I run my program on my college server and have to provide a log file to update the results of the program.
Accidently I submitted a program without updating the name of the log file and hence the older version of the log file is no longer accessible to me. But the results are important for me and hence I want to restore the previous version of the log file.
Is there any way to do restoration?
I brought a Brother printer one year ago and I am consistently facing an issue. The issue is that the printer works fine sometimes and does not print sometimes. But note that the test page printing always works.
The problem is only with the pages I want to print other than the test page.
The operating system is Ubuntu 20.04.3 LTS. The printer is Brother HL-L2321D.
This printer works well sometimes when I disconnect it, then remove it, and restart the system. Sometimes it stops printing suddenly after printing some pages. Sometimes it will not print but the status shows the printing completed.
Some times printer works after updating (sudo apt-get update) and upgrading (sudo apt-get upgrade). Sometimes printer stops printing after the same updating and upgrading.
You may get more information from the following details in the test page
Media Limits: 0.11 x 0.11 to 8.15 x 11.47 inches
Job ID: HL-L2320D-series-337
Driver: br12320d.ppd
Driver Version: 6
Description: Brother HL-L2320D series Printer
Location: .....................
Make and Model: Brother HL-L2320D series, using brlaser v6
Printer: HL-L2320D-series
Created at: Wed Sep 22 13:47:52 2021 Printed at: Wed Sep 22 13:47:52 2021
Now, I want to know the exact file location due to which the issue is arising consistently?
I selected Large Text option in seeing of Universal Access in Ubuntu settings.
After selecting it, whenever I move my mouse, it is showing some small blank page symbols floating along with mouse. It is inconvenient to see.
Is it possible to stop them appearing?
I generally connect to my institute server using ssh user@ipaddress. It works fine.
Recently, I change IPv4 network address, network mask and Gateway in my Ubuntu system in order to get internet. I didn't change proxy settings on my system.
After modification, I cannot able to connect to the institute server using ssh user@ipaddress. The error is as follows
ssh: connect to host xxx.xx.xx.xx port xx: Connection timed out
Is it due to the change I did on my system or is it due to the issue from server side?
I also pinged to ip address using ping ipaddress. It is working properly
I want to execute a similar command to the following command from this post
sudo rmdir /usr/share/ghostscript/9.25/iccprofiles
The actual command is
sudo rmdir /snap/gimp/367/usr/share/ghostscript/9.50/iccprofiles
When I execute the following command, I am encountering the following error:
rmdir: failed to remove '/snap/gimp/367/usr/share/ghostscript/9.50/iccprofiles': Read-only file system
How to delete the directory?
From comments, I came to know that I cannot delete the file.
I asked this question inorder to make my printer work. Printer is perfectly fine, but seems there are lot of issues with OS and hence it is behaving randomly. I tried with latest version of Ubuntu as well as Linux mint. So I read this and then this.
Now, I have no clue of how to proceed further. Do I need to report the issue? If yes, I am not expertise in finding the exact reason for issue such as the (wrong) file, (error)line etc.,
My printer is behaving randomly except for the test page. It always works well on test page.
Sometimes it works well on all applications.
Sometimes it works on Chrome, chromium, but not on Firefox and pdf readers.
Next time it works well on all browsers and not on pdf readers.
Next time it does not work on any application except test page.
But, it always show led signal whenever I give print command. And also it shows printing and printed, without being printed.
The printer is HL-L2321D and I am following instructions from their site. The instructions are from here and here.
So, I tried on installing all related drivers. One of the last instruction is to restart lpr or lprng in /etc/int.d. But I don't have such file.
While I am working on my laptop, a popup (notification) came for upgrading my 18.04 system to 20.04.
I accepted it and after an hour the system got logout. I tried a lot to log in, but the same log-in screen is appearing.
So, I did the hardware shut down.
After that, the system is not normal. A black screen is appearing with a blinking mouse on the top.
How to fix it?
My trials:
#1:
I can go to bios menu via F12.
I tried with the two options ubuntu and its next one, but result is same as title.
#2
I can go to terminal type with some random clicking on Atl+ctrl plus some F keys. I tried with these, but of no use.
I can update, upgrade etc., and the lsb_release -a is showing 20.04
Is it possible to fix it from tty?
I am facing a problem related to GPU's.
I am trying to execute a program in my laptop and facing the following issue.
AssertionError: Found no NVIDIA driver on your system. Please check that you have an NVIDIA GPU and installed a driver from http://www.nvidia.com/Download/index.aspx
When I check the graphics of my system, it is showing that the graphics of my system is Intel® UHD Graphics 620 (KBL GT2).
