[nos-bbs] switching on legacy pty/tty devices from the grub boot line
bobtenty at gmail.com
Thu May 28 12:57:17 EDT 2009
They switched off the legacy pty/tty devices in the latest
linux distributions as it seems. Mandriva 2009.1, Ubuntu 9.04 Jaunty, etc.
(kernel 2.6-28 and 2.6-29)
I received an interesting note from Bernard, F6BVP this morning..
>Actually I received a response from a Mandriva kernel guy only 14
minutes after I posted the "bug" report !
>The explanation is very interesting for I did not know the trick.
>It is explained in the Wiki pages :
>LEGACY_PTY_COUNT is now 0
>Legacy pty (/dev/ttyxx) are still enabled in our kernel but we now
create none by default, to save several seconds of boot time. If you
need some >for an obsolete application, you can add the boot parameter
pty.legacy_count=32 (or another number depending on your needs).
This works also for Ubuntu 9.04 with kernel 2.6-28, etc as I tried
this out after receiving his mail.
Just open /boot/grub/menu.lst with an editor and add pty.legacy_count =
32 to the boot line, like below and reboot
title Ubuntu 9.04, kernel 2.6.28-11-server
kernel /vmlinuz-2.6.28-11-server root=/dev/mapper/linux-root ro
quiet splash pty.legacy_count= 32
So no need to recompile the kernel :=)
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