F18 doesn't see full laptop screen resolution

[Felix Miata]

On 2013-02-02 16:20 (GMT-0700) Chris Murphy composed:

> Felix Miata wrote:

>> Something must be looking at /proc/cmdline already or the installed
>> grub.cfg wouldn't be including nomodeset in the default stanza.

> ?

> OK forgive me for not paying attention if this has been said, but I'm not
> understanding if this is a feature request or a behavior complaint. Does
> the grub.cfg in question contain nomodeset? Or you want it to include
> nomodeset?

My first response to thread, subsequent to time OP provided access to 
Xorg.0.log. 
http://lists.fedoraproject.org/pipermail/test/2013-February/113591.html

>>> So the feature ultimately is both an anaconda and grub2 request.

>> Presumably mkconfig is using a default /etc/default/grub (<512 bytes).

> There is a minimal /etc/default/grub as part of the grub2 package. But
> anaconda (or maybe lorax?) is writing more into that file during the
> installation, specifically the GRUB_CMDLINE_LINUX= line. This modification
> is made before anaconda calls grub2-mkconfig.

Almost perfect. So if Anaconda sees itself putting nomodeset into 
GRUB_CMDLINE_LINUX, nomodeset inclusion should be aborted, and a generic 
/etc/grub.d/49_nomodeset be enabled that actually contains it. Or some 
equivalent process that provides a conventional stanza plus at least one 
nomodeset stanza. Just don't put nomodeset in every stanza unless lspci | 
grep VGA finds a string that means KMS is incompatible with a required X 
driver included in the release.

The way I understand GRUB_CMDLINE_LINUX_DEFAULT and GRUB_CMDLINE_LINUX dox, 
the roles are reversed from what's needed. I can imagine several cmdline 
parameters that should only be in one or the other and not both, one of which 
is nomodeset.

>> After finding nomodeset in /proc/cmdline, Anaconda could specify
>> mkconfig use an alternate such file or perform some other magic to get
>> the extra stanza included, maybe an /etc/grub.d/49_nomodeset.

> Requires anaconda be much more capable of creating grub2 grub.cfg entries
> than it presently is; as it defers to grub2-mkconfig to do this sort of
> thing.

I thought I was being clear enough. Anaconda must have already known cmdline 
contained nomodeset or it it wouldn't have caused its inclusion in the 
installed grub.cfg, however that was implemented within Anaconda.
-- 
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

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Felix Miata  ***  http://fm.no-ip.com/