Latest Ubuntu related questions

Score: 0
Michael Cooley avatar
Two parallel system problem
de flag

So, an upgrade to 20 (from 18.04) crashed on me Saturday. I had no access to the net to ask questions but eventually found that I had an old version 16 installation disk. I used the disk just to get on the net to download 20.x. I installed in parallel to the old system so that I wouldn't lose my data.

That's okay except that I need to start at ground zero -- software installs, configurations, on  ...

Score: 2
How to use OpenGL/3D acceleration in virt-manager with ubuntu?
us flag

Currently on Ubuntu 20.04 both as host and guest, I followed http://ryan.himmelwright.net/post/virtio-3d-vms/ and activated 3D acceleration on video, and OpenGL on dsplay, but on VM launch I get

SPICE GL support is local only for now and incompatible with -spice port/tls-port

How can I make it work?

UPDATE:

I disabled Listen Type to None

like thisenter image description here

but I get a very glitchy image:

enter image description here

Score: 0
SMMousaviSP avatar
Can't set MTU lower than 1280
mx flag

I'm using OpenVPN and it only works when my network interface MTU is 1200, I can change MTU to 1200 with this command with no problem:

ip link set dev eno1 mtu 1400

But as you know it's temporary, when I go to settings/network and change MTU, it will take effect and it is permanent but if I set it to any value below 1280 it will not take effect and when running this command, I see it's not going below ...

Score: 1
XhippoX avatar
Ubuntu 21.04 can't turn on after suspending
id flag

When I try using suspend, the laptop will not resume; I have to do a hard reset. The machine will also freeze while booting. How can I fix this?

Info about my system:

system info

Score: 0
Bob_Ross avatar
Unable to uninstall specific version of pip, Openstack Devstack Install error
uz flag

I am getting this error on ./stack.sh install

Devstack Error

When running pip3 --version, I can verify and shows proper version

pip 21.1.3 from /opt/stack/.local/lib/python3.6/site-packages/pip (python 3.6)

How do I find this version that ./stack.sh is trying to utilize

WARNING: You are using pip version 20.2.4; however, version 21.1.3 is available.

Most of the docs are about installing pip, or just r ...

Score: 0
Tagar avatar
archive.ubuntu.com rate limiting?
nz flag

Does archive.ubuntu.com:80 has rate limiting?

I have a customer that's launching bigger Spark clusters and as part of each worker node provisioning script, they are pulling some packages out of archive.ubuntu.com.

We're periodically getting

Cannot initiate the connection to archive.ubuntu.com:80

Does archive.ubuntu.com:80 has some sort of rate limiting on how many connections it can create? If s ...

Score: 0
CptNeko avatar
Tap events doesn't register on desktop only in current app
uz flag

I have a Linx 1010 tablet which is now running ubuntu 21.04. I just did some updates (1 month worth of) and now I have problems. I mainly use the touch screen of the tablet. After sometime (few minutes usually) I lose the ability to tap on the desktop environment (left side bar, desktop, top bar/menu), but touch events do register in the currently open app. Also when this happens the screen keyboard doe ...

Score: 1
cpol avatar
Spectacle in Kubuntu 20.04.2: every time I take a screenshot it opens a new instance window. Could the program reuse the same instance?
cn flag

I'm using Kubuntu 20.04.2 LTS and every time I take a screenshot with Spectacle (version 19.12.3) it opens a new instance window leaving me with multiple windows after a while. Is there a way to make it reuse the same instance and avoid the extra windows? I don't remember this was the behavior before. Thank you.

Score: 1
CoodleNoodle avatar
Laptop overheating, can't install nvidia graphics drivers
us flag

I'm fairly new to the linux world, I've installed and started TLP based on some other answers here.

One of the answers had mentioned that I should verify if my external graphics drivers have been installed, I don't think they are? I don't really know if this is some generic driver that's been installed and if it is the cause of the overheating issue. Here is the additional drivers tab from Software ...

Score: 0
yalin avatar
Ubuntu shuts down on battery
eg flag

I have Ubuntu 20.04 installed. I'm using a laptop, Lenovo Thinkpad X1 Extreme 2nd gen. When plugged in, there is no problem. But, when I use the laptop NOT plugged in (on battery), then it shuts down even it shows around 85% battery. Suddenly, it shows 1% and gives notification (battery low system will shut down). Then I plug in the battery cable and reboot system, it works perfectly fine. I looked at t ...

Score: 1
Ubuntu 2020 VM open to black screen with blinking underscore character after compact disc
pt flag
Nir

I compact disc (using vmware workstation) my Ubuntu OS (2020 64bit) and after the process of compact disc finished I power on the machine.

Than I proceeded to a black screen with Ubuntu text and 5 dots below it and continued to a blank black screen with a blinking underscore character (_).

black_screen with underscore

I have all my files in there and I can't access them. I have no snapshots because I ...

Score: 0
Mr. K avatar
KUbuntu Wifi disconnect automatically
jp flag

Kubuntu OS Wifi disconnects randomly and when I check wifi signal strength it shows 0% after restarting my pc this problem fix temporarily but no permanent solution

Score: 0
OroZoro avatar
What does "sudo chmod -R 777 /" do?
in flag

I did sudo chmod -R 777 / on our production server and everything got messed up. The hosted sites and API's stopped working, SSH said connection refused, it was a cyberpanel running cent os 7 and we couldn't even log into cyberpanel.

I thought that all users would have have all permissions on all files in the system and executed the command. I don't quite understand what went wrong.

Score: 0
Hemant Bhatt avatar
Connecting to remote SQL Server database over SSH
de flag

I am trying to connect to a remote SQL Server over SSH.

How can I do this via the terminal?

Score: 0
Cas avatar
How to kill a script running in the background, but only get the PID of the script when it was run with a certain flag
in flag
Cas

I can run multiple instances of a bash script in the background and everything is great. I have it setup in such way that some have -x as a flag and some not. See:

./test.sh &
./test.sh &
./test.sh -x &
./test.sh -x &

Now, I want to kill all scripts that were run with the -x flag. I always kill scripts running in the background using this:

ps -aux | grep -Po "^\S{1,}\s*\K\d*(?=.*test.sh ...
Score: 1
Shobeira avatar
C programming: Detect mouse pointer movement
pt flag

I am working on a project in which I need to set a flag only when mouse pointer has not moved for a period of time (e.g: 30s): if the mouse was idle for 30s, set no_movement (no_movement=true;).

So far, I know the X window server is the backend for many desktop environment and I know there is a comprehensive documentation for it on x.org and tronche.com (I got it from there that there is an event for po ...

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