So, I am suspecting that my system does not have any NVIDIA gpu. Is it true?
If true, is it impossible to run the program on my system (by making changes)? Or is there any way to make the program runnable on my system?
I am installing the package named torch in Ubuntu 18.04 via:
python -m pip install torch
When the download completes by 99%, the system hangs for some time, and gets the job killed. You can see it in the following image.
I tried multiple times, but its getting killed every time.
What is the reason behind it? And how can I overcome this issue?
Here's my system information:
I ran a command from terminal. I did not use any parallelization techniques.
The command is currently running on my system and completed quarter(25%) of the work. Took a whole day for that first quarter. Three quarters(75%) of work is remaining for completion.
Can I parallelize it now without disturbing the running command?
I recently installed UGet download manager.
When I try to open it, it is showing the error:
Failed to launch "UGet"
Desktop file didn't specify Exec field
How to handle this issue?
How to increase the size of overall appearance in Ubuntu 18.04. Consider the following screenshots with low appearance as shown below
In my system I can hear sound only from here while modifying it in settings
and occasionally system popup/error sounds.
And sound is not coming from any other videos, songs, Youtube, test speakers etc.,
I followed this and some other, but no use. Why I can able to hear from that and no where else except while modifying output volume?
When I select to search by voice of Google search, it is saying No Internet Connection as shown below.
Along with Google voice search, dictation, voice notebook, Speech notes, Google voice to text, all websites I tried so far for the purpose of speech to text conversion are not working. Since a week I found no website that can convert my speech to text.
I installed SpeechNotes and several other apps on my Android mobile phone for speech to text conversion, all are working properly either with or without proxy.
I am using Ubuntu 18.04 laptop. It is mandatory to use a proxy in my laptop. But I did check with both proxy and without a proxy, not working in both cases. My mic is working properly. I checked through this site, both with and without a proxy.
By mic test (with and without proxy), we can say that there is no issue with mic and browser, (as well as proxy). Since I can use speech to text in my Android mobile either with or without proxy, we can say that there is no issue with proxy. So, there can be only issue with using speech to text websites in Ubuntu.
What have do to resolve the issue?
I tried doing several answers for this question, but found out that the answers are not compatible for the latest Android Studio and Ubuntu 18.04.1.
My doubt is that Which directory I have to select for as Android SDK location?
Background: I Installed Android Studio from software center. It was shown Android SDK tool is missing at final step of installation. I ignored it and finished installation and proceeded till this step.
I had a fresh install of Ubuntu 18.04.1 LTS.
I did upgrade, update. I had an active internet connection. I searched for Android studio and got the following result.
What is the issue of not showing in the list?
I generally use proxy for getting internet. Say proxy is xxx.xx.x.x.
But if the proxy is down, I select none and apply to system wide as shown below
After selecting none also, if I check for echo "$http_proxy" or echo "$https_proxy". the output is my old proxy address xxx.xx.x.x.
I checked in /etc/environment and .bashrc for any proxy export statements but none are there. Why proxy is still active?
Where I have to change, so that the system won't consider proxy that I use generally?
I executed the following command in Ubuntu 16.04
rosdep update
The error I am getting is as follows:
Internet is working fine and the links in error are also in working condition.
I am installing ros in Ubuntu 16.04 and all went well until the following command
rosdep update
The error I am getting is as follows
reading in sources list data from /etc/ros/rosdep/sources.list.d
ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/osx-homebrew.yaml]: (https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/osx-homebrew.yaml)
ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/base.yaml]: (https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/base.yaml)
ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/python.yaml]: (https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/python.yaml)
ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/ruby.yaml]: (https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/ruby.yaml)
ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/releases/fuerte.yaml]: Failed to download target platform data for gbpdistro:
error [Errno -3] Temporary failure in name resolution> Query rosdistro index https://raw.githubusercontent.com/ros/rosdistro/master/index.yaml
ERROR: error loading sources list: (https://raw.githubusercontent.com/ros/rosdistro/master/index.yaml)>
I am installing using this. Issue is happening at command 2 of 1.5;
I edited the /etc/environment file with export statements and no issue with such proxy statements.
Is there any need to place the export proxy statements any where?
How to fix this issue and update properly?
I installed Ubuntu 16.04 alongside Linux mint 18.
I installed of plenty softwares, changed path variables and many other things that made my Ubuntu messy.
I need to restore Ubuntu as before. So, i want to format Ubuntu partition to make it new again (as fresh OS after installation). How can I do it through terminal or some other means without installing OS again?