I have got the same problem. HP ProLiant ML110 G6 with Lights-Out card. Ubuntu 10 LTS. The card offers an independent system providing access over network (separate Ethernet interface) to serial interface (COM1). I could setup BIOS access quite easily. I had no problems to provide login prompt and terminal access to the system. The only issue was with GRUB and messages as stated above. As far as I understand what is happening: - BIOS grabs the serial interface to provide console services there. - As the control is passed to grub the ttyS0 is still grabbed by BIOS service. - GRUB tries to setup the port with "serial" command and it causes "error: bad unit number." message. With that observation I simply decided to "use" this redirection, so I let GRUB use the "console". GRUB thinks he is writing on the screen, but BIOS redirects this output to ttyS0 (COM1). Here is my config: =============== GRUB_DEFAULT=0 GRUB_HIDDEN_TIMEOUT=7 GRUB_HIDDEN_TIMEOUT_QUIET=false GRUB_TIMEOUT=7 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet" #GRUB_CMDLINE_LINUX="" GRUB_CMDLINE_LINUX="console=tty0 console=ttyS0,115200n8"
# Uncomment to disable graphical terminal (grub-pc only) GRUB_TERMINAL=console #GRUB_TERMINAL=serial #GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1" =============== The only disadvantage is "jumping cursor" (it appears like crazy in various positions on the screen). Apart of that you have 7 seconds to press ESC key to stop autoboot. If you press the key the GRUB menu appears. So now I have remote access to all three stages - BIOS setting, GRUB menu and system console. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/537849 Title: fails to deal with a serial console correctly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/537849/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
