Wayland breaking taskbar and more https://askubuntu.com/questions/1566765/wayland-breaking-taskbar-and-more

I was testing out Wayland and it seems to have fixed some performance issues i had on x11. However it breaks my taskbar and other programs. holding the cursor over a program in the taskbar sometimes doesn't show a thumbnail, unresponsive on click, programs being completely blacked out or occasional flickering. Given the massive performance boost on Wayland I want to switch to it but ATM this makes it almost completely unusable for me.

  • Operating System: Kubuntu 24.04
  • KDE Plasma Version: 5.27.12
  • KDE Frameworks Version: 5.115.0
  • Qt Version: 5.15.13
  • Kernel Version: 6.17.0-23-generic (64-bit)
  • Processors: 16 × AMD Ryzen 7 9800X3D 8-Core Processor
  • Memory: 60,5 GiB of RAM
  • Graphics Processor: NVIDIA GeForce RTX 4060/PCIe/SSE2
  • NVIDIA-SMI 595.58.03
  • Driver Version: 595.58.03
  • CUDA Version: 13.2
Interested in helping out in some way https://askubuntu.com/questions/1566763/interested-in-helping-out-in-some-way

I'd be interested to help out in some way. IRC was my favorite thing to do. Clearly other chat mediums have taken the trophy but yeh if that's still useful let me know. I seem to have an abundance of time at the moment which is great

How To Prevent Multiple Instances Of Thunderbird Snap? https://askubuntu.com/questions/1566762/how-to-prevent-multiple-instances-of-thunderbird-snap

I'm using Xubuntu 25.10, and have an over sensitive mouse which makes it easy to accidentally double click on a launcher button. I find this particularly annoying with the Thunderbird Snap because I thought running two instances of Thunderbird should not be possible.

Is there any way to stop this happening?

Whenever i boot ubuntu from usb and select 'Try or Install Ubuntu' it gives the following errors: https://askubuntu.com/questions/1566761/whenever-i-boot-ubuntu-from-usb-and-select-try-or-install-ubuntu-it-gives-the

error: file '/casper/vmlinuz' not found. error: you need to load the kernal first.

What could the problem be and how do i fix it?

Basically im trying to install Ubuntu on my Dell Inspiron 3501 laptop which currently runs Windows 11 ive disabled Secure Boot and made the bootable usb as the first priority when booting Im using an 8GB USB which i a bootable USB drive using Rufus

And i dont know what else to do? How do i fix this?

Cursor jumping randomly https://askubuntu.com/questions/1566760/cursor-jumping-randomly

After upgrading to Ubuntu 26.04, the cursor keeps jumping at random inside bluefish editor. Someone suggested using Touchpad Indicator to disable touch pad. This does not install. Also, I would like to have the touchpad active.

ViewSonic VG2456V pop-up lights - driver available? https://askubuntu.com/questions/1566759/viewsonic-vg2456v-pop-up-lights-driver-available

I'm quite new to Ubuntu, and trying to deal with a weird hardware device. I have a ViewSonic VG2456V monitor, which has a little pop-up device with a camera as well as some lights to either side of it. The camera works fine! However, the lights are an unusual thing that doesn't exist on hardly anything, and so doesn't appear to be autodetected.

On Windows\Mac, there is a tool available called VDisplay Manager, which allows you to adjust these light settings' power and brightness (along with a bunch of other things like colourblind settings, firmware updates, &c.).

Unfortunately, ViewSonic doesn't provide this same tool for Linux. Is there any equivalent tool which might be able to tap into this weird device on the monitor?


