Hi, I attached a null modem cable to my notebook and I'm seeing garbage as soon as the serial driver is loaded. I tried booting with init=/bin/bash to be sure that it's not some rc script doing strange things to the serial port, but this didn't solve the problem.
This is the relevant part of .config: # # Serial drivers # CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y # CONFIG_SERIAL_8250_CS is not set # CONFIG_SERIAL_8250_ACPI is not set CONFIG_SERIAL_8250_NR_UARTS=4 # CONFIG_SERIAL_8250_EXTENDED is not set I also tried with ACPI discovery (just in case) without success: # # Serial drivers # CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y # CONFIG_SERIAL_8250_CS is not set CONFIG_SERIAL_8250_ACPI=y CONFIG_SERIAL_8250_NR_UARTS=4 CONFIG_SERIAL_8250_EXTENDED=y # CONFIG_SERIAL_8250_MANY_PORTS is not set # CONFIG_SERIAL_8250_SHARE_IRQ is not set CONFIG_SERIAL_8250_DETECT_IRQ=y # CONFIG_SERIAL_8250_MULTIPORT is not set # CONFIG_SERIAL_8250_RSA is not set This is kernel command line: Kernel command line: BOOT_IMAGE=linux-2.6.12rc1 ro root=305 video=sisfb:mode:1024x768x16 console=tty0 console=ttyS0,38400n8 init=/bin/bash And this is where garbage appears: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12 i8042.c: Detected active multiplexing controller, rev 1.1. serio: i8042 AUX0 port at 0x60,0x64 irq 12 serio: i8042 AUX1 port at 0x60,0x64 irq 12 serio: i8042 AUX2 port at 0x60,0x64 irq 12 serio: i8042 AUX3 port at 0x60,0x64 irq 12 serio: i8042 KBD port at 0x60,0x64 irq 1 Serial: 8250/16550 driver $Revision: 1.90 $ 8 ports, IRQ sharing disabled [garbage] Once I get the shell using 'clear' cures the problem. The log (from dmesg) should be: Serial: 8250/16550 driver $Revision: 1.90 $ 8 ports, IRQ sharing disabled ttyS0 at I/O 0x3f8 (irq = 4) is a NS16550A ttyS1 at I/O 0x2f8 (irq = 3) is a NS16550A ttyS0 at I/O 0x3f8 (irq = 4) is a NS16550A This is the first time that I use serial console with the notebook, but I've done this before with other machines and never saw this problem. Googling aroung I found another user with the same problem: http://www.ussg.iu.edu/hypermail/linux/kernel/0503.1/0442.html but no answer :( Any suggestion? Luca -- Home: http://kronoz.cjb.net Un apostolo vedendo Gesu` camminare sulle acque: - Cazzo se e` buono 'sto fumo!!! - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
