How to set the serial output of Ubuntu system (ii)

Resolve Legacy Issues:

(1) After booting the VGA has "Linux login:" Login prompt, and the serial port side does not

Workaround: Change ttys0.conf to the following:

[Email protected]:~$ cat/etc/init/ttys0.conf # ttys-getty## This service maintains a Getty on tty1 from the point the SY Stem is# started until it is shut down Again.start on stopped RC runlevel=[2345] and (            Not-container or            container CONTAINER=LXC or            

(2) VGA on the boot is garbled, but select the first Ubuntu menu boot normal

Workaround: Modify/boot/grub/grub.conf, leaving only the following:

Menuentry ' ubuntu '--class ubuntu--class gnu-linux--class GNU--class os $menuentry _id_option ' gnulinux-simple-2c604c33 -d631-4440-b0fc-697bd6f32749 ' {        insmod Gzio        insmod part_msdos insmod        ext2        set root= ' HD0,MSDOS1 '        if [x$feature_platform_search_hint = xy]; then          search--no-floppy--fs-uuid--set=root--hint-bios=hd0,msdos1 --HINT-EFI=HD0,MSDOS1--hint-baremetal=ahci0,msdos1  2c604c33-d631-4440-b0fc-697bd6f32749        Else          Search--no-floppy--fs-uuid--set=root 2c604c33-d631-4440-b0fc-697bd6f32749        fi        linux   /boot/ Vmlinuz-3.16.0-23-generic root=uuid=2c604c33-d631-4440-b0fc-697bd6f32749 ro  text console=tty0 console=ttyS0, 115200N8        initrd  /boot/initrd.img-3.16.0-23-generic}

(3) This introduces a problem: The VGA will be parked in the Ubuntu boot interface, where a time-out period to set a countdown

Add set timeout=10 in Grub.cfg, i.e.:

[Email protected]:~$ cat/boot/grub/grub.cfgset timeout=10menuentry ' ubuntu '--class ubuntu--class gnu-linux--class GNU --class os $menuentry _id_option ' gnulinux-simple-2c604c33-d631-4440-b0fc-697bd6f32749 ' {        insmod Gzio        insmod Part_msdos        insmod ext2        set root= ' hd0,msdos1 '        if [x$feature_platform_search_hint = xy]; then          search-- No-floppy--fs-uuid--set=root--hint-bios=hd0,msdos1--hint-efi=hd0,msdos1--hint-baremetal=ahci0,msdos1  2c604c33-d631-4440-b0fc-697bd6f32749        Else          search--no-floppy--fs-uuid--set=root 2c604c33-d631-4440-b0fc-697bd6f32749        fi        linux   /boot/vmlinuz-3.16.0-23-generic root=uuid= 2c604c33-d631-4440-b0fc-697bd6f32749 ro  text console=tty0 console=ttys0,115200n8        initrd  /boot/ Initrd.img-3.16.0-23-generic}

How to set the serial output of Ubuntu system (ii)