Category Archives: tech tips

Creating a usb recovery image for a netbook using dd

Yesterday I got my new shiny Acer aspire one 722 netbook, it comes with windows 7 starter and I’m not going to stick with it for long but before I start with my experiments I thought of creating a recovery image for it. Having one is particularly useful if things go wrong and you want to use Acer’s warranty, trust me it’s a pain in the rear to explain to the customer support that you use linux or another operating system. Fortunately acer ships with Acer E Recovery Management which is an excellent utility to create a startup disk. I used my USB drive to create a restore disk and also to store my drivers. The only problem is that it took a total of about 12GB out of the 16GB available on my USB drive. I keep using the pendrive for other things too so this couldn’t be a permanent solution. Continue reading Creating a usb recovery image for a netbook using dd

MTS Settings for Ubuntu 12.04

I switched to ubuntu after the new LTS release and was having some problems with my MTS Mblaze connection. Sometime’s it’d work and sometimes it wouldn’t. There seems to be a bug in modem-manager which constantly keeps crashing so I decided to use wvdial instead. We need to install the wvdial package

sudo apt-get install wvdial

and then create the file /etc/wvdial.conf

[Dialer mts]
Stupid Mode = 1 
Inherits = Modem0 
Password = mts 
Username = internet@internet.mtsindia.in 
Phone = #777 
[Modem0] 
Init1 = ATZ 
SetVolume = 0 
Modem = /dev/ttyUSB0 
Baud = 115200 
FlowControl = Hardware (CRTSCTS) 
Dial Command = ATDT 

Then we can connect to the internet using

sudo wvdial mts

This is the output that I get when the dialer is run. Occasionally it will have some problems you can just disconnect and try again.

--> WvDial: Internet dialer version 1.61 
--> Initializing modem. 
--> Sending: ATZ OK 
--> Modem initialized. 
--> Sending: ATDT#777 
--> Waiting for carrier. ATDT#777 CONNECT 3100000 
--> Carrier detected.  Starting PPP immediately. 
--> Starting pppd at Sun May  6 18:35:05 2012 
--> Pid of pppd: 7231 
--> Using interface ppp0 
--> local  IP address 116.202.159.156 
--> remote IP address 10.228.138.131 
--> primary   DNS address 10.228.129.114 
--> secondary DNS address 10.228.129.113