krish – 起死回生 [Wake up from death & return to life.]

October 15, 2012

Bangalore trip

Traveled with ChoonMing to Bangalore to take up another PuppetLabs training for OlinData.

Refreshing little break, new place, people with traffic sense, nice weather to sprint and also got treated to awesome lunch at Hotel Samarkand as a farewell for me by Ming.  
Yes guys, I’ve decided to stop consulting and go on full time with my game development (infact already doing it from Oct 1)

Anyway, pics of B’lore trip here .. will keep updating till I return.

ChoonMing and Me – early birds to train future puppet masters… more like more than an two hours early.. yikes!

A view from our conference room

The benefits of being a ‘travelling’ entrepreneur – peace to eyes.

And that looks like me taking a look at attendees puppet code demos’ – a test for them on last day of training.

Who owns a mac and then writes code on a white background text editor … hmmmzz 😐

And that’s it. Sorry guys no more pics of the trip. I forgot my camera in a friend’s bag back here in Hyderabad and Ming’s camera just decided to die on batteries (+ he didn’t get his charger) .. so that’s just few pics from his HTC One X.

Yikes! there is Ratatouille on the Menu .. but didn’t have much confidence in the quality of food after stayin 4 days there.

Apart from all the work, we had good food, and then some days of crappy food at Hotel.
Ming lost some stuff from the room in hotel (which costs like 4000-5000 rupees) and hotel’s Wi-Fi wouldn’t work until he decided to give them a verbal bash and I helped the hotel IT guy with a bit of common sense to change the water dripped Access Point on the floor.

This trip became possible only because a friend decided to watch over my kids (read: my 3 Cavies) and I am very grateful for that.

April 6, 2011

Wi-Fi on HP dm1

Filed under: GNU/Linux — krish @ 8:56 am
Tags: , , , , , , , ,

Alright guys, so I got the HP dm1(AMD Fusion) and cancelled the Lenovo Thinkpad x120e that was ordered in US, for many strong reasons that I’ll blog up later.

The HP dm1 comes with Ralink wi-fi card which most of the current Linux distros do not identify out of the box as of now / end up probing the wrong driver.

This is how to get your wi-fi up on the hp dm1
(as well as other new laptops with Ralink cards; just get the correct driver that matches your card )
Note: This was done on Ubuntu 10.04 – 64bit

1. Update your distro. 10.04 needed update to newer kernel 2.6.30 and headers for drivers to compile
krish@shenron:~$ sudo apt-get upgrade

2. Check the model of your ralink card (Mine shows 539x series which is a Wi-Fi, Bluetooth Combo)
krish@shenron:~$ sudo lspci | grep -i 'network'
02:00.0 Network controller: RaLink Device 539f

3. Go to ralink website http://www.ralinktech.com -> Sofware -> Linux and Download the driver that matches your card version.

4. Unzip the package
krish@shenron:~/Downloads$ unzip 2010_1217_RT5390_LinuxSTA_V2.4.0.4_WiFiBTCombo_DPO.zip

5. Change configuration
krish@shenron:~/Downloads$ cd 2010_1216_RT5390_LinuxSTA_V2.4.0.4_WiFiBTCombo_DPO/os/linux/

krish@shenron:~/Downloads/2010_1216_RT5390_LinuxSTA_V2.4.0.4_WiFiBTCombo_DPO/os/linux$ sed -i 's/HAS_ANTENNA_DIVERSITY_SUPPORT=n/HAS_ANTENNA_DIVERSITY_SUPPORT=y/' config.mk

krish@shenron:~/Downloads/2010_1216_RT5390_LinuxSTA_V2.4.0.4_WiFiBTCombo_DPO/os/linux$ grep ANTENNA_DIVERSITY config.mk
HAS_ANTENNA_DIVERSITY_SUPPORT=y
ifeq ($(HAS_ANTENNA_DIVERSITY_SUPPORT),y)

6. Build
krish@shenron:~/Downloads/2010_1216_RT5390_LinuxSTA_V2.4.0.4_WiFiBTCombo_DPO/os/linux$ cd ../../

krish@shenron:~/Downloads/2010_1216_RT5390_LinuxSTA_V2.4.0.4_WiFiBTCombo_DPO$ sudo make

7. Install if Step 6 was successful with no errors; else start fixing your config again 🙂
krish@shenron:~/Downloads/2010_1216_RT5390_LinuxSTA_V2.4.0.4_WiFiBTCombo_DPO$ sudo make install

8. Make your correct card number to be probed ( Use your card model here, mine is rt5390sta )
krish@shenron:~$ sudo echo "rt5390sta" >> /etc/modules

9. Blacklist wrongly probed ralink drivers – Ubuntu 10.04 probed this bluetooth module
krish@shenron:~$ sudo echo "blacklist rt2800pci" >> /etc/modprobe.d/blacklist.conf

10. Reboot
krish@shenron:~$ sudo shutdown -r now "Yay!"

11. After the machine is up again, check for ra0 interface
krish@shenron:~$ sudo ifconfig ra0 | head -n2
[sudo] password for krish:
ra0 Link encap:Ethernet HWaddr 90:00:4e:1a:76:e6
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0

Wolah, you’re connected and free to move away from the computer table on to the couch for some lazy working style 😉

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