Ryan's questions

I have a dual boot Windows Ubuntu laptop, and Ubuntu is split across multiple partitions (p4 and p5) so that my home folder is not on the main Ubuntu partition.

Then I must have accidentally uninstalled Python or otherwise destroyed my Ubuntu 22.04.01 (or 22.04.02?) installation, and I couldn't boot into Ubuntu at all.

So I formatted p4 and installed Ubuntu (desktop 22.04.03 LTS, a slight upgrade) fresh there, mounting as /.

Now, when I go to my ~/ home folder, I don't see my old files.

I found them in /media/myname/home/myname.

During installation, I didn't see an obvious option about how to set my existing p5 home partition as home (keeping my files, not formatting that partition).

If I messed up the installation, what settings should I choose on my next attempt so that my home files are back where they belong?

Or how can I fix it without reinstalling?

(I don't understand https://askubuntu.com/a/926856/48214, and I did use the same username, so apparently that's not sufficient. As answers at How to reinstall Ubuntu in the easiest way? and Keep /home directory when installing Ubuntu 14.04 suggested, I formatted / but left /home unformatted, hoping it would use /home as my new home folder too, but it didn't.)

Every question and answer I've seen so far is ancient or just about grep in the terminal.

I want an easy way to search my ~/code folder for certain strings. And I want the interface to allow filtering by file extension, etc.

I thought this would be built into Ubuntu. Is it?

I upgraded from Ubuntu 20.04 to 22.04.1 yesterday.

Now, whenever I toggle wifi back on (from temporarily being off), I have no internet access.

I checked:

ls -lah /etc/resolv.conf
lrwxrwxrwx 1 root root 28 Feb  7 14:24 /etc/resolv.conf -> /opt/valet-linux/resolv.conf 
cat /etc/resolv.conf

search attlocal.net
nameserver 127.0.0.1

Then I makes changes:

sudo vim /opt/valet-linux/resolv.conf
cat /opt/valet-linux/resolv.conf

nameserver 8.8.8.8

And then the internet works again.

But if I toggle Wi-Fi off and then back on, that file gets reset again.

I've already tried:

and:

cat /etc/netplan/01-network-manager-all.yaml 
# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManager
  ethernets:
    eth0:
      nameservers:
        addresses:
        - 8.8.8.8
        - 8.8.4.4

from https://linuxize.com/post/how-to-set-dns-nameservers-on-ubuntu-18-04/ and countless posts on AskUbuntu and StackOverflow.

I've also tried:

cat /etc/dhcp/dhclient.conf
...
# https://stackoverflow.com/a/48652642/470749
supersede domain-name-servers 8.8.8.8;

from https://stackoverflow.com/a/48652642/470749.

Nothing works. I'm losing my patience with Ubuntu.

What have I done to get myself in this mess? Thanks.

I've already seen this old question from 2011: How do I change the browser that gnome terminal opens links with?

and also How can I manually change the default web browser?

And I've already set my default browser to Chrome. To prove it, I run xdg-settings get default-web-browser and see the result google-chrome.desktop.

If I click URLs from emails or documents or even within the Terminal's output, they properly open in Chrome.

But running commands in terminal (such as to run a local webserver of a React app) continues to open my Brave browser, which I don't want.

How can I fix this?

I'm using Ubuntu on a laptop (with its built-in screen disabled) connected to a 3840x2160 external display.

Before sharing my screen on a video chat, I always like to switch the resolution down to 1920x1080.

I want to be able to quickly toggle the resolution of my external display between 3840x2160 and 1920x1080 via a keyboard shortcut, such as SuperPrntScrn.

This really old answer might be relevant as a starting place, but I'm not sure where to go from here.

As an example (but not on Ubuntu), I was able to do it on a Macbook following this answer.

I bought a Lenovo ThinkPad-E15-Gen-2 this summer and installed Ubuntu 20.04.3 (dual-boot alongside Win 10).

I've been experiencing many different problems in Ubuntu, this being one of them.

Google Meet video chats work fine.

However, when using Zoom 5.8.0, my webcam video is laggy*. And when I choose a Virtual Background, it never takes effect.

