Rubi Shnol's questions

After a recent kernel update, Ubuntu stopped waking up from suspend. It just freezes, the screen is black and no reaction to keys comes.

I'm not using the nouveau driver. My display manager is GDM3.

Doing journalctl -t systemd-sleep -n 20 gives:

Feb 12 20:58:48 xx-G750JW systemd-sleep[9743]: modprobe: FATAL:
Module 8822bu not found.
Feb 12 20:58:48 xx-G750JW systemd-sleep[9746]: modprobe: FATAL: Module 8822bu not found in
directory /lib/modules/5.4.0-99-generic

Yet, say, 8822bu is not found in the system.

Any hints on where to look for bugs and how to fix them?

MS OneNote is nice, but its snap counterpart on Ubuntu is kind of meh. Xournal++ is awesome and has now a mobile version. Except, so far it's just beta and drawing gets jerky after a couple of lines already.

Is there a notes taking app which would be available on Windows, Linux and Android?

My typical scenario: I want to draw stuff on my tablet and then open it one desktop and be able to edit it.

Xournal++ would be ideal if its mobile version wasn't so jerky. I can draw with it on my tablet and then open the xopp file on the desktop and edit it. I don't care about sync, I just want to be able to open a file created on the tablet on my PC and vice versa. Xournal++ does that, the only con is that it's mobile version is too beta.

All of the sudden, Gnome shell extensions stopped working.

Anyone know what could be the issue or where to start looking for it?

I am using Ubuntu 20.04 and GNOME Shell 3.36.4.

Here are some logs:

