Sunday, January 25, 2009

Handy Networking Commands For Ubuntu

I use mii-tool or ethtool command to make sure my Ethernet interface is talking at GigE speed. I use the iwconfig command to check my wireless reception on my laptop.

>sudo mii-tool -v



eth1: negotiated 1000baseT-HD flow-control, link ok
product info: vendor 00:07:32, model 17 rev 0
basic mode: autonegotiation enabled
basic status: autonegotiation complete, link ok
capabilities: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
advertising: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
link partner: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control


>sudo ethtool eth2



Settings for eth2:
Supported ports: [ FIBRE ]
Supported link modes: 1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: Not reported
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: FIBRE
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000033 (51)
Link detected: yes



>iwconfig



eth1 IEEE 802.11g ESSID:"SomeNameGoesHere"
Mode:Managed Frequency:2.437 GHz Access Point: FF:FF:FF:FF:FF:FF
Bit Rate:54 Mb/s Tx-Power=20 dBm Sensitivity=8/0
Retry limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=83/100 Signal level=-47 dBm Noise level=-86 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:1



Sunday, January 11, 2009

Condensed Viewing Of NFL Games Using MythTV

Using MythTV's 30 second skip ahead feature I watched the Eagles vs. Giants game in about 35 minutes. Depending on the NFL quarterback there are 30 seconds between plays, usually. Watching TV ain't just for couch potatoes. MythTV rocks and especially on Ubuntu.


Home Network 2.0

I've revamped my home Ethernet network. Why? Because I recently installed MythTV on top of Ubuntu 8.10 and it exposed a new need for speed. Streaming HDTV requires more bandwith from my home network. I bought a couple of Ethernet switches capable of gigabit Ethernet. Installed one in my computer room where my MythTV server is located. My server has a gigabit Ethernet card. I ran a Cat5e cable from my computer room to my living room where I installed the other switch. I connected my PS3, Apple TV, and Tivo to this switch. The PS3 has gigabit Ethernet. I don't think Apple TV nor Tivo has gigE but at least the switches, PS3 and my MythTV server are talking at gigE speeds. I moved my wireless router from the computer room which is located at the end of the house to the living room which is in the middle of the house. Now I get much better wireless reception in more locations. Streaming HD video works great on my laptop over wireless. The newly wired PS3 also works much better as a MythTV media consumer. Up next: Build MythTV frontends for the living room and bedroom. With spousal approval we'll kiss Tivo goodbye.




Thursday, January 1, 2009

MythTV iPod Touch Remote


MyMote is a free iPod Touch application that you can use as a MythTV remote control. Check out the slideshow on YouTube.