Posts Tagged troubleshooting

Thunar Not Showing Thumbnails

📅 January 4, 2018
“Thunar is not showing any thumbnails despite thumbnail generation enabled. Why?”

I ran into this issue in Linux Mint 18.3 Cinnamon when using the Thunar file manager. Traversing directories functioned fine, but no thumbnails were generated for media files, such a images, videos, and music containing album art.

Here is one technique I tried to make the thumbnails appear.

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Fix the Immediate Resume Following Suspend

📅 December 5, 2017
Linux Mint 18.3 was released a few days ago!

Despite being a superb Linux distribution, some fundamental problems remain. One such problem is the suspend/resume feature.

After installing Linux Mint 18.3 MATE, I found that if I assign a keyboard shortcut to suspend the system, the Linux system will go into suspend mode but immediately resume.

Power management issues, such as suspend and hibernation, have plagued Linux systems with a variety of distributions across a variety of hardware that I have tried, but since Linux Mint is my preferred distribution, this it the one I am focusing on.

Windows does not have this problem from my usage. Given the same hardware, I have found that Windows will suspend/hibernate/shutdown without any of the problems that are apparent with Linux, such as blank resume screens (requiring a system reset button press), no resuming, dead hibernation (never waking up), or immediate resumption following a suspend.

This article shows a quick way to fix the suspend issue so that we can assign a keyboard shortcut that will suspend Linux. Pressing the power button on the computer will wake up the system.

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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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