Sep 30 20:48:14 ___ gnome-shell[19745]: Will monitor session 11
Sep 30 20:48:15 ___ gnome-shell[19745]: Telepathy is not available, chat integration will be disabled.
Sep 30 20:48:15 ___ gnome-shell[19745]: Failed to create file /run/user/1000/gnome-shell-disable-extensions: Error opening file “/run/user/1000/gnome-shell-disable-extensions”: File exists
Sep 30 20:48:15 ___ gnome-shell[19745]: **
Sep 30 20:48:15 ___ gnome-shell[19745]: ERROR:gmenu-tree.c:3776:preprocess_layout_info: assertion failed: (!directory->preprocessed)
Sep 30 20:48:15 ___ gnome-shell[19745]: Bail out! ERROR:gmenu-tree.c:3776:preprocess_layout_info: assertion failed: (!directory->preprocessed)
Sep 30 20:48:15 ___ gnome-shell[19745]: GNOME Shell crashed with signal 6
Sep 30 20:48:15 ___ gnome-shell[19745]: == Stack trace for context 0x557e6bc49920 ==
Sep 30 20:48:15 ___ gnome-shell[19745]: #0   557e6c4714b0 i   /usr/share/gnome-shell/extensions/[email protected]/extension.js:598 (184862b91448 @ 131)
Sep 30 20:48:15 ___ gnome-shell[19745]: #1   557e6c4713e8 i   /usr/share/gnome-shell/extensions/[email protected]/extension.js:407 (184862b8f8f8 @ 807)
Sep 30 20:48:15 ___ gnome-shell[19745]: #2   557e6c471338 i   /usr/share/gnome-shell/extensions/[email protected]/extension.js:681 (184862b7f9e8 @ 21)
Sep 30 20:48:15 ___ gnome-shell[19745]: #3   557e6c471270 i   resource:///org/gnome/shell/ui/extensionSystem.js:167 (65d60646a0 @ 571)
Sep 30 20:48:15 ___ gnome-shell[19745]: #4   7ffc6cce8f40 b   resource:///org/gnome/shell/ui/extensionSystem.js:349 (65d6064bc8 @ 361)
Sep 30 20:48:15 ___ gnome-shell[19745]: #5   7ffc6cce9a30 b   resource:///org/gnome/shell/ui/extensionSystem.js:599 (65d606a718 @ 551)
Sep 30 20:48:15 ___ gnome-shell[19745]: #6   7ffc6ccea470 b   resource:///org/gnome/shell/misc/fileUtils.js:27 (65d60068f8 @ 350)
Sep 30 20:48:15 ___ gnome-shell[19745]: #7   557e6c4711c8 i   resource:///org/gnome/shell/ui/extensionSystem.js:574 (65d606a6a0 @ 494)
Sep 30 20:48:15 ___ gnome-shell[19745]: #8   557e6c471138 i   resource:///org/gnome/shell/ui/extensionSystem.js:608 (65d606a790 @ 67)
Sep 30 20:48:15 ___ gnome-shell[19745]: #9   557e6c4710a8 i   resource:///org/gnome/shell/ui/extensionSystem.js:639 (65d606a970 @ 57)
Sep 30 20:48:15 ___ gnome-shell[19745]: #10   557e6c470fe8 i   resource:///org/gnome/shell/ui/extensionSystem.js:56 (65d6064358 @ 268)
Sep 30 20:48:15 ___ gnome-shell[19745]: #11   557e6c470f48 i   resource:///org/gnome/shell/ui/main.js:257 (1c6c385d5cb8 @ 1181)
Sep 30 20:48:15 ___ gnome-shell[19745]: #12   557e6c470e98 i   resource:///org/gnome/shell/ui/main.js:146 (1c6c385d5ad8 @ 308)
Sep 30 20:48:15 ___ gnome-shell[19745]: #13   557e6c470e10 i   <main>:1 (1c6c3858d178 @ 48)
Sep 30 20:50:11 ___ gnome-shell[22177]: Unset XDG_SESSION_ID, getCurrentSessionProxy() called outside a user session. Asking logind directly.
Sep 30 20:50:11 ___ gnome-shell[22177]: Will monitor session 12
Sep 30 20:50:12 ___ gnome-shell[22177]: Telepathy is not available, chat integration will be disabled.
Sep 30 20:50:12 ___ gnome-shell[22177]: Failed to create file /run/user/1000/gnome-shell-disable-extensions: Error opening file “/run/user/1000/gnome-shell-disable-extensions”: File exists
Sep 30 20:50:12 ___ gnome-shell[22177]: Extension [email protected] already installed in /home/____/.local/share/gnome-shell/extensions/[email protected]. /usr/share/gnome-shell/extensions/[email protected] will not be loaded
Sep 30 20:50:12 ___ gnome-shell[22177]: Error looking up permission: GDBus.Error:org.freedesktop.portal.Error.NotFound: No entry for geolocation
Sep 30 20:50:13 ___ gnome-shell[22177]: Window manager warning: Overwriting existing binding of keysym 31 with keysym 31 (keycode a).
Sep 30 20:50:13 ___ gnome-shell[22177]: Window manager warning: Overwriting existing binding of keysym 34 with keysym 34 (keycode d).
Sep 30 20:50:13 ___ gnome-shell[22177]: Window manager warning: Overwriting existing binding of keysym 38 with keysym 38 (keycode 11).
Sep 30 20:50:13 ___ gnome-shell[22177]: Window manager warning: Overwriting existing binding of keysym 37 with keysym 37 (keycode 10).
Sep 30 20:50:13 ___ gnome-shell[22177]: Window manager warning: Overwriting existing binding of keysym 33 with keysym 33 (keycode c).
Sep 30 20:50:13 ___ gnome-shell[22177]: Window manager warning: Overwriting existing binding of keysym 32 with keysym 32 (keycode b).
Sep 30 20:50:13 ___ gnome-shell[22177]: Window manager warning: Overwriting existing binding of keysym 36 with keysym 36 (keycode f).
Sep 30 20:50:13 ___ gnome-shell[22177]: Window manager warning: Overwriting existing binding of keysym 39 with keysym 39 (keycode 12).
Sep 30 20:50:13 ___ gnome-shell[22177]: Window manager warning: Overwriting existing binding of keysym 35 with keysym 35 (keycode e).
Sep 30 20:50:14 ___ gnome-shell[22177]: GNOME Shell started at Wed Sep 30 2020 20:50:12 ____
Sep 30 20:50:14 ___ gnome-shell[22177]: Registering session with GDM
Sep 30 20:50:14 ___ gnome-shell[22177]: Error connecting to Nautilus

