Linux Kernel

Linux Kernel

Understanding use of ABS_MT_TRACKING_ID in Multi-touch Driver

Multitouch tracking ID defines the touch starting and touch end ( one touch session from start to … Read more

Understanding Android Touch Event , onTouchEvent ( Motion Event )

When we just touched the touchscreen and printed the logs in application using “onTouchEvent” it printed following … Read more

How to get Android Display Resolution using adb shell command ?

Display resolution indicates the height and width of the physical display which the android device is using. … Read more

How to identify and change input device location in Android ?

Identify what is the current location of the input device using getvent command as, So, the output … Read more

Identify Input Device Information in Android

To identify the information about the input device connected to Android platform, we can use “getevent” as … Read more

How to force panic Linux kernel intentionally ?

When you are working with Linux kernel internals or device driver programming, there are chances you see … Read more

Settings

Ubuntu doesn’t detect WiFi Access Point

Recently I came across very different problem when I moved to a place where there was few … Read more

Understanding wireless beacon packet ( captured using pcap API’s )

As per Wikipedia, Beacon frame is one of the management frames in IEEE 802.11 based WLANs. It contains all the … Read more

How initrd is mounted by Linux kernel ?

Lets first try to understand what are the ways to mount the root file system, Altough the … Read more

Check Bluetooth services of a remote device

With following mechanism, we can check the Bluetooth profiles and services of a remote device, 1) Switch … Read more

Use hcitool to get Bluetooth device information

Below commands are shown for communication between Linux Laptop and Samsung Mobile to get Mobile bluetooth device … Read more