    7:3    0  32.3M  1 loop  /snap/snapd/11588
sda                      8:0    0 931.5G  0 disk  
└─intdata              253:3    0 931.5G  0 crypt /media/raffaele/intdata
nvme0n1                259:0    0 476.9G  0 disk  
├─nvme0n1p1            259:1    0   512M  0 part  /boot/efi
├─nvme0n1p2            259:2    0   732M  0 part  /boot
└─nvme0n1p3            259:3    0 475.7G  0 part  
  └─nvme0n1p3_crypt    253:0    0 475.7G  0 crypt 
    ├─vgkubuntu-root   253:1    0 474.8G  0 lvm   /
    └─vgkubuntu-swap_1 253:2    0   980M  0 lvm   [SWAP]

Output of findmnt

TARGET                                SOURCE         FSTYPE   OPTIONS
/                                     /dev/mapper/vgkubuntu-root
│                                                    ext4     rw,relatime,errors=remount-r
├─/sys                                sysfs          sysfs    rw,nosuid,nodev,noexec,relat
│ ├─/sys/kernel/security              securityfs     security rw,nosuid,nodev,noexec,relat
│ ├─/sys/fs/cgroup                    tmpfs          tmpfs    ro,nosuid,nodev,noexec,size=
│ │ ├─/sys/fs/cgroup/unified          cgroup2        cgroup2  rw,nosuid,nodev,noexec,relat
│ │ ├─/sys/fs/cgroup/systemd          cgroup         cgroup   rw,nosuid,nodev,noexec,relat
│ │ ├─/sys/fs/cgroup/devices          cgroup         cgroup   rw,nosuid,nodev,noexec,relat
│ │ ├─/sys/fs/cgroup/net_cls,net_prio cgroup         cgroup   rw,nosuid,nodev,noexec,relat
│ │ ├─/sys/fs/cgroup/freezer          cgroup         cgroup   rw,nosuid,nodev,noexec,relat
│ │ ├─/sys/fs/cgroup/cpu,cpuacct      cgroup         cgroup   rw,nosuid,nodev,noexec,relat
│ │ ├─/sys/fs/cgroup/blkio            cgroup         cgroup   rw,nosuid,nodev,noexec,relat
│ │ ├─/sys/fs/cgroup/rdma             cgroup         cgroup   rw,nosuid,nodev,noexec,relat
│ │ ├─/sys/fs/cgroup/memory           cgroup         cgroup   rw,nosuid,nodev,noexec,relat
│ │ ├─/sys/fs/cgroup/pids             cgroup         cgroup   rw,nosuid,nodev,noexec,relat
│ │ ├─/sys/fs/cgroup/hugetlb          cgroup         cgroup   rw,nosuid,nodev,noexec,relat
│ │ ├─/sys/fs/cgroup/perf_event       cgroup         cgroup   rw,nosuid,nodev,noexec,relat
│ │ └─/sys/fs/cgroup/cpuset           cgroup         cgroup   rw,nosuid,nodev,noexec,relat
│ ├─/sys/fs/pstore                    pstore         pstore   rw,nosuid,nodev,noexec,relat
│ ├─/sys/firmware/efi/efivars         efivarfs       efivarfs rw,nosuid,nodev,noexec,relat
│ ├─/sys/fs/bpf                       none           bpf      rw,nosuid,nodev,noexec,relat
│ ├─/sys/kernel/debug                 debugfs        debugfs  rw,nosuid,nodev,noexec,relat
│ ├─/sys/kernel/tracing               tracefs        tracefs  rw,nosuid,nodev,noexec,relat
│ ├─/sys/fs/fuse/connections          fusectl        fusectl  rw,nosuid,nodev,noexec,relat
│ └─/sys/kernel/config                configfs       configfs rw,nosuid,nodev,noexec,relat
├─/proc                               proc           proc     rw,nosuid,nodev,noexec,relat
│ └─/proc/sys/fs/binfmt_misc          systemd-1      autofs   rw,relatime,fd=28,pgrp=1,tim
│   └─/proc/sys/fs/binfmt_misc        binfmt_misc    binfmt_m rw,nosuid,nodev,noexec,relat
├─/dev                                udev           devtmpfs rw,nosuid,noexec,relatime,si
│ ├─/dev/pts                          devpts         devpts   rw,nosuid,noexec,relatime,gi
│ ├─/dev/shm                          tmpfs          tmpfs    rw,nosuid,nodev
│ ├─/dev/mqueue                       mqueue         mqueue   rw,nosuid,nodev,noexec,relat
│ └─/dev/hugepages                    hugetlbfs      hugetlbf rw,relatime,pagesize=2M
├─/run                                tmpfs          tmpfs    rw,nosuid,nodev,noexec,relat
│ ├─/run/lock                         tmpfs          tmpfs    rw,nosuid,nodev,noexec,relat
│ └─/run/user/1000                    tmpfs          tmpfs    rw,nosuid,nodev,relatime,siz
│   ├─/run/user/1000/gvfs             gvfsd-fuse     fuse.gvf rw,nosuid,nodev,relatime,use
│   └─/run/user/1000/doc              portal         fuse.por rw,nosuid,nodev,relatime,use
├─/snap/core/10958                    /dev/loop1     squashfs ro,nodev,relatime
├─/snap/snapd/11402                   /dev/loop2     squashfs ro,nodev,relatime
├─/snap/snapd/11588                   /dev/loop3     squashfs ro,nodev,relatime
├─/snap/core/10908                    /dev/loop0     squashfs ro,nodev,relatime
├─/boot                               /dev/nvme0n1p2 ext4     rw,relatime
│ └─/boot/efi                         /dev/nvme0n1p1 vfat     rw,relatime,fmask=0077,dmask
└─/media/raffaele/intdata             /dev/mapper/intdata
                                                     ext4     rw,relatime

