I just finished posting a new article about migrating a django application database from MySQL to PostgreSQL. This article is very technical and only covers the actual migration steps (i.e. does not explain why I made the move). Check it out if you are interested or curious.Read more
I just finished upgrading my laptop to Ubuntu 9.10 (Karmic Koala). After the upgrade finished I noticed that for my wireless card the Network Manger applet in gnome claimed “device not managed.” A quick search revealed that this had happened in the past. I had to set managed=true in /etc/NetworkManager/nm-system-settings.conf. Doing this again and restarting the network service didn’t seem to fix the issue. After a few minutes of looking around in /etc/init.d I saw another service (network-manager!) that needed to be restarted. In summary is here is what you need to do.
Specifically change the 'managed’ under ifupdown…
You can always restart the computer, but where is the fun in that :) To get things to work without restarting, run the following commands.
sudo /etc/init.d/network-manager restart sudo /etc/init.d/networking restart
My apologies for not posting this sooner. Somehow I overlooked an email with sample and demo for How to Set ListView Column Header Sort Icons in C# article that John Moreno had emailed me a long time ago. Anyways, it is online now, check it out.Read more
My new OCZ Rally2 8GB Dual Channel Flash Drive showed up today. It is a dual channel drive and I wanted to see what speeds it would give me. So, here a few numbers that I got from two of my computers.
|Laptop, one 1.11GB file||9.11MB/sec||30MB/sec|
|Desktop, one 1.11GB file||7.67MB/sec||35MB/sec|
|Desktop, multiple smaller files (138MB total)||2.59MB/sec||35MB/sec|
My older USB flash drive gives me 4.50MB/second write speed and 21.68MB/second read speed. An even older one does around 6.81MB/second (!!) read with 4.85MB/second write. So, for reading the dual channel drive might be worth the extra price.Read more
2009-11-03, update: GeoHot released the unlock for baseband 05.11.07! Check it out.
Recently a friend purchased an iPhone off of craigslist that he wanted to unlock for use with a different carrier. The phone was running iPhone OS 3.1, which the dev team has released a jailbreak for. Unfortunately, what he didn’t know was that the boot loader (or bootloader) version mattered a lot :)
He wanted a good, clean unit, and this was a newly refurbished one, jailbroken, very clean, no scratches, and 0 minute usage. He thought all he had to do was install ultrasn0w and he would be good to go. Well, he tried, but no luck. After a few tries he brought it to me and I started my research. Apparently, because it is a newly refurbished unit, it had the latest version of everything: iPhone 3.1 (seller might have upgraded it), latest baseband, and latest boot loader. Here is what my research turned up.
If you are buying an iPhone for use with a carrier other than AT&T then make sure that your device can be unlocked. Also, be careful once you do get the new, compatible iPhone because upgrading to iPhone OS 3.1 using the official ipsw will upgrade the baseband! and possibly the boot loader; you will be stuck without an unlock! (Hopefully you are not reading this post after the fact :|)
The easiest way to check the boot loader and baseband versions is to install Fuzzyband using Cydia. Do this before the purchase. You want a boot loader that is 05.08 or older, and a baseband that is 05.11.07 or older (if it is 05.11.07 then you will have to downgrade to an older version, which is possible assuming that the boot loader version is correct).
Basically, you need an AT&T subscriber :) Here are a few (realistic!) possibilities.
In case if you haven’t seen it yet, Palm released the webOS 1.2 earlier today. For a complete list of changes checkout the official Palm blog post or the PreCentral post (official list of changes from the support site). Here are a few things that I am looking forward to (as I wait for Pre to upgrade) :)
Below is one that I am not so sure about.
Let’s see how it turns out :)Read more
I have been excited about Windows 7 because it overcomes many of the issues with Windows Vista and has many other improvements. It certainly feels (and is) faster than Windows Vista, but generally you can’t see the improvements unless you use it on the exact same computer with similar programs/drivers installed. I installed Windows 7 on both my computers a few days after it was released on MSDN, but didn’t measure the improvements because I was already convinced :) Today I decided to upgrade my brother’s HP Pavilion dv6 to Windows 7, but this time I decided to take a few measurements to see the difference. So, let’s take a look at the results.Read more