സെന്റ്. ജോൺസ് ഹയർ സെക്കന്ററി സ്കൂൾ, മറ്റം/ലിറ്റിൽകൈറ്റ്സ്/Ubuntu Tips

Network Problem in Ubuntu

Some of the latest Laptops especially Dell Inspiron 5420 and Lenovo G580 series comes with Atheros Network driver which has some problem with Ubuntu 12.04. The problem is that it will not detect the wired network connection(eth0) even though wireless connection is working fine. We can solve this issue by installing the proper network driver. First you have to download the latest driver from here http://linuxwireless.org/download/compat-wireless-2.6/ Open Terminal (Alt+Ctrl+T) and extract the downloaded file using following command.
tar -xvf compat-wireless-2012-07-03-p.tar.bz2
Copy and paste the following commands one by one to change the working directory and install the driver
cd compat-wireless-2012-07-03-p
scripts/driver-select alx
make
sudo make install
sudo modprobe alx

Wired connection not working, ubuntu 14.04

Assuming you are using the default Network Manager program, delete everything in the /etc/network/interfaces file leaving only the two default lines 

auto lo iface lo inet loopback

You can convert from GPT to MBR and MBR to GPT without data loss (I have tried that) with gdisk in linux.

   Use at your own risk

Run command gdisk /dev/sdx with sdx as per your HDD partition

GPT fdisk (gdisk) version 1.0.1

Partition table scan: MBR: MBR only BSD: not present APM: not present GPT: not present

Found invalid GPT and valid MBR; converting MBR to GPT format. THIS OPERATION IS POTENTIALLY DESTRUCTIVE! Exit by typing 'q' if you don't want to convert your MBR partitions to GPT format!

Command (? for help):

MBR to GPT

Enter w to write GPT partition on disk.

Press y to confirm your choice. GPT to MBR

Enter r to enter in recovery and transformation options.

Enter g to convert GPT to MBR partition. For Information

You can check table by command p.

   Warning: You will lost your boot loader (Ex. GRUB)

You can check if your partition is GPT or MBR now gdisk /dev/sdx with sdx as per your HDD partition in Partition table scan

Fix ‘No WiFi Adapter Found’ for HP Laptops with Ubuntu 18.04

1. Reboot and go to BIOS to make sure wireless network are enabled. And plug laptop into a wired connection. 2. Open terminal either via Ctrl+Alt+T for ‘terminal’ 3.1 You may first install the building tools first via command:

sudo apt-get install linux-headers-$(uname -r) build-essential git

3.2 Run command to get the newest Realtek rtlwifi codes that includes rtl8192ce, rtl8192cu, rtl8192se, rtl8192de, rtl8188ee, rtl8192ee, rtl8723ae, rtl8723be, and rtl8821ae.:

git clone https://github.com/lwfinger/rtlwifi_new.git

And then check out extended branch for rtl8822be or rtl8723de:

cd rtlwifi_new/ && git checkout origin/extended -b extended 4. In this terminal window, install the drivers via command:

sudo make install

Type your password (no asterisks feedback) when it prompts and hit Enter. 5. If the installation success, run 2 commands load the new driver:

sudo modprobe -r rtl8723de

sudo modprobe rtl8723de

പിഡിഎഫ് ഫയലുകൾ ചുരുക്കാൻ

പിഡിഎഫ് ഫയലുകൾ ചുരുക്കാൻ
ഗോസ്റ്റ് സ്ക്രിപ്റ്റ് ഇൻസ്റ്റാൾ ചെയ്യാൻ ടെർമിനലിൽ
sudo apt-get install ghostscript ഇൻസ്റ്റാൾ ചെയ്ത ശേഷം ടെർമിനലിൽ

gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf

input.pdf എന്നത് ചുരുക്കപ്പെടേണ്ട ഫയൽ
output.pdf എന്നത് ചുരുക്കി പുതിയതായി നിർമ്മിക്കപ്പെടേണ്ട ഫയലിന്റെ നാമമായി വരേണ്ടത്

MBR to GPT

You can convert from GPT to MBR and MBR to GPT without data loss (I have tried that) with gdisk in linux.

   Use at your own risk

Run command gdisk /dev/sdx with sdx as per your HDD partition

GPT fdisk (gdisk) version 1.0.1

Partition table scan: MBR: MBR only BSD: not present APM: not present GPT: not present

Found invalid GPT and valid MBR; converting MBR to GPT format. THIS OPERATION IS POTENTIALLY DESTRUCTIVE! Exit by typing 'q' if you don't want to convert your MBR partitions to GPT format!

Command (? for help):

MBR to GPT

Enter w to write GPT partition on disk.

Press y to confirm your choice. GPT to MBR

Enter r to enter in recovery and transformation options.

Enter g to convert GPT to MBR partition. For Information

You can check table by command p.

   Warning: You will lost your boot loader (Ex. GRUB)

You can check if your partition is GPT or MBR now gdisk /dev/sdx with sdx as per your HDD partition in Partition table scan