[edit per request of Daniel T]

VCP code 0x02 (New control value             ): No new control values (0x01)
VCP code 0x03 (Soft controls                 ): No button active (sl=0x00)
VCP code 0x0b (Color temperature increment   ): 100 degree(s) Kelvin
VCP code 0x0c (Color temperature request     ): 3000 + 35 * (feature 0B color temp increment) degree(s) Kelvin
VCP code 0x10 (Brightness                    ): current value =    30, max value =   100
VCP code 0x12 (Contrast                      ): current value =    70, max value =   100
VCP code 0x14 (Select color preset           ): 6500 K (0x05), Tolerance: Unspecified (0x00)
VCP code 0x16 (Video gain: Red               ): current value =   100, max value =   100
VCP code 0x18 (Video gain: Green             ): current value =   100, max value =   100
VCP code 0x1a (Video gain: Blue              ): current value =   100, max value =   100
VCP code 0x1e (Auto setup                    ): Auto setup not active (sl=0x00)
VCP code 0x20 (Horizontal Position (Phase)   ): Maximum retries exceeded
VCP code 0x30 (Vertical Position (Phase)     ): Maximum retries exceeded
VCP code 0x52 (Active control                ): Value: 0x00
VCP code 0x59 (6 axis saturation: Red        ): current value =    50, max value =   100
VCP code 0x5a (6 axis saturation: Yellow     ): current value =    50, max value =   100
VCP code 0x5b (6 axis saturation: Green      ): current value =    50, max value =   100
VCP code 0x5c (6 axis saturation: Cyan       ): current value =    50, max value =   100
VCP code 0x5d (6 axis saturation: Blue       ): current value =    50, max value =   100
VCP code 0x5e (6 axis saturation: Magenta    ): current value =    50, max value =   100
VCP code 0x60 (Input Source                  ): HDMI-1 (sl=0x11)
VCP code 0x62 (Audio speaker volume          ): Volume level: 70 (00x46)
VCP code 0x6c (Video black level: Red        ): current value =    50, max value =   100
VCP code 0x6e (Video black level: Green      ): current value =    50, max value =   100
VCP code 0x70 (Video black level: Blue       ): current value =    50, max value =   100
VCP code 0x72 (Gamma                         ): 0x0078 - Invalid sl value. sl=0x78, sh=0x00
VCP code 0x7a (Adjust Focal Plane            ): current value =     3, max value =     3
VCP code 0x86 (Display Scaling               ): Linear expansion (compression) on h and v axes (sl=0x08)
VCP code 0x87 (Sharpness                     ): current value =     2, max value =     4
VCP code 0x8d (Audio mute/Screen blank       ): Invalid value (sl=0x0a), Invalid value (sh=0x00)
VCP code 0x9b (6 axis hue control: Red       ): current value =    50, max value =   100
VCP code 0x9c (6 axis hue control: Yellow    ): current value =    50, max value =   100
VCP code 0x9d (6 axis hue control: Green     ): current value =    50, max value =   100
VCP code 0x9e (6 axis hue control: Cyan      ): current value =    50, max value =   100
VCP code 0x9f (6 axis hue control: Blue      ): current value =    50, max value =   100
VCP code 0xa0 (6 axis hue control: Magenta   ): current value =    50, max value =   100
VCP code 0xaa (Screen Orientation            ): 0 degrees (sl=0x01)
VCP code 0xac (Horizontal frequency          ): 1064 hz
VCP code 0xae (Vertical frequency            ): 59.90 hz
VCP code 0xb2 (Flat panel sub-pixel layout   ): Red/Green/Blue vertical stripe (sl=0x01)
VCP code 0xb6 (Display technology type       ): LCD (active matrix) (sl=0x03)
VCP code 0xc0 (Display usage time            ): Usage time (hours) = 2462 (0x00099e) mh=0xff, ml=0xff, sh=0x09, sl=0x9e
VCP code 0xc6 (Application enable key        ): 0x00ff
VCP code 0xc8 (Display controller type       ): Mfg: RealTek (sl=0x09), controller number: mh=0x00, ml=0x27, sh=0x78
VCP code 0xc9 (Display firmware level        ): 2.0
VCP code 0xca (OSD/Button Control            ): OSD enabled, button events enabled (sl=0x02), Host control of power unsupported (sh=0x00)
VCP code 0xcc (OSD Language                  ): English (sl=0x02)
VCP code 0xd6 (Power mode                    ): DPM: On,  DPMS: Off (sl=0x01)
VCP code 0xda (Scan mode                     ): Normal operation (sl=0x00)
VCP code 0xdb (Image Mode                    ): Full mode (sl=0x01)
VCP code 0xdc (Display Mode                  ): Standard/Default mode (sl=0x00)
VCP code 0xdf (VCP Version                   ): 2.2
How to turn "Alt+l+e+up-key+enter" combination into a shortcut? https://askubuntu.com/questions/1566755/how-to-turn-altleup-keyenter-combination-into-a-shortcut

How to turn "Alt+l+e+up-key+enter" combination into a shortcut?

