XUbuntu 16.04 Screen Brightness Controls

XUbuntu 16.04 Screen Brightness Controls Not Working

Open the grub file using following command in terminal

sudo nano /etc/default/grub
add acpi_osi=Linux at the end of the following line as below

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" 

TO

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux"

Save the file /etc/default/grub by pressing "Ctrl o"

Exit the file /etc/default/grub by pressing "Ctrl x"

Update the grub using following command

sudo update-grub 

Run the following command to check the graphics card

ls /sys/class/backlight/

it will list something like following

acpi_video0  acpi_video1  intel_backlight  nv_backlight  

if intel_backlight listed, then it is intel graphic card. while nv_backlight is for nvidia

Now create following file by running the mentioned command

sudo nano /usr/share/X11/xorg.conf.d/20-intel.conf

Add following lines as it is

Section "Device"
        Identifier  "card0"
        Driver      "intel"
        Option      "Backlight"  "intel_backlight"
        BusID       "PCI:0:2:0"
EndSection

Save the file by pressing "Ctrl O"

Exit the file by pressing "Ctrl X"

Now reboot the machine by running following command 

reboot

It worked for me...hopefully it will do the task for you as well. 

Cyber Security Management

1. Manage the IT assets

·         Identify the assets in an environment and its life

·         disable/restrict the vendor defaults

·         define the patch cycle for firmware

·         review the assets list regularly

2. Manage the software’s in an environment

·         define a list of authorized software

·         assess the environment for un-authorized software’s and remove it

·         define the patch cycle for authorized software

·         review the authorized software list regularly

3. Secure the access to an environment

·         identify the access points to an environment

·         restrict the access points with appropriate controls (physical, logical)

·         review the access point controls regularly

4. Secure the endpoint

·         document the endpoint configurations

·         restrict the admin privileges at endpoint

·         update/upgrade the endpoint regularly

·         review the endpoint configurations regularly

5. Identify and address critical vulnerabilities

·         assess the environment for vulnerabilities regularly

·         patch the vulnerabilities as per patch cycle

6. Control the use of administrative privileges

·         identify & document the admin access rights

·         limit the admin access rights to the job tasks

·         log the admin activities in detail

·         review the admin activities regularly

7. Conduct the awareness trainings

·         define the relevant awareness material

·         provide the awareness trainings regularly

·         assess the users for awareness

HOW TO GENERATE AND VERIFY MD5 HASH IN WINDOWS & LINUX

HOW TO CHECK THE INTEGRITY OF THE DOWNLOADED IMAGE IN WINDOWS & LINUX

LINUX:
GENERATE THE MD5 HASH BY USING FOLLOWING COMMAND
MD5SUM FILE.ISO > HASH.MD5

CHECK THE MD5 HASH WITH FOLLOWING COMMAND (PLACE VENDOR PROVIDED HASH TO THE SAME LOCATION)
MD5SUM -C HASH.MD5

OR

OPEN BOTH VENDOR PROVIDE AND SELF GENERATED FILES AND MACH THE STRING. IF BOTH THE STRINGS ARE SAME THEN FILE INTEGRITY IS INTACT.

WINDOWS:
DOWNLOAD THE FILE CHECKSUM INTEGRITY VERIFIER (FCIV) UTILITY FROM FOLLOWING LINK
https://support.microsoft.com/en-us/kb/841290

EXTRACT THE UTILITY, OPEN CMD/COMMAND PROMPT AND MOVE TO THE EXTRACTED UTILITY PATH.

RUN FOLLLOWING COMMAND TO COMPUTE THE HASH VALUE OF THE DOWNLOADED IMAGE/FILE.
FCIV -md5 path\filename.iso

OPEN THE VENDOR PROVIDED HASH FILE AND ABOVE COMPUTED HASH FILE AND MATCH THE STRING.

IF STRING MATCHES THEN INTEGRITY IS INTACT.