VMWARE ESXI 6.7 problem with serial port

[atlantidee]

Hello,

we have a DELL server with installed VMWARE ESXI 6.7 and a virtual machine with Windows 10 Pro. We have connected a modem to the serial port of the server and in the "virtual hardware" of the virtual machine on "serial port 1" we setted "use physical port". After few commands sended to the modem it will no longer be reachable and the port com1 result that is occupied until the restart of the virtual machine. Are there any options to set on the host or on the virtual machine to fix this?

Regards,

Andrea

[Jaydo]

I'm having this same issue and can't figure out what's going on.. Was this ever solved?

[edozio]

Hello,

I'm having the same issue, does anyone having a solution?

with lspci I can see there is a Serial card, is on PCI express, the passthrough is enable and assigned to the VM (debian 10) to serial port, from /dev/char/seria/uart0 and uart1

running the VM the OS find the ports declared as ttyS0 and ttyS1 but nothing happens when opening with minicom

thanks for any help