Re: Re: Re: Re: accessible debian live cd

[jnqnfe <jnqnfe@gmail.com>]

Just to add something quickly: every entry in the bootloader menu
specifies a particular kernel, either the normal one or the graphical
one, and a set of kernel parameters. The speech synthesis option in the
install menu of the official install discs uses the graphical kernel,
with video parameters of just "vga=788", without the usual additional
graphical option of "video=vesa:ywrap,mtrr", and with the addition of
the following kernel parameter:

speakup.synth=soft

live-build actually allows the user to specify custom kernel parameters
to be added to the default list it outputs when creating the menu
entries. So you could use that means right now to craft a live disc with
menu entries that run with speech synthesiser enabled, and then just
pick the graphical entries from the bootloader menu (which use the
graphical kernel, as the install disc speech synth entry does), if use
of the graphical kernel is important.

There are two live-build parameters for this, one applicable to 'live'
menu entries (--bootappend-live) and the other applicable to 'install'
menu entries (--bootappend-install).

I don't know whether the exclusion of the video kernel parameter in the
official install disc speech synth entry is important. If so, you might
find that you can add a video parameter to your custom list and override
the default setting live-build supplies to the kernel, by having it
supplied to the kernel a second time. You would of course need to know
what to set it to, which I can't answer.

Btw, it is important that you stick to the default syslinux bootloader
and not switch it to grub/grub2 in your live-build config if you do the
above because there are currently several issues with using grub and
grub2 in relation to kernel parameters at the moment, issues which I
filed bug reports and patches for yesterday, but which haven't been
adopted yet.