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

December 10, 2013

How to uninstall Intel XDK from Linux!

Filed under: Free / Open Source,GNU/Linux — krish @ 12:54 pm
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This differs depending on the distro you use.

I was on Ubuntu 12.04 LTS, and had installed Intel XDK earlier for a game development; decided to do away with it.

So here it goes

STEP1: Launch javaws viewer and remove the xdk

Use javaws to remove the XDK

Use javaws to remove the XDK

STEP2: Find the cache location and Remove Cached xdk files

Find the cache location and delete cached xdk jnlp

Find the cache location and delete cached xdk jnlp

STEP3: Happily do away with the shorcut

Bye bye shortcut. Neaten up your desktop a bit :)

Bye bye shortcut.
Neaten up your desktop a bit 🙂

February 26, 2013

Ubuntu 12.04 with AMD HD6810 Radeon

Filed under: GNU/Linux — krish @ 7:16 pm
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I had been using the fglrx drivers with my AMD HD-6810 radeon card since I changed the OS (from default shipping Windows 7 to Ubuntu 12.04) on my HP dm1z 3014AU (now that’s about 2 yrs next month)

AMD command control center (amdcccle?) was controlling the settings and I had done some changes, it was all okay but when I ran my 1080 videos from ‘GoPro Hero2 Motorsports Edition’ .. they’d tear and lag (so did my 720p vlogs sometimes)

My laptop’s color temperature was quite different from my LED monitors (which I use for my game artwork), or even my tablet.
So the game would look a bit different in color saturation’s on my laptop.
Strangely, Ubuntu’s sysinfo for the driver showed VESA, but xorg.conf showed AMD and amdcccle was also able to make on the fly changes.
It was evident that I had both the drivers, and some apps were not looking at the right place (especially while reporting).

Anyway, out of hunch I decided to drop the fglrx drivers and use the radeon only (which wasnt so stable for the card/ubuntu version back then)..

Did this:

$ sudo apt-get remove –purge fglrx fglRx_* fglrx-amdcccle* fglrx-dev* xorg-driver-fglrx
$ sudo apt-get install –reinstall xserver-xorg-video-ati xserver-xorg-video-radeon
$ sudo reboot


My Laptop Screen right now :)

My Laptop Screen right now 🙂

And after reboot, the color temp is quite cooler (although my laptop fan runs a bit more now),  my vlog 720p videos play without tear,  Audio of my ‘Altec Lansing’ speakers doesnt ‘tear’ on high volume (surprise!)  and  Ubuntu sysinfo shows “Gallium 0.4 on AMD PALM”  which according to this ( is the correct modesetting for HD6810 card 🙂

Let’s hope it works across VMs now 🙂

Have fun trying if you have the same/similar card (Disclaimer: I’m not responsible though :P)


November 13, 2011

Bluetooth on HP dm1

Filed under: GNU/Linux — krish @ 3:23 am
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So the left speaker on my hp dm1 gave up today and was putting out more ‘noise’ than any music.
I’m gonna call their service center tomorrow and see if they can do anything about it without asking me to take backup of my huge data or trying to install Windows on this machine.

Meanwhile, one more device not functioning properly didn’t feel nice (the other device is bluetooth).
I never got to use bluetooth on my laptop.
Pre-installed windows7 was removed in a jiffy from this machine and it ran Ubuntu 10.04 LTS since then.

At first, my Wi-fi had issues with Ubuntu, which I fixed and blogged here –
Now, speakers screwed up.. which I can’t fix.

So, its 3:00 am and I’m pretty much supposed to be in bed-rest (been like that since last 5 days.. with temperature, asthma issues).. anyway let’s get to fixing this!

List my hardware
krish@shenron:~$ sudo hciconfig -a
hci0: Type: USB
BD Address: 88:9F:FA:AC:50:3E ACL MTU: 310:10 SCO MTU: 64:8

Yikes! Something is wrong here. I think I must have tried to do some hack earlier on and left it mid-way.

Let’s fix that first.
krish@shenron:~$ dpkg -l | grep bluez
ii bluez 4.60-0ubuntu8 Bluetooth tools and daemons
ii bluez-alsa 4.60-0ubuntu8 Bluetooth audio support
ii bluez-gstreamer 4.60-0ubuntu8 Bluetooth GStreamer support
ii bluez-cups 4.60-0ubuntu8 Bluetooth printer driver for CUPS

Why do I need cups support package? I do not. Kicked out.
krish@shenron:~$ sudo apt-get purge bluez-cups
And now re-install stuff that matters
sudo apt-get install --reinstall bluez

Okay now, list hardware again:

krish@shenron:~$ sudo hciconfig -a
hci0: Type: USB
BD Address: 88:9F:FA:AC:50:3E ACL MTU: 310:10 SCO MTU: 64:8
RX bytes:45505 acl:143 sco:0 events:183 errors:0
TX bytes:3971 acl:84 sco:0 commands:54 errors:0
Features: 0xff 0xff 0x8f 0xfe 0x9b 0xff 0x59 0x87
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3

Looks better!