I'm using vlc to watch media and I'd like to create a shortcut that does the same job as a key combination for slowing or speeding up video. The key combination pressed in order is "Alt+l+e+up-key+enter" for speeding up and "Alt+l+e+down-key+enter" for slowing down.

What do I type in the command line for Setting Custom Shortcut ?

Edit: instead of pressing "Alt+l+e+down-key+enter" every time to speed up I'd like to create a shortcut for it.

Thanks

How to make my laptop more power eficient by using the E/LPE cores on my hybrid intel processor? https://askubuntu.com/questions/1566748/how-to-make-my-laptop-more-power-eficient-by-using-the-e-lpe-cores-on-my-hybrid

I have intel laptops with 13th and 14th generation processors with both P and E cores. I'd like the system to schedule onto the E cores and never the P cores when the system isn't under load, to save power. Automatic and transparently ideally.

How can I make list of packages in Ubuntu main repository? https://askubuntu.com/questions/1566747/how-can-i-make-list-of-packages-in-ubuntu-main-repository

How can I make list of packages in Ubuntu main repository? I tried Ubuntu Software application. It is not loading info from the server. Maybe, command line is better.

I'm getting python segmentation fault (core dumped) randomly https://askubuntu.com/questions/1566742/im-getting-python-segmentation-fault-core-dumped-randomly

It's my requirements.txt

python = ">=3.11,<3.14"
starlette = ">=0.37.2"
pydantic = ">=2"
numpy = ">=1"
pandas = ">=2.2.3"
requests = ">=2"
httpx = "0.28.1"
httpx = { version = "0.28.1", extras = ["http2"] }
anyio = "4.12.1"
uvloop = "0.21.0"
aiohttp = ">=3.9.0"
bittensor = "10.0.1"
bittensor-cli = "9.17.0"
async-substrate-interface = "1.5.15"
substrate-interface = "1.7.11"
sqlalchemy = ">=2.0.36"
psycopg2-binary = ">=2.9.10"
alembic = ">=1.14.0"
python-dotenv = ">=1.0.1"
setuptools = ">=68"
pyyaml = ">=6.0"
properscoring = ">=0.1"
numba = "0.63.1"
scikit-learn = ">=1.3.0"
xgboost = ">=2.0.0"
lightgbm = ">=4.0.0"
tensorflow = ">=2.15.0"
arch = ">=6.2.0"
rich = ">=13"
wandb = ">=0.19.4"
tenacity = "9.0.0"
google-cloud-logging = "3.12.1"
matplotlib = ">=3.10.0"

And if I run the python script, it gets unkown errors randomly which didn't happened in the past. Nowadays I changed my new pc and installed new WSL. OS: Ubuntu 24.04 LTS Python: 3.10.20

Some times gets

Traceback (most recent call last):
  File "/home/work/Synth/synth-50/solutions/CRYPTO_HIGH/train_sigma_model.py", line 2300, in <module>
    main()
  File "/home/work/Synth/synth-50/solutions/CRYPTO_HIGH/train_sigma_model.py", line 2243, in main
    df_train, df_val, error = prepare_training_data(
  File "/home/work/Synth/synth-50/solutions/CRYPTO_HIGH/train_sigma_model.py", line 1449, in prepare_training_data
    df = load_price_data(
  File "/home/work/Synth/synth-50/utils/fetch_price.py", line 197, in load_price_data
    df = _load_price_rows_from_db(engine, query, {
  File "/home/work/Synth/synth-50/utils/fetch_price.py", line 60, in _load_price_rows_from_db
    chunk = pd.DataFrame.from_records(rows, columns=columns)
  File "/home/work/Synth/synth-50/.venv/lib/python3.10/site-packages/pandas/core/frame.py", line 2500, in from_records
    arrays, arr_columns = to_arrays(data, columns)
  File "/home/work/Synth/synth-50/.venv/lib/python3.10/site-packages/pandas/core/internals/construction.py", line 842, in to_arrays
    data = [tuple(x) for x in data]
  File "/home/work/Synth/synth-50/.venv/lib/python3.10/site-packages/pandas/core/internals/construction.py", line 842, in <listcomp>
    data = [tuple(x) for x in data]
SystemError: ../Objects/listobject.c:336: bad argument to internal function

