You've been drinking more?
Seriously, probably a sensor, but could also be a small run in the toilet.
To install a toilet in the basement, you will need to first determine the location for the toilet and ensure there is proper plumbing access. Next, you will need to install a sewage ejector pump if the basement is below the level of the main sewer line. Then, connect the toilet to the sewage ejector pump and the main plumbing system. Finally, secure the toilet in place and test for proper functionality. It is recommended to consult a professional plumber for assistance with this installation.
there is a foreign object caught (cell phone ,kid toy,tp holder ,etc,etc)
your dads
Normally 3" BUT if your using a sewerage ejector you can go with a 2" grinder pump if properly vented
Gravity
on average of average people it would be 4.5 flushes per day (poor toilet)
My g/f has this happen to her regularly and, it was only when I asked that she said she usually flushes once to get the flush working and then immediately after to make certain the toilet flushes everything away. She said that if a toilet has good pressure, it will often splash out when she flushes.
To ensure your toilet flushes properly, you can regularly clean the toilet bowl and tank, check and adjust the water level in the tank, make sure the flapper is sealing properly, and avoid flushing items that can clog the toilet.
The noise from pipes when a toilet flushes is caused by the sudden rush of water through the pipes, creating vibrations and echoes that produce the sound.
Bubbles in your toilet when it flushes could be caused by a clog in the plumbing vent, a blockage in the drain pipe, or a malfunctioning toilet tank component. It is recommended to have a plumber inspect and diagnose the issue for proper resolution.
Many toliets are designed to save water so for some "jobs" it takes two flushes.
No less then 3" unless your using a sewerage ejector