[syslinux] problems with isolinux over serial console

[Marc Pascual]

Hi,

I'm missing something in my isolinux.cfg configuration but I'm not quite
sure what it is. menu.c32 displays properly over video console, but on the
serial connection, the first letter of the labels are duplicated, and the
margin is pushed off towards the right:

http://dl.dropbox.com/u/59666947/isolinux.jpg

my config is:

--- cut ---

   1. serial 0 115200
   2. console 0
   3.
   4. menu color screen 0;0
   5. menu color border 0;0
   6. menu color title 0;0
   7. menu color unsel 0;0
   8. menu color hotkey 0;0
   9. menu color sel 37;40
   10. menu color disabled 0;0
   11. menu color scrollbar 0;0
   12. menu color tabmsg 0;0
   13. menu color cmdmark 0;0
   14. menu color cmdline 0;0
   15. menu color pwdborder 0;0
   16. menu color pwdheader 0;0
   17. menu color pwdentry 0;0
   18. menu color timeout_msg 0;0
   19. menu color timeout 0;0
   20. menu color help 0;0
   21.
   22. default menu.c32
   23. timeout 600
   24.
   25. display boot.msg
   26.
   27. Menu title RHEL6 rescue image
   28.
   29. label rescue
   30.   menu label ^Rescue installed system
   31.   kernel vmlinuz
   32.   append initrd=initrd.img ks=
   http://ksserver/kickstart/ks/labserver002-rescue.ks ksdevice=eth0
   console=tty console=ttyS0,115200  ramdisk_size=32758 ip=45.32.255.21netmask=
   255.255.255.128 gateway=45.32.255.1 dns=45.3.128.10 rescue
   33.
   34. label local
   35.   menu label Boot from ^local drive
   36.   localboot 0xffff
   37.
   38. label memtest86
   39.   menu label ^Memory test
   40.   kernel memtest
   41.   append -

--- /cut ---

Is there anything I can do to get the menu displayed properly over serial
console?

regards,
Marc