Installing Corona(solar2dtux) in ubuntu

getting this error:
"chown: cannot access ‘/opt/Solar2D/SampleCode’: No such file or directory."

Ubuntu 20.04: Cursor blinking at boot after installing nvidia drivers

I’ve just installed NVIDIA proprietary drivers (nvidia-driver-460 from additional drivers). After reboot, I get a black screen with a cursor blinking. After a few seconds, I’ve moved to a tty using Ctl + Alt + F2, and without giving me time to login, the graphical interface started.

I rebooted a few times, and this behavior seems to continue: it will give me a black screen with a cursor blinking until I move to a different tty, and then X starts and asks me for normal login.

Is there any way to fix this?

Issue installing puppet agent on Windows Servers

I’m trying to setup a Puppet dev environment in my datacenter. I’ve configured the Puppet Master on Cent0S 7 along with two agents, also running RH CentOS 7. The Puppet version I am running on the systems is Open Source Puppet 7.3. When I try to install the agent on a Windows Servers either 2012R2 or 2019 I get the error ” Error: Could not download CA certificate: Bad Request”. Both windows 2012R2 and Windows 2019 are “fresh installs.” I’ve checked the puppet.conf file on both of the agents (windows boxes) and they’re correct. Both systems have the FQDN of my Puppet Master. The command(s) I’m using to gen the cert is “Puppet Agent -t”… and … “Puppet SSL bootstrap”. I get the same error with both commands. I’m able to resolve both of the windows computers on the PMaster and I’m able to resolve the PMaster on both of the computers. The Linux agents are able to communicate with the PMaster without a problem. I’ve tried both versions of the windows agent. Version 7.10_x64 and 7.00_x64. Any ideas?

Thank you in advance.

Why the heck installing pop theme turned my whole ubuntu into pop os?

I installed pop theme in my ubuntu 20.04. But after next system update my whole ubuntu turned into pop os.
Now how I am supposed to get my good old ubuntu back?

Mechanics for Explorers installing cyber implants?

One of my players (naturally, magos) wants to install an implant (sub-dermal armour for now) into himself. How can i handle that mechanically?

I am guessing something to the effect of madicae test or such with certain degrees of failure lowering implant effectiveness. But maybe that problem is already solved?..

Installing from adb installs app for all users

I have a LineageOS 17.1 system on Pocophone F1, unrooted. When I install an apk through USB using adb, adb not run as root, the app is installed both on my main admin user and on a secondary user on my phone. How do I force adb to only install the app for my main user only?

kde – Icon problem installing 2 different versions of the same application via flatpak

I recently installed both versions of the same application via flatpak (QGIS, “stable” and “lts” branches). After installation, however, I could start only the last installed version (branch “lts”) from the application menu (KDE). I can instead start both versions using the terminal with:

flatpak run --branch=stable org.qgis.qgis  

flatpak run --branch=lts org.qgis.qgis  

So I thought about creating a second entry in the applications menu for the “stable” version of the application with a menu editor (kmenuedit) using a different icon to distinguish the two versions. The application started but the icon was the same for both versions.
The two versions of the application are installed in:


Each version has its own org.qgis.qgis.desktop file and its own icon folder in its own folder. I tried to change the path of the icon in the .desktop file of the version I wanted to differentiate and this worked for the applications menu but not for the taskbar and the dock (Latte Dock) where the same icon always appears for both versions.
I noticed that in addition to the org.qgis.qgis.desktop files inside the folders of each of the two versions of the application I have another org.qgis.qgis.desktop file related only to the version installed last in:


where there are the .desktop files for all applications (Darktable, RawTherapee, Zoom etc.) installed via flatpak. The application icons (along with the icons of all other applications installed via flatpak) are installed in:


How could I be able to use two different icons that work both in the application menu, in the taskbar and in the dock?

memory – the computer does not start after installing additional RAM

I have 4 slots for RAM. I bought 4 boards for 2GB. when I insert all 4, the computer does not start. starts only if I insert 2. tell me, please, can I put all 4 and so that the computer starts? win 7 64bit. motherboard: manufactured by NT Computer model AGENT 6400/250. CPU: Intel (R) Core (TM) 2 CPU 6400 @ 2.13 GHz, 2133 MHz, cores: 2, logical processors: 2

I’m trying to insert this plate:


productivity – I am spending more time installing software than coding. Why?

I am developing code mainly using Bash, C, Python and Fortran and recently also HTML/CSS+JavaScript. My OS is Ubuntu.

Maybe I am exaggerating, but I figured that I kind of spend more time getting software (Debian and Python packages mainly, sometimes also from source) to be installed properly than actually developing code. And I am not talking about coding vs. debugging, debugging is part of coding for me.

It happens so often to me that I update my Linux packages and then my Python packages and my software does not work anymore, because some .so files have another name now, and Python does not find them anymore. Or I setup a totally clean Ubuntu VM, install a package with pip and get two screens of error message, because some debian package was not installed. I am not a system administrator, I enjoy developing software. But this just annoys me. I do not want to inform myself on all the 157 Python packages and thousands of Debian packages I have on my system and know what their dependancies are. I want to write code and implement new functionality into my code.

What am I doing wrong?