Output of df -h

df: /run/user/1000/doc: Operation not permitted
Filesystem                  Size  Used Avail Use% Mounted on
tmpfs                       1.6G  2.1M  1.6G   1% /run
/dev/mapper/vgkubuntu-root  467G  191G  253G  43% /
tmpfs                       7.8G  964K  7.8G   1% /dev/shm
tmpfs                       5.0M  4.0K  5.0M   1% /run/lock
tmpfs                       4.0M     0  4.0M   0% /sys/fs/cgroup
/dev/nvme0n1p2              705M  358M  296M  55% /boot
/dev/nvme0n1p1              511M  7.9M  504M   2% /boot/efi
/dev/mapper/intdata         916G  350G  520G  41% /media/raffaele/intdata
tmpfs                       1.6G   11M  1.6G   1% /run/user/1000

I had Kubuntu 20.10.

But I have long uninstalled KDE and installed GNOME.

Now the update to 210.4 doesn't show up.

I have selected the option to notify me of updates for every new version (not just LTS) but "Updates" still shows no available updates.

Also do-release-upgrade returns:

Checking for a new Ubuntu release

No new release found.

I use Ubuntu 20.10.

When I play a Steam game full screen, the panel (the top bar) still shows up and goes over the application, as well as the window list from this extension.

How can I hide them in fullscreen applications?

Being behind corporate firewall, I need to make Weylus works via USB Tethering.

The README says it's possible but doe not provide step-by-step instruction.

How can I have it working via USB Tethering? I don't know where to start.

I'm on Ubuntu 20.10, Linux 5.8

I have activated auto login in Settings -> Users -> Automatic Login

Now Super+L does nothing. It should lock the screen.

How can I restore Super+L behaviour?

Ubuntu 20.10, GNOME 3.38, Linux 5.8

Running Ubuntu 20.10.

My software center hangs whenever I search for a software using the magnifying glass.

I have the flatpak extension enabled, it that's relevant.

I use Master PDf editor installed through flathub to edit some PDf files.

When I close it, I can sse by lsof | grep /media/<MYUSER>/<DEVICE> that xdg-document is keeping my file open.

What is xdg-document, why it is keeping the file open and how can I prevent it from doing this?

I have Kubuntu 20.10.

Now I wanted the GNOME desktop.

So I installed the package ubuntu-desktop and removed all the packages kde* and plasma*.

I also changed the plymouth theme.

But now eveytime I boot the PC, after login the following windows appears:

What is the application -c?

How can I get rid of KDE Wallet Service and have GNOME manage my wallet instead?

I have installed Softmaker Office but its .deb installer has entered in every /usr/share/icons/* directory substituting the icons for .docx/.xlsx/.pptx files with its own icons.

If I uninstall it, the icons turn back to the normal ones for the respective theme.

How can I prevent a .deb package to do that when it is installed?

I have the following maestral-maestral.desktop file:

[Desktop Entry]
Version=1.0
Type=Application
Name=Maestral
Exec=/usr/bin/python3 -m maestral_qt -c maestral
Icon=maestral
GenericName=File Synchronizer
Comment=Sync your files with Dropbox
X-GNOME-Autostart-enabled=true

If I open a terminal and call dex maestral-maestral.desktop, the application runs.

However, if I double click on the desktop file on Nautilus, the following window appears:

If I click on "Run" or "Run in terminal", nothing happens.

