Monthly Archives: July 2009

How to set the RTC max_user_freq in newer kernels

I found out today how to set the real time clock max frequencies in Ubuntu since they removed the possibility to do it from sysutil.conf from newer kernels. Add the following to your /etc/rc.local or another startup script:

echo 2048 >/sys/class/rtc/rtc0/max_user_freq
echo 2048 >/proc/sys/dev/hpet/max-user-freq

Reboot, and you should get better performance from things like mplayer.


DDWRT WPA2 AES Repeater Bridge Setup

I found this awesome video today that explains step by step how to make a repeater for any wireless router using DDWRT! I’m currently doing it with WPA2/AES to boot!

After everything seemed to be working, I made sure by running a quick scan with my wireless card on my laptop. Sure enough, there’s now 2 different routers with the same SSID, and connecting to either one yields the same results.


eth1      Scan completed :
          Cell 01 - Address: 00:1F:90:CA:F7:84
                    ESSID:"KB3RXM"
                    Mode:Master
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=81/100  Signal level:-53 dBm  Noise level=-61 dBm
                    Encryption key:on
--
          Cell 04 - Address: 00:1A:70:75:E7:E6
                    ESSID:"KB3RXM"
                    Mode:Master
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=98/100  Signal level:-25 dBm  Noise level=-61 dBm
                    Encryption key:on

So, I want to thank daovertaker for his great tutorial. Now maybe I can get better reception in the back yard!