Dimitris Sfounis's questions

I'm on Ubuntu server 22.04 (Jammy).

I'm still a bit of an Ubuntu newbie and I wanted to apt upgrade a package that I have previously installed via apt and the relevant PPA. Turns out I can't, apt can't see the latest version. The reason is that the team behind the PPA failed some builds for the latest version, and apt, logically, thinks I have the latest version since the newer version has failed builds.

The update is pretty important so instead, I wanted to manually install/upgrade the package via the project Github's provided binary. By that, I mean downloading a .tar.gz provided by the project team.

What happens to the package afterwards? Will apt keep tracking a separate version? Will apt refuse to update something that I upgraded manually? Will I shoot myself in the foot and end up with two instances of the same package?

Any info would be appreciated.

Good evening,

I'm trying to change some of the colours of my login screen in my Ubuntu 18.04. I followed some questions here on AskUbuntu, and edited my css files at /usr/share/gnome-shell/theme/gnome-shell.css (I'm using that configuration) - Specifically, I changed the values of .lockDialogGroup to a nicer dark gray.

My login screen is indeed now a nice dark gray instead of that hellish purple.

However, if I lock my computer without shutting down the machine, I still get a different purple gradient, which I haven't managed to change. I'm serching around but since I don't even know what to call this "behind-the-shield" screen, I can't find relevant results.

I suspect the login screen and the lock screen are two different managers altogether.

Here's a short mp4 video of me literally filming my screen, to make you understand which color I'm trying to change:

https://imgur.com/8aBWhd4

EDIT: There seems to be a discrepancy between my first-after-boot login screen, and my login-after-locking screen.

first Login screen after boot:

After-lock login screen:

Seeing as how I'm starting to hate 18.10 more and more, I've decided on a downgrade.

Also seeing as how a downgrade is not really recommended and I'll have to probably go with a total reinstall, what's the optimal way for me to keep my data and only have the live-USB touch the OS and its related files only?

Think "soft" reinstall.

A strange problem manifested on my machine recently, and I'm really at a loss when trying to resolve it, as I don't even know how to google this.

I was watching Netflix full-screen one fine day, on Firefox v64.0, on my Ubuntu 18.04.1 laptop. At some point, I thought I saw ghost images overlaid on my video. I thought my eyes were just tired and paid no attention to it, I closed the laptop and went to get some coffee.

Later on, while watching a YouTube video (again, fullscreen) and I thought I saw the ghost image again. I turned up my screen's brightness all the way to 100% and lo-and-behold, I could see my wallpaper through the full-screen video!

This has been going on for some days now, and I wasn't able to find what's causing it. Full screen videos on Netflix and YouTube have some sort of 10-20% transparency, and I can see my wallpaper behind them. This only happens when the video is playing. When I pause the video, transparency goes away. You can understand how this played with my mind a little bit at first.

Local video files on my machine, played through mpv, have no transparency issues.

To give you an example, I'm sorry but I literally took a photo of my laptop's monitor.

Here's a full screen YouTube video of a pure black screen, for 10 hours (It's just a video of all-black playback):

The image in the back (the ghost image I was seeing) is of course, nothing else other than my wallpaper:

The transparency is also captured in regular screenshots. Here's one of the above 100%-black-video fullscreened and playing. It isn't as visible because it's a software screenshot, but you can see the ghost image there too if you squint.

Let's start with saying that I'm a very inexperienced not-so-poweruser. Last night I was trying to move every file in a directory to another location, but accidentally did this:

mv stuff /* /home/user/Downloads

I was connected to the remote VM through SSH, and from that command onward, everything started crashing and burning. No command on the terminal would be recognised, not ls, not cd, nothing, and the left part of the console, which usually stated something like

Dimitris#>_

Had turned to just

#>_

I restarted the machine and now it boots me into

grub rescue>_

I tried ls, I've got three hd()s:

hd(0), hd(0,msdos1), fd(0)

• First one has an unrecognized filesystem (possibly the normal hd that I messed up since I moved everything to /home/user/Downloads)
• Second one has some directories:
• Third one's first sector cannot be read.

Anything I can do to revert the last change, or anything? Or is it a fatal messup?

I'm fine with just destroying the VM and creating again, but I'd rather not lose my /var/www/ directory.