Start the applet
krish@shenron:~$ bluetooth-applet&

Cool, it came up on my panel. Clicked on it. Clicked “Turn On Bluetooth”
Picked up my phone, search for devices and Nothing!
Sigh! Didn’t work…

Now, some googling, reading some bugs on launchpad, some forums, some debian lists and figured out that the bluetooth device is categorized as Cambridge Silicon Radio devices (CSR).

Sweet, but this looks like a dead end…

Too tired. 🙂 Will work this out tomorrow morning

Back on the box. It’s post noon now 🙂

Okay! Read a bit about bluetooth sniffing, a little on ralink AND found that the radio link on bluetooth stays OFF!
So someone had tried setting a PS value with bccmd. So let’s try:

krish@shenron:~$ sudo bccmd psset -s 0x0000 0x028c 0x0001

Ok, now kill and restart the applet

krish@shenron:~$ ps aux | grep bluetooth | grep -v grep | awk '{print $2}' | xargs kill; bluetooth-applet&
[1] 3539

Checking bluetooth again…
Doesn’t work. Crap!

Hmm, may be I’m not loading some module properly.
Let’s reboot and try…

Alright, after reboot start applet again if its not running already
krish@shenron:~$ sudo bluetooth-applet&

Turned ON Bluetooth. Aha! the applet shows active! Nice..

Check processes
krish@shenron:~$ ps aux | grep bluetooth | grep -v grep
root 792 0.0 0.0 0 0 ? S 15:24 0:00 [bluetooth]
root 1438 0.0 0.0 27428 2096 ? S<s 15:24 0:00 /usr/sbin/bluetoothd --udev
krish 2187 0.0 0.1 166708 8256 pts/0 S+ 15:37 0:00 bluetooth-applet

After a bit of thinking, I realized my mistake.
Last time I had killed bluetoothd process along with the applet.

OKAY! Now time to test…
Make your way through the applet options to Send and Receive files (I am not writing a how to on it :D)

Added New Device.



You might want to change your “Friendly Name” to something really friendly.
It shows CSR by default. Remember why CSR? 🙂

Friendly Name - Bluetooth Preferences

I’ve changed it to match the name of my laptop. ( That’s right, all my devices have names )

Now the question remains – Will this stay after reboot?
I am yet to find out.
If it doesn’t, I think I know what has to be done.

Not rebooting the machine now though.. 🙂 .. Time for some work 😀

Oh BTW, did I mention that your Bluetooth will now “Turn ON” / “Turn OFF” with the same Wi-Fi HotKey!  :X

September 4, 2011

Stop MySQL from auto starting in Ubuntu

Filed under: GNU/Linux — krish @ 12:44 am
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That’s right.

If you’ve tried using update-rc.d and sysv-rc-conf and STILL see mysql process starting up!

krish@shenron:~$ ls -ltr /etc/rc?.d | grep mysql
krish@shenron:~$ ps aux | grep mysql | grep -v grep
mysql     1172  0.0  1.1 177888 18996 ?        Ssl  Sep03   0:01 /usr/sbin/mysqld
krish@shenron:~$ WTF!!!

Here’s where it matters and how to stop mysql from auto starting:

krish@shenron:~$ grep -A3 "start on" /etc/init/mysql.conf
start on (net-device-up
          and local-filesystems
	  and runlevel [2345])
stop on runlevel [016]

Just comment out the 3 lines for “start on” to make it

krish@shenron:~$ grep -A3 "start on" /etc/init/mysql.conf
#start on (net-device-up
#          and local-filesystems
#          and runlevel [2345])
stop on runlevel [016]

Reboot and check:

krish@shenron:~$ sudo init 6

April 6, 2011

Wi-Fi on HP dm1

Filed under: GNU/Linux — krish @ 8:56 am
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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 -> Sofware -> Linux and Download the driver that matches your card version.

4. Unzip the package
krish@shenron:~/Downloads$ unzip

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/'

krish@shenron:~/Downloads/2010_1216_RT5390_LinuxSTA_V2.4.0.4_WiFiBTCombo_DPO/os/linux$ grep ANTENNA_DIVERSITY

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: Bcast: Mask:

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

December 24, 2010

Poking DELL

Filed under: Free / Open Source — krish @ 1:24 am
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Just trying to poke Dell here, and see if this works 🙂


Need m101z minus Windows!

Update 24 Dec: Got a wake up call from DELL today, probably to understand this and take the suggestion to higher management.
Fingers crossed! ……… ok now uncrossed I gotta work. 🙂

Update 21 Jan:

Still waiting for News on this:

I am not paying for the OS I don't want!


Reminds me of

November 11, 2010

BSNL deserves a Standing Ovation

Filed under: GNU/Linux — krish @ 11:35 am
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Talk of the latest thing, BSNL’s 3G USB Modems come with deb package for Linux installation and it was just a one-click install and I was on 3G network.
We have all seen other providers of usb modems stumble, frown and sweat to even say that they could support it for Linux.

