NVIDIA driver and graphical grub2?

[Nicolas Chauvet]

2012/5/17 Nicolas Chauvet <kwizart at gmail.com>:
> Hi Adam,
>
> 2012/5/17 Adam Williamson <adamwill at shaw.ca>:
>> So I'm talking to a guy on IRC (freegz), who uses the NVIDIA driver. It
>> seems that when he converted from non-graphical grub2 to graphical grub2
>> (which we've changed relatively recently in F17), the NVIDIA driver
>> stopped working. It sounds rather like the issue with nomodeset and
>> graphical grub2 raised in this thread on test:
>
> I don't understand why the nvidia driver would have any impact on the
> grub2 level.
> The only option used by the driver is not nomodeset but
> nouveau.nomodeset=0 and rd.driver.blacklist=nouveau which doesn't
> involve the nvidia driver at this time.
>
>> https://lists.fedoraproject.org/pipermail/test/2012-May/108022.html
> I saw that message - unfortunately no usefull information on this thread.
>
>> so, it sounds like someone might need to check into how to make nvidia
>> play nice with graphical grub2. I'm guessing it's possible as ubuntu
>> seems to default to graphical grub2, but I thought it'd be worth a
>> heads-up.
>
> I will try to see if that can be improved with an options. But again,
> we don't load anything from nvidia at the grub2 level. So I'm not sure
> to understand.
>
> That been said, nvidia used to unsupport any vga= like boot option
> that will allow graphical boot (plymouth level, this time) with nvidia
> driver using vesafb.
> As a consequence, I  don't think to enable this by default.
>
>
> FYI, I plan an enhancement to support a second grub menu for allowing
> a switch with opensource drivers from grub2.
> https://bugzilla.rpmfusion.org/show_bug.cgi?id=2317


OK , so I've reproduced the problem with a fresh install.
- First, "grubby --default-kernel" seems to be broken again. (I will
workaround it from the package).
- Second, graphical boot activation seems to trigger vesafb as a
failback from none KMS driver.
This is known incompatible with the nvidia binary, and I expect that's
the reason why Xorg cannot load.
Help welcomed in this area.

Nicolas (kwizart)