Do yourself a favour and check out the linux action show at http://www.jupiterbroadcasting.com/
Bryan and Chris talk about all things Linux and I religiously watch every episode. It’s definitely worth your time 
Category: Uncategorized
I’ve signed up to Gravatar and added the plugin to my site, so I now have profile pictures on my accounts…. seems like something so simple, hehe.
I recently had a problem on my HP Pavillion DV4 laptop, where the multimedia buttons and the wifi button stopped working.
I was unable to change the sound volume using the multimedia panel, nor could I enable my wifi/bluetooth.
I came to the conclusion that it must be an ACPI problem, so I attempted to roll back to an older Fedora 12 kernel, which didn’t help at all. I also tried check the gnome keyboard shortcut preferences. They seemed correct and were set to XF<blah> events.
Restarting the acpi service didn’t help either. From what I could tell looking in the logs, no events were being recorded when the multimedia buttons were pressed. However, strangely the function buttons worked. I.E Function+F7 or F8 would increase or decrease the screen brightness and generate a keyboard event.
I then tried to boot the Ubuntu Karmic Koala live cd and found the exact same problem appears in Ubuntu. So therefore it wasn’t a distribution specific issue as it affected both Ubuntu and Fedora.
My solution was to shut down the laptop, disconnect the mains power adaptor, remove the battery, reattach the battery and boot the laptop up. It seems that pulling the battery out fixed the problem!
My worry at the moment is I’m not monitoring the array very often. If something dies, I’d like to know.
I have a homebrew NAS at home which is Fedora based, that has a Raid 5 md disk array.
The easiest solution is to configure the MTA on the box and forward the root mails somewhere where I can read them.
I installed postfix on the Fedora 11 box with a simple yum command
yum install postfix
There after I configured the /etc/postfix/main.cf. I changed these lines….
myhostname = internode.on.net
inet_interfaces = localhost
relayhost = mail.internode.on.net
The internode mailserver does a lookup of you domain before accepting you email, rightfully so.
As I’m not hosting a mailserver, I’m just using it to send a mail out, I set the mailserver hostname to internode.on.net. This simply means that when the internode server checks the domain, it will resolve.
As I don’t want anyone trying to relay through the server, I’ll set it to only accept connections from localhost. The box sits behind my ADSL router, so it’s protected by NAT from internet based attacks, but if one of my Windows PCs gets infected, it’s possible this box could get used to send spam. There is also the possibility that someone hacks the wireless network and uses the unsuspecting mailserver.
Finally, as I don’t want postfix to try and send the email directly to the receipent mailserver (which in my case is google), I set the internod mailserver as my relayhost.
To test this I created a simple text file which I’ll use to send a test email from the command line.
To: you@yourmail.com
Subject: Hello Test
From: internode.on.net
Hello Test
Now run this command:
sendmail.postfix -t < mail.txt
If you check your /var/log/maillog you should see something like:
Nov 7 18:29:27 postfix/cleanup[5961]: 0B6EA2200F: message-id=<20091107075927.0B6EA2200F@internode.on.net>
Nov 7 18:29:27 postfix/qmgr[5894]: 0B6EA2200F: from=<root@internode.on.net>, size=315, nrcpt=1 (queue active)
Nov 7 18:29:27 postfix/smtp[5964]: 0B6EA2200F: to=<.com>, relay=mail.internode.on.net[203.16.214.182]:25, delay=0.98, delays=0.11/0.01/0.69/0.18, dsn=2.0.0, status=sent (250 ok: Message 466760145 accepted)
Nov 7 18:29:27 postfix/qmgr[5894]: 0B6EA2200F: removed
You may be wondering why I’m using the default theme again?
The Recaptcha plugin for wordpress doesn’t seem to work on the previous theme…. which is a bummer.
But Russian spammers are more annoying than a boring theme.
I’ll look at fixing it up when I have time….