How to check if TRIM is enabled on Linux Mint

After installation of a NVMe SSD in the laptop, it needs to be well-managed so that it's life does not decrease. To do this, most modern systems use TRIM to manage and delete unwanted blocks of data on the SSD. To check if TRIM is enabled on the Linux Mint laptop, open a terminal window … Continue reading How to check if TRIM is enabled on Linux Mint →

How to install kvm on Fedora Linux

To install KVM on Fedora, open a terminal window and enter:$ sudo dnf -y install bridge-utils libvirt virt-install qemu-kvm <enter> Next, install virtual machine management tools:$ sudo dnf -y install virt-top libguestfs-tools <enter> Start the daemon:$ sudo systemctl start libvirtd <enter>$ sudo systemctl enable libvirtd <enter> This is a required step to use Android Studio's … Continue reading How to install kvm on Fedora Linux →

How to speed up boot time performance on Linux if it boots slowly

My Linux computer was very slow to start up. It took approximately 4 minutes to get to the login prompt. Before performing any of the steps below, take a backup of the data on the computer. Also, you follow the steps below at your own risk. No one is responsible for whatever you do with … Continue reading How to speed up boot time performance on Linux if it boots slowly →

How to fix excessive CPU usage by process tumblerd on XFCE desktop in Linux

Noticed that each time I added or downloaded a file, it resulted in excessive use of the CPU. This happens on XFCE desktop in Linux. Looking up the process list, found that tumblerd was utilizing up to 86% of the CPU and leading all other applications and processes to be very slow. Tumbler is used … Continue reading How to fix excessive CPU usage by process tumblerd on XFCE desktop in Linux →

Unable to log into LuCi web interface after upgrading OpenWRT from barrier-breaker to chaos-calmer

I applied the Chaos Calmer OpenWRT firmware upgrade on the TP Link WDR4300 router. Very important to note that if you already use OpenWRT on the router, install the sysupgrade and not the factory binary firmware file. Use factory only when upgrading from the factory TP Link firmware. For first time install use this file … Continue reading Unable to log into LuCi web interface after upgrading OpenWRT from barrier-breaker to chaos-calmer →

Best free cloud storage service for data with Linux support

If you want good storage with great synchronization support for Linux, you can try any of the following cloud storage services for your data:Dropbox (2 GB free)Copy.com (15 GB free) - Now defunctmega.co.nz (50 GB free)SpiderOak (2 GB free)The above 3 are very popular and have Linux Synchronization clients that make it easy to synchronize … Continue reading Best free cloud storage service for data with Linux support →

Enable, start, stop or disable services in Ubuntu

Enter the commands shown in italics in a terminal window to: List all services running: $ sudo service <service> --status-all <enter> Disable a service from startup: $ sudo sudo service <service> disable <enter> Stop a service: $ sudo service <service> stop <enter> Start a service: $ sudo service <service> start <enter>

Manage services in Ubuntu using GUI – bum

You can manage Ubuntu services using a GUI tool called the Boot-Up Manager (bum). Open a terminal window and enter the following commands. $ sudo apt-get install bum <enter> $ sudo bum <enter>

List all services running in Ubuntu

Open a terminal window and enter the command shown below to list all the services running on your Ubuntu computer. $ sudo initctl list | sort <enter>

Firewall Builder iptables compile error – failed to start program

Following error was reported when compiling the Firewall Builder rulesets for iptables. Compiling rule sets for firewall: xx1firewall fwb_ipt -v -f /home/user/xx1firewall.fwb -d /home/user -o /home/user/xx1firewall.fw -i id8922X6568 Error: Failed to start program fwb_ipt Last error: The process failed to start Current state of QProcess: The process is not running. To resolve this error, install … Continue reading Firewall Builder iptables compile error – failed to start program →