Did anyone find a workaround to the issue of snap apps not getting access to external stuff? For instance, TeXText, a famous LaTeX plugin for Inkscape won't work anymore because:

TexText for Inkscape 1.0 will not function if you installed Inkscape 1.0 via SNAP or 
FLATPACK. The reason is that Inkscape 1.0 will run in sandboxed mode in these environments and, 
hence, cannot access you LaTeX distribution to compile your snippets! This is a conceptional 
problem of snap/ flatpack, not of TexText for Inkscape 1.0

At the same time, reverting to a previous version of Inkscape seems not to be a solution because the older versions of TeXText used obsolete versions of gtk, which do not work properly under fresh versions of Ubuntu (>=18). My version is 20.04.

It also affects LaTeX functionality in xournal++ and more.

Apps installed via snap simply can't access LaTeX.

What to do?

Recently, Rabbit VCS stopped showing up in nautilus. Tried this method and this, no help.

I have Ubuntu 18.04 with GNOME Shell 3.28.4

This is what I get:

RuntimeError: Bad magic number in .pyc file
ERROR   rabbitvcs.services.checkerservice   org.freedesktop.DBus.Error.ServiceUnknown: The name org.google.code.rabbitvcs.RabbitVCS.Checker was not provided by any .service files
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/rabbitvcs/services/checkerservice.py", line 265, in _connect_to_checker
    OBJECT_PATH)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 241, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 248, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 180, in activate_name_owner
    self.start_service_by_name(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 278, in start_service_by_name
    'su', (bus_name, flags)))
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The name org.google.code.rabbitvcs.RabbitVCS.Checker was not provided by any .service files
Traceback (most recent call last):
  File "/usr/share/nautilus-python/extensions/RabbitVCS.py", line 197, in __init__
    self.status_checker.assert_version(EXT_VERSION)
  File "/usr/lib/python2.7/dist-packages/rabbitvcs/services/checkerservice.py", line 280, in assert_version
    pid = self.status_checker.CheckVersionOrDie(version)
AttributeError: 'NoneType' object has no attribute 'CheckVersionOrDie'

This method also doesn't help. I get:

ERROR   rabbitvcs.services.checkerservice   org.freedesktop.DBus.Error.ServiceUnknown: The name org.google.code.rabbitvcs.RabbitVCS.Checker was not provided by any .service files
    Traceback (most recent call last):
      File "/usr/lib/python2.7/dist-packages/rabbitvcs/services/check
erservice.py", line 265, in _connect_to_checker

Any ideas on how to get it showing up?

I installed Okular 1.10 via snap and, unlike the previous versions, it can't play videos embedded into pdfs due to the backend problem:

WARNING: bool Phonon::FactoryPrivate::createBackend() phonon backend plugin could not be loaded
WARNING: Phonon::createPath: Cannot connect Phonon::MediaObject ( no objectName ) to  Phonon::AudioOutput ( no
objectName ).

No matter how hard I try to export QT_PLUGIN_PATH with all the libs installed by

sudo apt install phonon4qt5 phonon4qt5-backend-gstreamer phonon4qt5-backend-vlc

or

sudo apt-get install phonon-backend-vlc

it still yields the same error.

strace doesn't even help to find out where Okular is trying to search the backend for.

Any hints?

I install Okular via snap because the Ubunutu's repository has an old version with a bug which nobody takes care of, namely, crash after quitting presentation mode.

The picture pretty much summarizes it:

Instead of popping up at the top panel, context menus appear where my main display's boundary is.