I have opened a terminal, run nautilus, double click on that desktop file and click on "Run", the following error appears in the terminal:

/home/raffaele/.config/autostart/maestral-maestral.desktop: 1: [Desktop: not found
/home/raffaele/.config/autostart/maestral-maestral.desktop: 5: -m: not found
/home/raffaele/.config/autostart/maestral-maestral.desktop: 7: Synchronizer: not found
/home/raffaele/.config/autostart/maestral-maestral.desktop: 8: your: not found
/home/raffaele/.config/autostart/maestral-maestral.desktop: 9: X-GNOME-Autostart-enabled=true: not found

I have Kubuntu 20.10, but I have installed the GNOME desktop and uninstalled Plasma.

I have installed Maestral and activated the "Start Maestral on login" option on preferences.

But Maestral doesn't start at login.

Here is the content of ~/.config/autostart/maestral-maestral.desktop

[Desktop Entry]
Version = 1.0
Type = Application
Name = Maestral
Exec = /usr/bin/python3 -m maestral_qt -c maestral
Icon = maestral
Terminal = false
Categories = Network;FileTransfer;
GenericName = File Synchronizer
Comment = Sync your files with Dropbox

I am able to start it with /usr/bin/python3 -m maestral_qt -c maestral

EDIT: I have Ubuntu 20.10

The system tray icon of DropBox is completely black and thus indistinguishable from the background.

In order to solve the problem, this post suggests to substitute DropBox's libGL with NVIDIA's libGL to solve the problem.

But my NVIDIA proprietary drivers do not have any libGL, and when I asked I was told that the NVIDIA proprietary drivers are not supposed to have libGL.

How can I turn the color of the DropBox tray icon from black to white?

System information:

Dropbox daemon version: 113.4.507
Dropbox command-line interface version: 2020.03.04
I have Kubuntu 20.10. 
Linux kernel v. 5.8.0-38-generic. 
NVIDIA proprietary driver v: 460.32.03 

I have installed WPS Office ver. 11.1.0.9719 from official website and official .deb x86_64 package.

This version of WPS Office is very slow in opening some files.

For example, I have this .docx file that WPS Office takes 15 seconds to open, while LibreOffice Writer opens it in 1/2 seconds.

The solution here, which implies changing the theme on which WPS Office runs, unfortunately does not work for me.

I don't even think that the command is correct: if I run WPS Office with et -style=XXX, I can put whatever I want in XXX and it never throws any error, and I notice no difference whatsoever, nor in terms of UI nor in terms of file opening times (not even with the proposed -style=motif).

This does not answer my question as it redirects in installing WPS from snap.

Installing 10.1.0.6757 using snap fixes the problem. Why is that?

My system is:

Operating System: Kubuntu 20.10
KDE Plasma Version: 5.19.5
KDE Frameworks Version: 5.74.0
Qt Version: 5.14.2
Kernel Version: 5.8.0-33-generic
OS Type: 64-bit
Processors: 12 × Intel® Core™ i7-8750H CPU @ 2.20GHz
Memory: 15,5 GiB of RAM
Graphics Processor: GeForce GTX 1060/PCIe/SSE2

I have downloaded OpenShot v2.5.1 (the latest version as of today), in the form of x86_64 AppImage.

My system:

Operating System: Kubuntu 20.10
KDE Plasma Version: 5.19.5
KDE Frameworks Version: 5.74.0
Qt Version: 5.14.2
Kernel Version: 5.8.0-33-generic
OS Type: 64-bit
Processors: 12 × Intel® Core™ i7-8750H CPU @ 2.20GHz
Memory: 15,5 GiB of RAM
Graphics Processor: GeForce GTX 1060/PCIe/SSE2

Here is the error message when I try to run it:

Module: _openshot

Traceback (most recent call last):
  File "/home/gitlab-runner/builds/5cd61c66/0/OpenShot/openshot-qt/openshot.py", line 18, in swig_import_helper
  File "/usr/lib/python3.4/imp.py", line 297, in find_module
ImportError: No module named '_openshot'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/tmp/.mount_z2XiKa/usr/bin/classes/app.py", line 72, in __init__
    from classes import settings, project_data, updates, language, ui_util, logger_libopenshot
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2284, in _handle_fromlist
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 321, in _call_with_frames_removed
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2237, in _find_and_load
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2226, in _find_and_load_unlocked
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1200, in _load_unlocked
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1129, in _exec
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1471, in exec_module
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 321, in _call_with_frames_removed
  File "/tmp/.mount_z2XiKa/usr/bin/classes/logger_libopenshot.py", line 31, in <module>
    import openshot
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2237, in _find_and_load
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2226, in _find_and_load_unlocked
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1191, in _load_unlocked
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1161, in _load_backward_compatible
  File "/home/gitlab-runner/builds/5cd61c66/0/OpenShot/openshot-qt/openshot.py", line 28, in <module>
  File "/home/gitlab-runner/builds/5cd61c66/0/OpenShot/openshot-qt/openshot.py", line 20, in swig_import_helper
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2237, in _find_and_load
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2226, in _find_and_load_unlocked
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1191, in _load_unlocked
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1161, in _load_backward_compatible
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 539, in _check_name_wrapper
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1715, in load_module
  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 321, in _call_with_frames_removed
ImportError: /lib/x86_64-linux-gnu/libpango-1.0.so.0: undefined symbol: g_list_model_get_n_items

