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Category: Technology

Xerox 7232 communication failure

The Xerox 7232 color laser printer we're leasing at work has a very vague problem causing communication failures all the time. When you boot it, it works fine. After a while it starts getting slow. And if you wait even longer, it doesn't work at all anymore. This happens within a few minutes. Read More »

Installing grub on RAID1

When you have your kernel image and grub boot stages on a Linux software RAID1 partition, installing grub needs a bit of trickery. Read More »

Fixing “expected NAV packet but none found” error on some downloaded DVD’s

With certain DVD's, Xine fails when seeking in the movie saying "Expected NAV packet but none found". It seems that I have finally found out how to fix this and it is not even difficult. If the theory is correct, it only happens with DVD's obtained as an ISO image. Read More »

Impossible to fix file collision when upgrading qt 4.3 to 4.5

I'm trying to upgrade my qt 4.3 to 4.5. Version 4.5 seems to be split up in several ebuils, one of which is qt-dbus. When trying to install qt-dbus, it says that the files conflict with qt-4.3. This is only normal, because in version 4.3, the files did belong to qt. Read More »

Really enabling portage compile cache

I always thought I had portage's compile cache enabled, but upon recent inspection, it appears that I didn't. What was missing, was the package dev-util/ccache. I also increased the cache size to 2 GB, as per the Gentoo documentation. Read More »

Correcting Spamassassins stale mirror configuration

My spamassassin updates daily by running sa-update. Recently, I've been getting failure notices that mirror was no longer available. This was because of a known bug, apparantly. So, I deleted the MIRROR.BY file and ran sa-update again. Read More »

Adding locales in Ubuntu

I wanted the dates on my Kubuntu system to be shown as Dutch dates. Therefore, I needed to add a locale. The place to do it is in /var/lib/locales/supported.d/local. It now contains this: Read More »

Gentoo update: WiFi drivers (iwl4965)

When I got the Wireless working on this laptop (a Lenovo T61), I was using Linux kernel 2.6.25. I remember that it was quite a pain, because the iwlwifi stuff had only just stabilized enough to replace the (now deprecated) ipw stuff. One of the things I didn't get working at the time was Monitor mode. Read More »

Customizing Google AdSense alternate ads

When AdSense runs out of inspiration (i.e.: no targeted ads are available), it displays public service ads by default. You can choose to replace this with a custom ad of your own choosing. To do this, you have to put a HTML page somewhere and change the alternate ads settings for the appropriate ad unit: Read More »

Complete WordPress Atom feed: an XSLT transformation

Previously, I tried obtaining a full Atom feed without pagination from WordPress. I didn't succeed, so I ended up writing an XSL transformation which merges all the pages of this Atom feed into one valid Atom XML stream. Read More »