I'm under Ubuntu 18.04.4 LTS

Am using Ubuntu 18.4 and would like to get this kind of behavior: when I drag a window to the top, it should expand vertically into a half of the display.

I am using two displays, so it's not about dragging to the left or right side

Like this:

Is this possible somehow?

I know gtile but I want it to act by mouse dragging, not hotkeys

When I create, say, a fully black image and then zoom into it -- as far black starts dominating the screen -- it starts weirdly flickering.

For instance, doing this

I see something like (and it keeps flickering):

What could that be?

gpu_burn (video memory test) gives no errors.

And, as you can see, the recorded video does not contain any glitches.

Specs: ASUS G750JW Laptop, GTX765M video card.

I have troubles installing drivers for my TP-LINK Archer T3U on Ubuntu 18.04.

Having found out the device ID 2357:012d, I used this repo by @Jeremy31.

Namely, I downloaded the content, cd'ed into it, did make and make install.

What to do next?

sudo dkms add ./rtl8822bu

gives

Error! Could not find module source directory.
Directory: /usr/src/.-rtl8822bu does not exist.

How to properly install the driver?

Glad that notepad++ is now available in Ubuntu. And no, I won't switch to NotepadQQ -- its features are not nearly as many as in Notepad++

As far as I understand, it is run via sort of embedded Wine.

As always, fonts in menus are way too small in Wine applications, like this:

Usually, it is fixed via winecfg.

But, how to fix fonts in an embedded wine?

I have the following things in ~/snap/notepad-plus-plus:

.
├── 140
│   └── notepad-plus-plus
│       ├── backup
│       ├── localization
│       ├── plugins
│       ├── themes
│       └── wine-platform
├── common
│   ├── .cache
│   │   ├── fontconfig
│   │   └── winetricks
│   ├── .config
│   │   ├── fontconfig
│   │   └── menus
│   ├── .local
│   │   └── share
│   └── .wine
│       ├── dosdevices
│       └── drive_c
└── current -> 140

fontconfig contains a file fonts.conf with the following content:

<fontconfig>
  <dir>/snap/notepad-plus-plus/140/wine-platform/usr/share/fonts</dir>
  <dir>/usr/local/share/fonts</dir>
  <dir>/usr/share/fonts</dir>
  <include ignore_missing="yes">conf.d</include>
  <cachedir prefix="xdg">fontconfig</cachedir>
  <cachedir>/home/NAME/.cache/fontconfig</cachedir>
</fontconfig>

Any clues?

I keep getting these strange seg faults with Firefox. Every time I open the lid of my laptop after suspend, Firefox freezes and only force quit helps.

This has started a couple of weeks ago.

When I do dmesg | grep segfault, I get errors related to "Cameras IPC".

What could this be?

Does Firefox try to access my webcamera?

Here are error messages:

[129627.988672] firefox[25135]: segfault at 0 ip 00007
fd23cf4398b sp 00007ffdf3695598 error 6 in libxul.so[7fd23a7e9000+653b000]
[134905.990042] Chrome_~dThread[26745]: segfault at 0 ip 00007ff22ed607bd sp 00007ff2408c0b00 error 6 in libxul.so[7ff22dfe9000+653b000]
[170542.318548] Chrome_~dThread[22231]: segfault at 0 ip 00007f4935b607bd sp 00007f49476f9b00 error 6 in libxul.so[7f4934de9000+653b000]
[170542.345143] Cameras IPC[22624]: segfault at 0 ip 0000561b1bfec9fb sp 00007f826c48e870 error 6 in firefox[561b1bfe7000+32000]
[170542.345340] Chrome_~dThread[22435]: segfault at 0 ip 00007f8535a607bd sp 00007f85476b8b00 error 6 in libxul.so[7f8534ce9000+653b000]
[220194.968631] Chrome_~dThread[24003]: segfault at 0 ip 00007f978f7607bd sp 00007f97a1352b00 error 6
[220194.968634] Cameras IPC[24049]: segfault at 0 ip 000056030e8429fb sp 00007f5fc9962870 error 6
[220194.968636] Cameras IPC[30094]: segfault at 0 ip 000055cb1923c9fb sp 00007f3446b9f870 error 6
[220194.968639] Cameras IPC[9936]: segfault at 0 ip 00005603c8aa39fb sp 00007f80cd6bc870 error 6