but sometimes gets Segmentation fault (core dumped) directly.

And after all suspicious errors happening, always the segmentation fault happens. Any suggestion?

Dirty Frag vs. Copy Fail mitigation - need to understand the difference https://askubuntu.com/questions/1566732/dirty-frag-vs-copy-fail-mitigation-need-to-understand-the-difference

I have been lurking on StackExchange for years, finally made an account a year ago, so this is my first post. I understand that there are standards to be upheld when posting questions, so I hope I will raise to those standards with mine.

Server scope: Azure-deployed VMs
Server versions:
Ubuntu Server 22.04.5 LTS (kernel 6.8.0-1052-azure)
Ubuntu Server 20.04.6 LTS (kernel 5.15.0-1089-azure)
Did I searched for and read relevant articles ? Yes, every single relevant one from vetted sources.

When Copy Fail came out, I was tasked with manual mitigation. According to Ubuntu blog article for Copy Fail, the mitigation was:

# Drop this into /etc/modprobe.d/disable-algif_aead.conf
install algif_aead /bin/false

After that, I was to check if modules are loaded, if yes, remove them, and then I performed a preventative reboot, because I was authorized to do so.

Somehow, with Dirty Frag, this is no longer enough. According to Ubuntu blog article for Dirty Frag, I am to do this:

# Drop this into /etc/modprobe.d/dirty-frag.conf
install esp4 /bin/false
install esp6 /bin/false
install rxrpc /bin/false

And then, additionally, I have to run:

update-initramfs -u -k all

After that, same steps as for Copy Fail.

So my first question here: I would like to understand why is suddenly initramfs update required ? Are ESP4/ESP6/RXRPC that deep in kernel that I have to alter the image from which the server boots ? I understand that if initramfs update fails, I will be in a world of hurt. While backups will be in place, I would rather not kill the server.

Furthermore, according to Mitigation section on Github post for Dirty Frag, simply dropping in the same config, removing mods if active, and then dropping cache is enough. So i.e. the same thing that I did for Copy Fail, except the additional step for cache drop.

Second question here: official article on Github from the person who found Dirty Frag is different from official Ubuntu recommendation. Why ?

I am the Linux admin here, so I should know this stuff, but in this case, I simply don't know or understand, what is the difference, and who do I trust here - do I trust the person who discovered the vulnerability and produced the steps for it, or do I trust the OS distribution vendor with their directions from their blog post ?

Thank you.

Ubuntu 26 / gnome 50 default image-viewer is not closing with esc key https://askubuntu.com/questions/1566728/ubuntu-26-gnome-50-default-image-viewer-is-not-closing-with-esc-key

While I understand the Escape key is now reserved for exiting full-screen mode, this change severely disrupts the workflow for users accustomed to Ubuntu 24.04's behavior. Modifying core keyboard shortcuts across releases creates consistency issues. There is any work around to solve it?

Dual boot: can I increase my Linux file system even though Windows partitions are in the way? https://askubuntu.com/questions/1566717/dual-boot-can-i-increase-my-linux-file-system-even-though-windows-partitions-ar

I am quite new at Linux. A while ago I made my laptop dual boot and I was a bit stingy on how much space I allocated to Linux. When I had some hardware issue, my computershop replaced my 500GB SSD with a 1TB SSD, but just cloned the old partitions on it.

