Garbage on SOL console (PE1950/lenny)

[guigui guigui]

Hello,

I have set up SOL on some PE1950/Debian lenny (BMC, not DRAC), it
works ok, I can access the serial console remotely via ipmitool.

Problem is that when I'm not connected to the SOL console,  it often
gets garbage characters which are logged as a failed login attempt

Auth.log is full of lines such as :
pam_unix(login:auth): authentication failure; logname=LOGIN uid=0
euid=0 tty=ttyS1 ruser= rhost=
FAILED LOGIN (3) on 'ttyS1' FOR `UNKNOWN', User not known to the
underlying authentication module

My config is :

### BMC / Bios

#omreport chassis bmc config=serial
Serial Port Configuration

Serial Port Configuration
Attribute : Connection Mode Setting
Value     : Direct connect Terminal mode

Attribute : Baud Rate
Value     : 57.6 kbps

Attribute : Flow Control
Value     : RTS/CTS


#omreport chassis bmc config=serialoverlan
Serial Over LAN Configuration

Serial Over LAN Configuration
Attribute : Enable Serial Over LAN
Value     : true

Attribute : Baud Rate
Value     : 57.6 kbps



#omreport chassis biossetup

..
..
..

Serial Communications
Attribute : Serial Communications
Setting   : On with Console Redirection via COM2

Attribute : Console Redirection After Boot
Setting   : Enabled

Attribute : External Serial Connector
Setting   : Com1

Attribute : Console Redirection Failsafe BAUD Rate
Setting   : 57600



### GRUB config ###

/boot/vmlinuz-2.6.26-1-amd64 root=/dev/sda1 ro text console=ttyS1,57600

Inittab :
T1:23:respawn:/sbin/getty -L ttyS1 57600 vt100

I tried to lower baudrate to 19200 but it didn't help ...

Anyone is having the same problem ?

/tripoux