Blog.dvl.pl - An IT Hobbyist's Blog

Why using server.error-handler-404 is bad?

Karol — Wed, 12 May 2010 22:17:45 +0000

OK, maybe the title is a bit too provocative. More precisely said, “why using server.error-handler-404 directive for clean URL rewrites in WordPress is a bad solution” would be more appropriate. Problem: Switching from Apache to Lighttpd some time ago I used the simplest solution to port my WordPress installation. The quick and dirty way to do it as [...]

DualView on VirtualBox Windows guest

Karol — Thu, 04 Mar 2010 17:11:40 +0000

Situation: Multiple displays are still scarcely supported in virtualization solutions. Theoretically, VirtualBox supports multiple displays, though it applies only to Windows guests when using VBoxHeadless (RDP access). See the User Manual for the details. In practice it’s not that trivial to set up, and I had to spend a few days overcoming some problems on the way. [...]

Changing Last.fm username

Karol — Thu, 04 Mar 2010 15:47:47 +0000

Problem: A while ago I conducted a wide-scale login change for most of my Internet services. Some of them, however, were reluctant to allow effortless username change. This applies in particular to Last.fm. According to the Last.fm’s FAQ it’s not possible to change one’s initial username. Neither is it possible to move the collected stats/scrobbles to a [...]

U232-P9 USB-Serial adapter drivers

Karol — Sat, 09 Jan 2010 13:18:18 +0000

Problem: My driver CD for the USB-Serial converter has gone AWOL, so I had to look for the appropriate file. My adapter is a generic “no-name” (PL-2303 based) as can be seen in the photos: It’s a Prolific chip, so this site should help. I remember not having any problems with the default driver on my desktop (Windows [...]

Cool’n'Quiet in Debian

Karol — Sat, 12 Dec 2009 12:05:58 +0000

I have been looking recently for a way to enable Cool’n'Quiet functionality in Debian. To my surprise it wasn’t supported per default (at least in my case). I’ve installed cpufreq-info and cpufreqd (though powernowd should also do fine), but it was complaining about missing kernel support and no governors. I found a really nice How-To [...]

DebianWRT on USR9108 struggle

Karol — Sat, 21 Nov 2009 10:51:57 +0000

Straight to the matter – yes, it’s possible. In fact I’ve been happily using a Debian system on my US Robotics USR9108 for more than a month. Or at least sort of Debian, but I will explain this later. Getting USR9108 to work flawlessly with OpenWrt alone was quite a struggle, so pushing the limits to [...]

Realtek r8169 Wake on LAN (WoL) problems

Karol — Sun, 15 Nov 2009 19:32:29 +0000

Problem: I can’t get my on-board Gigabit Ethernet controller to work with Wake on LAN functionality on Debian lenny. The card goes dead on shutdown, no LED activity whatsoever. Things I have tried: Standard ethtool setting: ehttool eth0 wol gives [...] Supports Wake-on: umbg Wake-on: g But just to be sure, I put this into /etc/init.d/ethtool #!/bin/sh /usr/sbin/ethtool -s eth0 wol g and made it [...]

grub 0.97 inode size limit in Debian

Karol — Sat, 17 Oct 2009 10:31:32 +0000

Problem: Another thing which went wrong porting my Debian etch installation to a VirtualBox image is grub not handling 256 byte inode size of ext3 filesystems. I used a Debian lenny ISO to partition the virtual HDD, so per default it was created with an inode size of 256 bytes. Then I dumped the data. Previously, [...]

resume: could not stat the resume device file

Karol — Fri, 02 Oct 2009 09:57:16 +0000

Problem: Migrating my good old Debian etch installation to VirtualBox guest I stumbled across a resume script error on boot: resume: could not stat the resume device file Hitting Enter boots normally, ignoring the missing resume image, but it’s a no-go for production use. Solution: The problem occurs when the userspace suspend cannot find the swap partition due to configuration [...]

USRobotics USR9108 serial console access

Karol — Mon, 14 Sep 2009 17:40:23 +0000

I had to debug my USRobotics router recently (a good old USR9108) as it ceased to respond completely to any network traffic. The CFE was working fine (192.168.1.1 could be pinged), so I thought a tftp firmware flash would do the trick, but to no avail (I got timeouts all the time). Accessing the serial [...]