# Install 32-bit libs
sudo dpkg --add-architecture i386
sudo apt update
sudo apt install libncurses5:i386 libtinfo5:i386 libstdc++6:i386
The Problem (2020.1): If your testbench used packed structs, unions, or complex interface modports, XSIM would frequently crash with Internal Error: xvcs.exe : *** Fatal Error: Segmentation Fault.
The Fix in 2020.2: The SystemVerilog parser and runtime engine saw a major overhaul. Specifically, dynamic array allocation and garbage collection were fixed. In benchmark tests (using UVM 1.2 and AXI VIP), crash frequency dropped by over 70%.
Verdict: PARTIALLY FIXED. While simple SV interfaces now work flawlessly, extremely nested generate blocks with interface arrays can still trigger a rare crash. xilinx vivado 20202 fixed
Not everything can be "fixed." Some things are simply removed or broken by design. Avoid wasting time on:
Below is a concise, actionable checklist for diagnosing and fixing common problems with Vivado 2020.2 on Windows and Linux. # Install 32-bit libs sudo dpkg --add-architecture i386
Before applying fixes, you must identify your specific issue. Below are the top five failures reported in 2020.2.
Go to the Xilinx Download Archive (requires free account): Below is a concise, actionable checklist for diagnosing
Files needed:
Alternative: Use the Vivado Update mechanism from within an already installed 2020.2 base:
# In Vivado Tcl Console
source C:/Xilinx/Vivado/2020.2/.Xilinx/Vivado/2020.2/data/update/update_vivado.tcl
update_vivado -full