Looks like BSNL is really aware of the rapidly growing Linux users and has taken steps to ensure they aren’t missed out.

I was expecting to do at least an hour of hacking to get this to work …. thanks to BSNL and Teracom, it took just under a minute.

BSNL's 3G USB modem - deb package

They also had a section on their user manual for Ubuntu; with a small error 🙂

Section for Linux Users - Bsnl 3G USB modem Manual

You no longer need to run in circles around your Network Manager for setting up the BSNL’s Internet.. Welcome the Dock 🙂

Bsnl 3G Dock on Ubuntu Linux - Look ma! no Network Manager or Editing Conf Files 🙂

And finally the Reliability that counts!

Bsnl delivers promised Bandwidth!

While most of us know that interacting with BSNL’s Customer Service Center / Accounts is almost like interacting a with a redtaped Govt department, but how many of us have acknowledged the technological heights that BSNL has achieved?

Skipping any marketing terms here, for most end users – BSNL’s Broadband Internet service availability has been awesome ( yes, they take lot of time to give a new connection / shift a connection ) , but once you’re wired in… there is hardly a downtime due to technology.

They are also very reliable ( 2Mbps means atleast 1.9Mbps ), unlike other providers who fail to comply with 80% of promised bandwidth.

BSNL and Teracom, both deserve a Standing ovation from the Linux users 🙂

P.S: I happened to buy this card from probably the most well-mannered and customer pleasing employee of BSNL service desks at Customer Service Center – Lakdi-ka-Pool. I do not know the name, but will definitely update this blog the next time I visit the bsnl-csc.

Update: A.K Sinha, SDE-Mobile, Nagpur deserves a super claps here. My Data Card was not working after coming to Nagpur since 3 days. He solved it within 30 minutes. Super Awesome!

September 2, 2010

Ubuntu hangs on me :(

Filed under: GNU/Linux — krish @ 3:45 am
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Was an embarrassing situation when my laptop got hung amid a client call.
It was hung well over 20 minutes.. tried to kill VirtualBox in many ways. No Avail. It just took over the whole mem and cpu power…forced chromium to die.. as I watched helplessly over my console.

VirtualBox kills my CPU usage

Damn.. I miss Suse’s AppArmor, RedHat’s selinux and Mandriva’s MSec

Ubuntu needs something natively developed.

December 26, 2008

Dell’s annoying ad!

Filed under: Uncategorized — krish @ 10:45 pm
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Dell considers Windows an upgrade over GNU/Linux?

Dell considers Windows an upgrade over GNU/Linux?

Do you agree that Windows is an “upgrade” over GNU/Linux?

May 16, 2008

hard time with hardy

Filed under: GNU/Linux — krish @ 12:46 pm
Tags: ,

My new lappie rested in its bag for some days. I had no time to use it and may be I was even waiting for my opensolaris shipment to arrive. It was my third attempt to get free opensolaris shipment from SUN. Hoping atleast the third one would come.

I tried downloading from the website, but the download breaks. One of ilughyd members, theju tried from torrent, I guess he got a bad checksum. So, all in all last, trust was on SUN to grant me an opensolaris DVD.

The wait was getting longer each day and one fine day ubuntu released 8.04 LTS version. This tempted me to try out the distro and still keep waiting for opensolaris. ubuntu studio seemed a good deal to try out. The download was another long wait. 😦
After install affects:
1. Atheros wi-fi device was not detected.
2. Low quality sound.

Sound could be taken care of later, but lappie is really not mobile until I can go wireless. Limited by time, I left it in that state for few more days. The day I got back to it, I tried using the restricted drivers and madwifi.
Then I tried ndiswrapper deb package and used winXP drivers; no avail.
I was suggested to try compiling ndiswrapper from source rather than using packaed deb, at ‘The GNU/Linux Group
That attempt ended in CFLAGS error. Checked around in the internet to find lots of reports on CFLAG errors from various people trying to compile apps from source. Most of them are related to kernel 2.6.24

I was lost in thoughts on what can be done and lo – my opensolaris shipment arrived(release 1/08). Eager to get it run, I tried installing and ended up with bad/non-existing X server on the disk. I couldn’t get into GUI installation and I didnt want to spend time doing command installation and then patch my X.

It is not my natural self to upgrade / install new releases – Long lost habit. I wait for a month or two after the release and upgrade/install, only if necessary. Running low on time, I decided to pull debian4.0/kubuntu7.10 from my CD pack and get done with distro installation.
Atheros didnt work by default in it as well, but then ndiswrapper 1.51 did the job to an almost ok level. I say so because my wi-fi switch doesn’t blink, though I am able to connect to internet and it also works as toggle to switch on/off.
I’ll save the lights thingy for some other time. Got loads of other things to address on priority.

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