I've also tried plugging in a Logitech C270 webcam, but it has the same problem on Zoom.

I've reported my troubles to Zoom but haven't heard back.

*When I move my arm, for example, the image of myself on the screen moves after a slight delay, which is enough to be disconcerting.

I have a new Lenovo ThinkPad E15 that came with Windows 10 installed. I added Ubuntu 20.04 as an option (dual-boot).

After some tricky configuration, I eventually got hibernation working.

And using "Keyboard Shortcuts", I set up this hotkey to trigger systemctl hibernate:

Unfortunately I have 2 problems:

1. Upon typing that hotkey combo, I'm prompted for a password. Upon providing the correct password, the computer hibernates. I'd prefer it to instantly hibernate without prompting for any password.

2. Upon wake, I'm not prompted for a password. This seems like a security problem. I do want my laptop to require a password upon waking.

How can I fix those issues? Thanks!

I have a new Lenovo ThinkPad E15 that came with Windows 10 installed. I added Ubuntu 20.04 as an option (dual-boot).

Whenever the laptop sleeps (goes into a "suspend" state) and then later I wake it up, the Logitech wireless mouse scroll wheel doesn't work. ("Logitech MK270 Wireless Keyboard and Mouse Combo", but the only thing that doesn't work is the scroll wheel.)

I then unplug its USB-A dongle and replug it (I often need to do this multiple times), and then the mouse wheel works again.

I don't want to need to touch the USB plug at all. It should just always work. How can I fix this?

P.S. My question is very similar to Ubuntu 20.04: Scroll doesn't work for wireless mouse after system wakes up from suspended state, which has no answer yet.

P.P.S. I've confirmed that the USB switch in my setup is not related to the problem. The problem happens even when the tiny Logitech USB dongle is plugged directly into the laptop.

I have Windows 10 with Ubuntu 20.04.1 LTS in WSL. I have a Laravel app running via WAMP.

If I run sudo service cron start, Windows Task Manager shows "Very high" for "Power usage" for "cron".

Similarly, if I also run sudo service supervisor start, Windows Task Manager shows "Very high" for "Power usage" for "php7.4" background process, too.

And my PC fan is loudly spinning fast.

Running sudo service supervisor stop and sudo service cron stop of course kills the processes, and then my Task Manager is back to normal levels, and my fan quiets down.

Why is my Windows / WSL needing to use so much power for cron and supervisor services? How can I fix this?

I've never had problems with them when using a non-WSL Ubuntu system or when using Homestead Vagrant VirtualBox.

I have a Dell Latitude E6420 laptop plugged into a docking station, and the dock has 2 monitors (connected with DVI).

Also note that I've installed Ubuntu alongside (dual-boot) Windows 7.

I can't get the dual monitors to work both on Ubuntu (either 11.10 or 12.04) and Windows 7.

When I run lspci | grep VGA, I get:

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: nVidia Corporation GF108 [Quadro NVS 4200M] (rev a1)

If I then reboot and uncheck Optimus setting in the BIOS during reboot, I'm able to get the dual monitors to work in Ubuntu 12.04 (but I need to configure them every boot in Nvidia Settings).

When I run lspci | grep VGA, I get: 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [Quadro NVS 4200M] (rev a1)

But then if I reboot into Windows (leaving the Optimus unchecked), Windows can't detect external monitors, and the resolution is unacceptably low.

I've seen on many forum posts that this particular graphics card setup causes lots of headaches. I haven't been able to resolve my problem yet.

How can I use my external display on my laptop with intel and nvidia video cards?

How to use external displays with Intel driver on a NVidia/Intel hybrid system

nVidia Optimus , Unity 3D and Dual Monitors

"Just use VGA instead of DVI" isn't an option because my dock has only 1 VGA port (and 2 DVI).

Switching the BIOS setting on every reboot and then reconfiguring the display settings every time is tedious, time-consuming, and impractical.

Do you know how to make this work smoothly?

Thanks for your help!

P.S. see also: https://superuser.com/questions/434358/dell-latitude-e6420-dual-boot-ubuntu-windows-7-optimus-graphics-problems