These are the partitions:

Device          Start             End      Sectors         Size  Type
/dev/nvme0n1p1        2,048       534,527       532,480    260M  EFI System
/dev/nvme0n1p2      534,528       567,295        32,768     16M  Microsoft reserved
/dev/nvme0n1p3      567,296   759,959,809   759,392,514  362,1G  Microsoft basic data
/dev/nvme0n1p6  759,961,600   957,476,863   197,515,264   94,2G  Linux filesystem
/dev/nvme0n1p4  957,476,864   959,320,063     1,843,200    900M  Windows recovery environmen
/dev/nvme0n1p5  959,320,064 1,000,214,527    40,894,464   19,5G  Microsoft basic data

Sum of sectors   1,000,210,690      
Physical sectors 1,953,525,168      

I rearranged p6 to its actual place in the SSD.

So when I followed the instructions to enlarge partition 6, I was surprised to find that it hadn´t worked even though there were no errors. The reason became obvious once I studied this table: there is no unallocated space behind the Linux filesystem; 2 windows related partitions are in the way.

I'm not sure how to solve this. I would like to increase the Linux partition but I'm not sure if it is possible to do that non-contiguously. Do I need to reorder these partitions? Is that possible?

Headless setup not reachable by SSH [closed] https://askubuntu.com/questions/1566715/headless-setup-not-reachable-by-ssh

I am trying to build a server using ubuntu server with very low power consumption. The specs are:

Asrock H610M-HVS/M.2

Intel i3 12100F

some NVME SSD

Ubuntu Server 26.04 LTS

And that's it. I can successfully boot into ubuntu if i connect a GPU and use SSH, but I really don't want to have it installed permanently. I have set up a static IP address. Could it be an ubuntu issue, i.e. its POSTing fine but not booting?

Asrock support says it works with Windows, default BIOS settings, so I tried:

sudo systemctl set-default multi-user.target

Didn't work.

I thank everyone in advance, every answer is welcome!

EDIT

It is a confirmed Ubuntu issue, as it works with Windows 11.

Ubuntu 26.04 Samba does not work, new files are not showing up in Windows client https://askubuntu.com/questions/1566657/ubuntu-26-04-samba-does-not-work-new-files-are-not-showing-up-in-windows-client

I installed the latest Ubuntu 26.04 in a virtual machine. The host OS is Windows 11.

I want to share the home directory of Ubuntu with Windows. The Samba version is:

$ smbd --version
Version 4.23.6-Ubuntu-4.23.6+dfsg-1ubuntu2

when I create a new file in Ubuntu, it doesn't show in Windows.

If I restart the smbd service with systemctl restart smbd then it does show up.

Tiny font in KDE sddm "maya" greeter https://askubuntu.com/questions/1566627/tiny-font-in-kde-sddm-maya-greeter

For KDE SDDM, the default greeter "maya" uses a tiny condensed font and cannot be set to anything else by normal means, e.g. in /etc/sddm/font.conf. This looks awful when paired to any display hardware with a slightly modern resolution.
So, how do I change the font?

This appears to be disregarding "highdpi" settings and the scaling referenced in many postings.
Here we are at the font setting, disregarding scaling.

enter image description here


The specifics; On Ubuntu 24.04 (Gnome), with How to Change Default Desktop Environment done.

Tiling not working and extra cursor in the corner https://askubuntu.com/questions/1566514/tiling-not-working-and-extra-cursor-in-the-corner

Tiling not working and extra cursor in the corner

I am experiencing an issue on Ubuntu 26.04 where the Ubuntu window tiling functionality stops working and a secondary cursor appears in the top-left corner of the screen after I stop moving the pen on my drawing tablet. I use a Huion H430P graphics tablet with the OpenTabletDriver.

