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Hi Guys, I was wondering in ngspice is there any way we can set the uncomputable node voltage to zero by default. I have done the same by using .IC and finding the problematic nodes however it seems quite cumbersome in larger schematics. Any ideas would help

Why do you have uncountable nodes is the bigger question. Never encountered a situation this was needed.

I have some transistor gate voltages that depend on the previous blocks. Because of this it fails in finding the DC point

tran time_step finish_time uic will do it.

If you don't set the initial conditions, all nodes will be 0 V, using uic.

I did try uic I was still getting the gmin error 

Try to set a lower gmin, maybe it will work. .option gmin=1e-9