Lines Matching +full:serial +full:- +full:output

2 Serial Devices
5 Serial Device Naming
8     As of 2.6.10, serial devices on ia64 are named based on the
16 	- Firmware on some machines (mostly from HP) provides an HCDP
18 	  as a serial console.  If the user specified "console=ttyS0"
23 	- If there was no HCDP, we assumed there were UARTs at the
34     For example, an HP rx1600 with a single built-in serial port
39       Type        MMIO           pre-2.6.10      pre-2.6.10     2.6.10+
56     table[1] does tell the kernel where potential serial console
63 	- If your firmware supplies the HCDP, it is simplest to
69 	  to specify "console=ttyS0" to get a serial console.)
71 	- Without an HCDP, Linux defaults to a VGA console unless you
74     NOTE: Don't assume that a serial console device will be /dev/ttyS0.
79 Early Serial Console
82     The kernel can't start using a serial console until it knows where
84     all the serial devices, which can happen a minute or more after the
93 Troubleshooting Serial Console Problems
96     No kernel output after elilo prints "Uncompressing Linux... done":
98 	- You specified "console=ttyS0" but Linux changed the device
102 	- The EFI console path contains both a VGA device and a UART.
106 	- Multiple UARTs selected as EFI console devices.  EFI and
111 	- You're connected to an HP MP port[2] but have a non-MP UART
114 	  Either move the console cable to the non-MP UART, or change
118     start of kernel output:
120 	- No early console because you used "console=ttyS<n>".  Remove
123 	- If you don't have an HCDP, the kernel doesn't know where
124 	  your console lives until the driver discovers serial
128     Kernel and init script output works fine, but no "login:" prompt:
130 	- Add getty entry to /etc/inittab for console tty.  Look for
136 	- Add entry to /etc/securetty for console tty.
138     No ACPI serial devices found in 2.6.17 or later:
140 	- Turn on CONFIG_PNP and CONFIG_PNPACPI.  Prior to 2.6.17, ACPI
141 	  serial devices were discovered by 8250_acpi.  In 2.6.17,
157     The external connection is usually a 25-pin connector, and a
158     special dongle converts that to three 9-pin connectors, one of