Tag Archives: diagnostics

Diagnosing live distribution boot problems

Things I try to get live CDs and DVDs to boot on troublesome hardware.

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Testing your processor and cooling with cpuburn

Cpuburn is is a set of programs that load x86 processor cores as heavily as possible for system testing. Instructions are run to maximize heat production, putting stress on the processor itself, the cooling system, the motherboard (especially voltage regulators), … Continue reading

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Diagnosing LAMP application problems

A few tips for diagnosing problems with your LAMP application.

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Reviewing Windows log files

Windows has a number of logs that are useful for troubleshooting or making sure that all is in order. …

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Reviewing /var/log/messages

The log /var/log/messages shows most system messages, and as such it is useful for debugging all sorts of problems. …

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Reviewing the Xorg.0.log

The Xorg.0.log shows the messages of the most recent start of the Xorg server, which provides graphics on most Linux systems. As such it is useful for debugging all sorts of graphics problems. Its messages can be cryptic to the … Continue reading

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Reviewing dmesg

Dmesg logs the messages of the most recent boot, and as such it is useful for debugging all sorts of problems. Its messages can be cryptic to the uninitiated, so this article documents those messages that stumped me and what … Continue reading

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Fixing a damaged filesystem

Occasionally I come across a damaged filesystem due to an unclean shutdown. Most are easy to fix with a live distribution.

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Testing RAM with Memtest86+

Memtest86+ stress tests a computer's random access memory (RAM) for errors. Easy to run, it is one of the first diagnostic tools I use when facing a problem of unknown origin. …

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Removing viruses with KlamAV

I’ve always thought that removing viruses from within a running Windows system makes about as much sense as a surgeon trying to remove his own appendix. Better to boot the computer into a live Linux installation, mount the Windows partition, … Continue reading

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