DL380 G4 serial port problem

[Alexsey Novik]

Hi!

I connect serial modem to serial port of my DL380 G4. After 5-15 minutes of connection, modem hang up and serial port dissapeared from device manager.

I tried to reboot, but nothing changed.
I found solution in powering of and disconnecting power cords from server.
But when i try to connect again, my problem is continued.

Any suggestions? Seems like dead serial controller.
Do i need to change motherboard or this is software issue?

[Oleg Koroz]

What happened if you change COM 1 with COM 2 trough BIOS and use it?

[Alexsey Novik]

The same, nothing is changing
Even if i just turn it off, it is appeared in Device Manager

[Brian_Murdoch · Accepted solution]

Hi Alexsey,

Please also check the the problem is not caused by the ILO CLI function being enabled. This polls the serial port and can cause COM port issues.

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=PSD_ES041112_CW01

I hope this helps,

Brian

[Alexsey Novik]

Thanks a lot, Brian!
This is resolution of my problem