System Info

  • OS: Ubuntu 26.04
  • Kernel: Linux 7.0.0-15-generic
  • Desktop Environment: GNOME 50
  • Display Server: Wayland
  • CPU: Intel i5-3470
  • GPU: NVIDIA GeForce GTX 1050 Ti
  • GPU Driver Version: 580.142

Tablet Info

  • Model: Huion H430P
  • Driver: OpenTabletDriver v0.6.7

Visual Reference

A video showing the issue can be found here: Reddit Link

Kubuntu 26 with no sound on HP laptop https://askubuntu.com/questions/1566471/kubuntu-26-with-no-sound-on-hp-laptop

installed Kubuntu 26 hoping to resolve a recurring problem when trying to install older Linux versions. I'm using a dual boot setup on an HP Omen with an Nvidia RTX 4070 and an i7 13th gen. The best I've managed is to boot by modifying the GRUB configuration with pci=noapic. This allowed me to access the desktop, install the proprietary Nvidia595 driver, and it works. However, the sound from the speakers and the headphone jack doesn't work. Only Bluetooth works. I want to be able to remove the noapic command and boot normally. I've already disabled Secure Boot and tried everything I found online (drivers, other boot modes, other variations of noapic, nomodeset, etc.). Is there a patch that will fix this? Is one planned?

  • Operating System: Kubuntu 26.04 LTS
  • KDE Plasma Version: 6.6.4
  • KDE Frameworks Version: 6.24.0
  • Qt Version: 6.10.2
  • Kernel Version: 7.0.0-15-generic (64-bit)
  • Graphics Platform: Wayland
  • Processors: 24 × 13th Gen Intel Core i7-13700HX
  • Memory: 32 GiB of RAM (31.0 GiB usable)
  • Graphics Processor 1: Mesa Intel UHD Graphics
  • Graphics Processor 2: NVIDIA GeForce RTX 4070 GPU/PCIe/SSE2
  • Laptop Manufacturer: HP
  • Product Name: OMEN by HP Transcend Gaming Laptop 16-u0xxx
  • System Version: Type1ProductConfigId
Is there an alternative of VNC for KDE Wayland as server? https://askubuntu.com/questions/1565787/is-there-an-alternative-of-vnc-for-kde-wayland-as-server

I used to use VNC but it does not work with Wayland. How can I connect to my Kubuntu 24.04 (Wayland) computer from another computer in another network so that I can access its GUI, just like in VNC?

Upgrade 22.04 to 24.04 is not working. WARNING: root:file 'noble.tar.gz' missing https://askubuntu.com/questions/1563334/upgrade-22-04-to-24-04-is-not-working-warning-rootfile-noble-tar-gz-missing

I'm trying to do a release upgrade from Ubuntu 22.04 to 24.04 using do-release-upgrade.

I am getting these errors:

Err Upgrade tool
  503 Service Unavailable [IP: 91.189.91.82 80]
Fetched 833 B in 6s (136 B/s)
WARNING: root:file 'noble.tar.gz' missing
Failed to fetch
Fetching the upgrade failed. There may be a network problem.

I have verified the network and availability of the specified target IP, and there were no issues. I also tried both US and normal repositories in /etc/apt/sources.list

All of my apt update/upgrade patching went fine. There were no issues there.

MegaRaid-SAS device not working on Ubuntu24.04LTS /Kernel 6.8 by default - Kernel options fix https://askubuntu.com/questions/1548052/megaraid-sas-device-not-working-on-ubuntu24-04lts-kernel-6-8-by-default-kerne

I have a MegaRAID SAS 9440-8i reporting on lspci as 'Broadcom/LSI MegaRAID Tri-Mode SAS3408'.

It seems that with the move from Ubuntu 22.04LTS (Kernel 5.5) to Ubuntu 24.04LTS (Kernel 6.8), my RAID controller is no longer visible.
My dmesg shows a megaraid-sas section, but it crashes before startup, meaning I can't access any of my disks.

I read somewhere that adding intel_iommu=on and iommu=pt would fix it, and indeed with those kernel options it works, but I'm wondering if anyone knows why? What is the default kernel option change that broke it, and what is iommu that makes it work?

Wine Mono/Gecko installer stuck https://askubuntu.com/questions/1546567/wine-mono-gecko-installer-stuck

I ha ve a fresh install of Ubuntu 22.04 with Wine 9 and the latest PlayOnLinux.

