severity 563003 normal
retitle 563003 New KMS method in experimental destroys VT1 history on DM start
tag 563003 -moreinfo
kthxbye

On Tue, Dec 29, 2009 at 5:15 PM, Julien Cristau <jcris...@debian.org> wrote:
> I'm not sure why you're mentioning initramfs-tools, since there seems to
> be wide agreement that the kms driver shouldn't be loaded in the
> initramfs.

I'm uncertain what you mean by "wide agreement" because both (Fedora
and Ubuntu) distributions shipping with KMS by default are loading the
KMS driver *in* their respective initramfs's. Perhaps you a referring
to wide agreement among Debian developers?

> I'm also puzzled by your assertion that this method is "not upstream
> recommended", since it was acked by Carl Worth (see #555906).

I read his acknowledgement as a blessing on both your packaging and
the approach of using a modprobe conf. file. And while Carl is
certainly respected, he is *not* the upstream; that would be Eric
Anholt and Keith Packard.  Regardless, your method is not necessarily
incompatible with what I suggested. Indeed, an initramfs system which
does copy in the modprobe configuration file is quite compatible with
your method. It just doesn't work in Debian because that is not what
was added to initramfs-tools and it's unnecessary in Fedora and Ubuntu
because of the kernel module parameter that you pointed to. If
initramfs-tools were extended to copy-in and then honor the modprobe
configuration data, then "video=i915" would be sufficient for invoking
KMS (that is, "video=i915:modeset=1" would be unneeded.)

I'm not saying that this would be the preferred method (indeed you are
still having to modify the kernel line) but it would be one way. IMHO,
"video=i915:modeset=1" is the most sane method as long as the kernel
parameter is to remain as it is currently in Debian.

Either way, it *must* be loaded in the initramfs to preserve VT1 which
is what this bug is about.

> So less assertions and more evidence would be nice.

Just try either of the latest Fedora's or Ubuntu's release for a single boot.



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