Quartus 20.1 Linux modelsim (ase) install broken - Quartus 20.1 Linux modelsim (ase) install broken Has anyone managed to run the license-free version of modelsim that is installed with the 20.1 standard edition on a Linux distribution? My progreess so far: 1) the permissions of modelsim_ase/vco and in modesim_ase/linuxaolm must be fixed 2) modelsim_ase/vco must be edited to search the binaries in linuxaloem, not in linux_x86_64 1)+2) are well-known fixes from VHDL whiz But then vsim fails because it cannot find a modelsim_ase/linuxaloem/../tcl/tcl8.6/init.tcl. - the tcl directory is obviously missing in 20.1. IMHO this is a broken install , because I have a running 19.1 installation and there modesim_ase has a tcl directory - unfortunately tcl8.5 instaead of tcl8.6 Replies: Re: Quartus 20.1 Linux modelsim (ase) install broken Hello Shyan, It was another permissions problem after all. The file tcl.fs (a cache of pre-compiled scripts of some sorts?) et al. must be readable by the users. Best Regards, Peter Replies: Re: Quartus 20.1 Linux modelsim (ase) install broken I would suggest to download and re-install the ModelSim-Intel FPGA Starter Edition. https://fpgasoftware.intel.com/20.1/?edition=standard&platform=linux Please double check that the ModelSim - Intel FPGA Edition Software Requirements are met before installation. Please refer to the Intel® FPGA Software Installation and Licensing: https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/manual/quartus_install.pdf#page=8 Do let us know if the issue still persists.