Everytime I create a new virtual drive by POL, during the initialization it tries to download/install Mono and Gecko, but the download phase stucks forever (the internet connection has no problems).

What could I do to solve that issue?

Thank you so much!

Command line sendmail quit working after June 6 https://askubuntu.com/questions/1413016/command-line-sendmail-quit-working-after-june-6

Since June 6 all scripts sending mail to my gmail account have stopped working and Thunderbird is asking repeatedly to enter my password, which has not changed in the last week. I am running Ubuntu 20.04, 5.13.0-44-generic #49~20.04.1-Ubuntu SMP Wed May 18 18:44:28 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux. I have turned on 2 step verification and have checked my Google settings at least twice. I have now fixed Thunderbird, using the information here: https://support.mozilla.org/bm/questions/1369886 I am using sendmail to alert myself of scripts, such as backups, that have run. I have added code to put the logfiles in my logs directory but would still like the alert emails. I used this article to reconfigure exim4, but that did not fix the problem: https://www.talk-about-it.ca/setting-up-exim4-with-gmail-and-2-factor-authentication/

June 10: All of a sudden I have a flood of gmail messages generated by scripts appearing in my inbox. I had just changed the password in exim4.config to the application password! Hooray! Thanks for the help. Generating the application password via Google and plugging that into /etc/exim4/exim4.conf.template did the trick. That is in the line starting with client_send, line 1887 approx. The line is:

client_send = : username@gmail.com : 'userpassword'

Mark as solved.

What is the “run command console” (Alt+F2) in GNOME? https://askubuntu.com/questions/1340680/what-is-the-run-command-console-altf2-in-gnome

I don’t quite understand what the run command console is, and I don’t understand two points.

  1. There is a famous way to restart gnome-shell: Alt+F2 and then “r” . What is this “r”? Just an internal command of the run console? Then how many internal commands does the run console have?
  2. I can execute my own scripts through the run console. However, I have to specify the full path, only then the script will work. If I use the shortcut ~/my-path/script, the script opens in the editor as the Display command in Nautilus. I don’t understand why.
UBUNTU 18.04 Server: multiple netplan route-policy rules, but only one works https://askubuntu.com/questions/1117580/ubuntu-18-04-server-multiple-netplan-route-policy-rules-but-only-one-works

UBUNTU SERVER 18.04 LTS with 2 GE NICs

eno1: 172.22.1.1/20
eno2: 10.11.1.34/30

netplan yaml:

network:
  version: 2
  renderer: networkd
  ethernets:
    eno1:
      addresses: [ 172.22.1.1/20 ]
      gateway4: 172.22.0.1
      nameservers:
          addresses:
          - "172.22.0.53"
      routing-policy:
        - to: 172.22.224.0/19
          table: 211
          priority: 10
        - to: 192.168.201.0/24
          table: 200
          priority: 20
      routes:
        - to: 0.0.0.0/0
          via: 172.22.0.254
          table: 211
        - to: 0.0.0.0/0
          via: 172.22.0.1
          table: 200

    eno2:
      addresses: [ 10.11.1.34/30 ]
      routing-policy:
        - from: 10.11.1.34
          table: 222
          priority: 8
        - to: 10.128.0.0/16
          table: 222
          priority: 5
      routes:
        - to: 0.0.0.0/0
          via: 10.11.1.33
          table: 222

When I apply the configuration, restart the networking or use netplan apply, only one of these routing-policies works:

When I use netplan apply:

  1. eno1:

    • First time, only the first routing-policy works.
    • Second time, only the second routing-policy works.
    • Third time, only the first routing-policy works.
  2. eno2

    • Every time, only the second routing-policy works.

I wrote the yaml file as the netplan.io examples told.

kernel panic-not syncing: VFS: unable to mount root fs on unknown block(0,0) https://askubuntu.com/questions/1094510/kernel-panic-not-syncing-vfs-unable-to-mount-root-fs-on-unknown-block0-0

OK, so I have fallen down a rabbit hole without much of a back up plan so I am hoping someone will be able to guide me through recovering my Linux install. I have limited knowledge of linux systems and Ubuntu so it's probably what has got me in the mess in the first place so will try and best explain what has happened so far.

