Frequently Asked Questions/Troubleshooting - HP zx2000 Start Here Manual

Frequently Asked Questions/Troubleshooting

• Q. How does the Linux kernel order serial ports (UARTs)?
A. 1. HCDP (Headless Console and Debug Port) Console
UART is the UART set in the EFI Console- In/Out table.
It will always be
system uses a serial console.
2. ACPI Namespace UARTs are the built-in UARTs on
HP Itanium 2-based systems. They are numbered
in order (i.e. 1, 2 or A, B).
Note Port [1|A] may be selected for Console-In/Out, and
would therefore be discovered as
3. PCI UARTs include the serial lines on the management
processor. Ports are numbered as follows:
1. UPS/AUX Port
2. Console Port
3. Modem/Remote Session
regardless of whether the operating
ttyS0
26
.
ttyS0