Posts Tagged troubleshooting

Speed Up Linux Boot by Disabling Services

📅 June 19, 2017
What’s this? You installed Linux to a speedy M.2 NVMe SSD but boot times are not as fast as expected?

It might be a software issue. When Linux boots from power on, it runs a number of services before you ever see the login screen. Some of these services have timeouts and increase delays. Other services might be completely unnecessary, but they are loaded during boot anyway.

By disabling unneeded services, the Linux boot time can be reduced by a few seconds.

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Reduce a Computer’s Audio Output Line Hum

📅 August 30, 2016
isolator“Why do I hear a faint hum from my computer’s audio output?”

Computers are electrically noisy environments, and all of those wires and fans and whatnot operating at various frequencies can have unpleasant side-effects on a computer’s audio output.

If you enjoy listening to music played from your computer and if you use the computer’s analog stereo outputs (the 3.5mm line out jack) to connect to an external amplifier or receiver, then you have no doubt encountered the low-frequency hum effect.

Not a mere hiss due to a noisy sound card, but a low hummmmmmmmm that is heard consistently whether or not audio is playing and regardless of the volume level.

This can happen with any home audio equipment, not just computers. Often, it is caused by a ground loop, and the best way to reduce or nearly eliminate this hum is to electrically isolate the audio output (from the computer) from the audio input of the receiver/amplifier.

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Fixing Archive Manager’s Parsing Filters is Unsupported Message

📅 August 23, 2016
Have you seen this error message before?

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“Parsing filters is unsupported.” Appears while using Archive Manager to extract RAR files.

When installing a fresh Linux distribution on a new system, it is sometimes easy to assume that some software has been installed by default after becoming accustomed to using Linux on a reliable system that has had the software present for a long time.

One such example is Archive Manager. It will not extract all file formats by default until you install extra packages that give it that ability. RAR is one case. By default, Archive Manager will extract a few basic formats, such as ZIP, but not RAR.

We need to install additional software so other file formats can be extracted.

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Perform Computer Repair? Linux Could Put You Out of Business

📅 January 21, 2015
preferences-systemOver time, I have helped others with their computer issues and repaired and upgraded a number of Linux and Windows systems. As a result, I have noticed an interesting supposition: Linux has the potential to put you out of the computer repair business.

“How can this be?” you might ask?

Allow me to explain…

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How to Update the Linux Kernel

📅 December 6, 2014
kernel_versionThe Linux kernel is the engine of Linux. The core. And just as a newer automobile engine can offer improvements and features not found in older models, a newer Linux kernel can offer bug fixes and improvements lacking in earlier versions.

Linux kernels are continually being improved, updated, and endowed with newer features for improved compatibility with new hardware technologies, so if you are experiencing hardware issues, then a kernel update might be worth trying.

Maybe you seek a kernel more recent than what is offered in the current repository? Perhaps you are curious to install the latest kernel to see what it can do? Whatever the reason, this article will show you how to easily install an upstream kernel in your Ubuntu-based Linux distribution.

In this article, I will be upgrading a Linux Mint 17.1 64-bit Cinnamon installation with the latest stable generic kernel 3.16.7. Rest assured, the process is easier than it sounds.

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Broken MS Pro Duo Micro SD Adapter – An Internal Look

📅 December 5, 2014
broken_duo3The MS Pro Duo Adapter is a handy device that allows two micro SD cards to be used together as a single Memory Stick Pro Duo card for Sony devices.

However, it is flimsy and must be handled with extreme delicacy lest it succumb to…well..whatever it is that cheap-quality electronics succumb to.

One MS Pro Duo adapter that I purchased new quickly succumbed to electronic death despite my careful handling after two months. Since its next destination would be the dark depths of the garbage disposal, why not have a peek inside?

If you have ever spent countless hours pondering its internal mysteries, then ponder no longer. Here is a picture…

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Unable to Update Linux Due to Problem With MergeList Error

September 18, 2014

mergelistDuring a recent attempt to update Linux Mint and Xubuntu, I ran into an issue that I had never seen before.

Ubuntu Software System and Synaptic would both close immediately. No system updates or software installations or removals could be performed even though the system ran fine.

Attempting to update from the terminal also returned a wealth of errors that always reported a Problem with MergeList error.

Update September 24, 2014: This issue has apparently been fixed after performing a recent system update. Several programs, including apt-utils, have been updated in the repository, and the MergeList and Hash Sum mismatch problems no longer occur. The cause of this problem was most likely a software issue that has now been corrected.

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