Here is the info:

Firefox version 63.0
Ubuntu 18.04.1 LTS
NVidia driver metapackage from nvidia-driver-390

What is the most convenient option up for now?

I tried FUSE + encfs, but it turns out to be extremely slow (probably, due to FUSE).

Wrappers like Cryptomator or Boxcryptor are virtually unusable under Ubuntu. They are simply garbage as for now. Even slower and buggy.

There is odeke-em/drive, but it doesn't seem to offer a possibility to simply mount and work with a file manager, like FUSE allows.

Gnome offers functionality to connect to a Google account, but it's probably not possible to use encfs with it (?).

What solution is good in terms of:

1. multi-platformity
2. speed
3. functionality (simple mount & sync)

What is the correct way to open ports in Ubuntu and use Transmission in active mode?

I opened port in my Technicolor 7200 router using this guide as follows:

Then, I opened a port via terminal:

sudo ufw allow 6881

But, when I check if port is open using this service, it says:

What I am doing wrong?

Also, how to do port forwarding if my external IP is dynamic? I am trying to open some ports to get Transmission working in active mode.

Good day.

I am having a really hard time trying to get Ubuntu booting on my Samsung Series 3 laptop. Ubuntu has been installed (and it's the only OS), but didn't boot.

I have been through common hints and finally came to a conclusion that there might by a problem with my firmware which I am unable to resolve.

This is the story so far:

1. boot-repair complained about GPT. From reading this forum I concluded that since I want to use UEFI, this option does not apply to me. Here is the log, however:

boot-repair info http://paste.ubuntu.com/11842457/

2. Tried to add EFI entry manually. Did not work. The entry vanished after reboot

3. Read Roderick Smith's advice on creating a EFI entry manually using his rEFInd. I made a bootable USB, booted into shell and in the mapping table it displayed only a file system fs0 which is the USB itself. HDD is not present so I can't create an EFI since, frankly, shimx64.efi is not there. Really disappointing. How is that supposed to work at all?

I have spent days trying to figure out what to do. I really lack a simple and comprehensible guide on how to get Ubuntu working.

UPDATES

The EFI partition should contain a directory /EFI/ubuntu with four files: grub.cfg, grubx64.efi, MokManager.efi and shimx64.efi

How can I check that? I've mounted my EFI partition and ls'd it. It was empty.

Following Rod's advice, dmesg results are here

I think, I need to say that this laptop had preinstalled Windows 8 and so firmware might have been configured in a specific way. I decided to install Ubuntu after old HHD's death and switching to a new one.

After a fix via gdisk, Ubuntu finally appeared in rEFInd. I see file systems listed in shell other than the USB disk's one. However, I can't ls fs1 which is the EFI partition even though it was displayed as the shell started. Nor can I find shimx64.efi anywhere. Tried to boot Ubuntu from options available in rEFInd. There were two options:

1. vmlinuz-3.16.0-43-generic which resulted in unable to mount root fs on unknown block(0,0)
2. vmlinuz-3.16.0-43-generic.efi.signed with the same result

Screenshot

Trying to create a EFI entry bcfg boot add 4 fs1:\EFI\ubuntu\shimx64.efi "Ubuntu" failed obviously. fs1 is my EFI partition.

Another bad thing to notice: list of available partitions after that kernel fail is empty.

If I remove the USB with rEFInd, still no boot device is present.

Here is bootinfo: http://paste.ubuntu.com/11850314/

Thanks for the answers. Especially to Rod Smith.