I managed to export my keys from gpg in an armored text format, and import them in Mozilla Thunderbird, both the public and the private key.

1. Is there a way to avoid this process, and have Mozilla Thunderbird communicate with gpg directly?

2. I noticed that, when I encrypt a message, Mozilla Thunderbird doesn't ask me the password for the private key. So I assume Mozilla Thunderbird stored it somewhere. Where does Thunderbird store my password for the private key, and is it saved in plain text? I don't want it to be stored in plain text

I have reported a LibreOffice Impress bug here. In that bug, the text of a slide went beyond the page margin

Although it looked fine in Microsoft PowerPoint

Now I cannot reproduce the bug anymore. LibreOffice Impress, the same version used to report the bug and also provided by Canonical, seems to display it correctly.

One major change that happened is that I installed wine. Is it possible that wine installed some fonts that were not originally present, and so when I reported the bug LibreOffice was resorting to some other alternative font?

I have a fresh installation of Kubuntu 20.10. In the installer, I chose the option for full-disk encryption. The partition holding my system (the one mounted at /) is now encrypted.

But /boot is still un-encrypted. This exposes me to evil maid attacks.

The most updated how-to guide for full disk encryption in Ubuntu (including /boot) I have found dates back to 2019, would have me to reinstall everything from scratch.

I already have the system partition encrypted, now I only need to encrypt /boot.

Is there a way to encrypt the /boot partition without having to reinstall everything?

I am trying to set up my HP LaserJet P1102 on Ubuntu 19.04.

I know the theoretical procedure to install the printer, but this procedure does not work for me, following the "correct" procedure to install the printer (the software + the plugin) fails as follows.

I have downloaded and installed hplip 3.19.5 from here.

At first the installation seems to succeed. It asks for plugin to be installed, then it says "Plugin installation successful". But after I click OK on this message, it returns to the window in which I should choose which printer to install, and another message pops up:

error: The device you are trying to setup requires a binary plug-in. Some functionalities may not work as expected without plug-ins. Please run 'hp-plugin' as normal user to install plug-ins. Visit http://hplipopensource.com for more infomation.

error: hp-setup failed. Please run hp-setup manually.

I have Ubuntu 17.10. My kernel version is 4.14.21-041421-generic. I have downloaded HPLIP 3.17.11 run file from the website. Unfortunately I am unable to compile it. After running the .run file, it starts ./configure, which throws an error regarding net-snmp.

In particular, these are the last lines of configure:

checking for cups ppd install... no
checking for foomatic-rip-hplip install... no
checking for qt5... no
checking for qt4... yes
checking for qt3... no
checking for policykit... no
checking for host machine platform... x86_64
checking for CRYPTO_free in -lcrypto... no
configure: error: cannot find net-snmp support (or --disable-network-build)

SNMP is installed:

snmp is already the newest version (5.7.3+dfsg-1.7ubuntu1).

and libsnmp-dev is also installed (version 5.7.3).

I installed Ubuntu 17.10 in dual boot. But, in Ubuntu, I could not play sound from the speaker, while headphones worked fine. On Windows, both headphones and speakers worked fine.

So I found this post and applied the suggestion. That is, I opened

sudo gedit /etc/modprobe.d/alsa-base.conf

and I added the following line at the end

options snd-hda-intel model=generic

and then rebooted my PC.

Now the sound is completely broken. I cannot play any sound nor from the speaker nor from the headphones. Now from Ubuntu nor from Windows.

In particular, Windows show the sound icon in the task bar crossed off, and on Device Manager it recognizes an "Intel HD Audio" device, but it has the yellow warning icon next to it and, by opening the properties, it says that the device could not be started due to an error.

I have tried to revert the change and rebooted the PC, but this doesn't work.

What can I do? If I am unable to fix this I had to bring the PC into warranty.

I didn't expect to mess things up SO BAD.