So I needed to clear space in /boot as Webmin was reported low storage.

uname -a reported 4.4.0-137-generic as my current kernal.

I ran a similar command as this, making sure the current kernel wasn't listed:

sudo dpkg --list 'linux-image*'|awk '{ if ($1=="ii") print $2}'|grep -v `uname -r`

This as now left me with 4.4.0-137-generic, 4.4.0-138-generic and 4.4.0-139-generic, however none of them boot as I get the following error:

kernel panic-not syncing: VFS: unable to mount root fs on unknown block(0,0)

I have tried the chroot options below:

sudo fdisk -l
sudo mount /dev/sdax /mnt
sudo mount --bind /dev /mnt/dev
sudo mount --bind /dev/pts /mnt/dev/pts
sudo mount --bind /proc /mnt/proc
sudo mount --bind /sys /mnt/sys
sudo chroot /mnt

However after I mount sda1 I can't go any further, mnt shows the /boot folder and I can mount the dev folder as they don't exist in /mnt.

I have tried the following when I was able to boot in to 4.4.0-137-generic and a few other options:

update-initramfs -u -k 4.4.0-137-generic

Which hasn't resolved the issue, I used to be able to see the GRUB menu for recovery options however that is no longer showing, I am currently getting in to tty which is showing 4.4.0-139-generic when running the uname -a command.

This is my first post so excuse incorrect formatting and the lack of information for steps taken, might have been a little gun ho with this all. Let me know if I can amend anything for future reference.


So to follow up, found my root partition is under /dev/mapper/Server--vg-root and I was able to mount all the folders for chroot however the recovery CD was 32-bit and need 64 which is my next step.

However the folder /dev/mapper/Server--vg-root/boot is empty, though /dev/boot is not. Do I need to mount it using the following command or am I supposed to be repairing /dev/mapper/Server--vg-root/boot to contain items?

sudo mount --bind /dev/sda1 /mnt/boot

Or how do I check which folder Grub is using to confirm which one needs repairing?

Is there any tool to convert pdf to ppt/odp slides in Linux/ Ubuntu offline? https://askubuntu.com/questions/797836/is-there-any-tool-to-convert-pdf-to-ppt-odp-slides-in-linux-ubuntu-offline

I am looking for a tool that converts PDF into PPT files or supports any tweak to import PDF files into LibreOffice-impress, LibreOffice-Draw imports the PDF but that does not do the job. So far I am trying to use a workaround called pdftk+pdfchain to burst the pages of the PDF file into single page PDF files and then converting the single page PDF files into images using ImageMagic and importing them into a PPT slide.

Cannot open terminal https://askubuntu.com/questions/668374/cannot-open-terminal

I'm new to ubuntu and took many days trying to solve a problem I'm having.

I searched the Internet and I have not found anything concrete that can fix it so this is my problem:

When I try to open the terminal, it is closed immediately and does not show me anything. I tried to run with CTRL + ALT + F1 or F2, and CTRL + ALT + T, but I get nothing and the moment it opens, it closes.

One thing I've discovered is that if I connect with the guest account then I can access the terminal.

Is there any GUI application for command rsync? https://askubuntu.com/questions/514963/is-there-any-gui-application-for-command-rsync

I am currently synchronize between local folders in my computer by following command:

rsync -av --delete "[source]" "[destination]"

Now I want to do this via GUI. so, Is there any GUI available for Ubuntu which works similar as by command rsync? and How can I install it?

How can I convert .msg files (Outlook email message) into .eml? https://askubuntu.com/questions/282691/how-can-i-convert-msg-files-outlook-email-message-into-eml

I have just started using Ubuntu & Thunderbird.

I have saved my Outlook emails in my hard disk and they have an .msg extension. Now when I try to open them in Thunderbird it doesn't open them because Thunderbird used .eml extension.

Please advise how I can convert my old emails from Outlook into Thunderbird format.