I am trying to burn an ISO file into a USB disk for installation. Most of the time, I am using Win32DiskImager to do the job. But today, I can not start the Win32diskimager program. I uninstalled it and download a fresh copy from Sourceforge and install it. Still notContinue Reading
It is a promised post for a long time. My Canon imageClass MF4450 multifunction printer. I ordered the parts in January and received them in February. I said I will make a post to show you how to replace the broken hinger. Let me put the pictures below which recordedContinue Reading
I have NAS in my home network. It provides some shared folders. I mapped the drive with this kind of shared folders. It depends on the SMB service to connecting them. Wikipedia has a page for SMB or Server Message Block. The SMB protocol was designed to allow computers toContinue Reading
It is Autumn now. The temperature is under 15°C during the daytime, under 10°C at nighttime. So it is time to turn on the furnace because my house is heated by a forced-air heating system. I turned the thermostat to 20, but nothing happens. So I go to check theContinue Reading
There are a lot of guidelines online to show you how to configure the Network Interface. Here is my own records for Ubuntu 20.04. The configuration file of Network interface is /etc/network/interfaces The sample of Static IP config on eth0 interface as below After the change, use the followingContinue Reading
I have a main (primary) router with the Internet connection in the living room. And I have two devices in the basement. How I make them connect to the Internet is a problem. Here I use secondary router wireless connect to the primary router. And two devices wired to connectContinue Reading
Are you looking for ways to preserve vital paperwork? Paper can only last for so many years, even when you preserve it well. This is one reason why people are digitizing their most important documents. If you read on, you’ll learn how to digitize and why it matters. We alsoContinue Reading
It is in November 2019. There is a laptop, Dell Inspiron 5570. It is my mother in law’s laptop. Recently she found it is so slow and ask my help. I connected this laptop through Teamviewer. I checked the CPU usage and found it is so high and the temperatureContinue Reading
Because my old Gitlab is running on a Ubuntu 16.04 server. The latest LTS version of Ubuntu is already 18.04 for more than one year. I was thinking about to directly upgrade the server from 16.04 to 18.04. There are still some chances it may fail and the server mayContinue Reading
Here is the background. It is a php script that is accessed through a browser. Server: Ubuntu 18.04 Web server: Nginx 1.14 php: php7.2-fpm The script always stoped on 60 seconds. The Nginx error log is shown below: 2019/10/23 14:05:18 [error] 996#996: *950 upstream timed out (110: Connection timedContinue Reading
After the installation of MySQL server or MariaDB on Ubuntu, I would like to use phpMyAdmin or Adminer to access the MySQL server. But the first time the error comes like below. Access denied for user ‘root’@’localhost’ mysqli_real_connect(): (HY000/1698): Access denied for user ‘root’@’localhost’ Here is the solution toContinue Reading