[PlanetCCRMA] No boot with RT kernel

Fernando Lopez-Lezcano nando at ccrma.Stanford.EDU
Fri Jan 4 13:06:50 PST 2013

On 01/04/2013 03:08 AM, Bengt Månsson wrote:
> The graphic is nvidia
> lspci says: nVidia Corporation G72M [GeForce Go 7400] (rev a1)
> I run the stock kernel with default nouveau driver first and changed to
> nvidia driver after. Both OK.
> rt kernel didn't boot before or after the change (but I guess I never
> changed driver for the nt kernel)
> I removed rhgb quiet as adviced
> (never managed to edit in grub, but I could change in /etc)
> Now I get more output during boot
> Last line seems to be about nouveau and then it goes black
> It happens fast and I can't find any traces of the rt kernel in
> /var/log/messages

Ah, then it is probably a bug in nouveau in 3.4 that is fixed in 3.6. I 
do have a preliminary 3.6 rt build but it has some nfs issues so I have 
not released it yet. I guess I could release in the "testing" repository.

Anyway, the standard kernel is pretty good these days with regards to 
latency, and you can tune the irq priority with rtirq if you add the 
"threadirqs" to the kernel boot line.

-- Fernando

> 2013/1/2 Fernando Lopez-Lezcano <nando at ccrma.stanford.edu
> <mailto:nando at ccrma.stanford.edu>>
>     On 01/01/2013 01:42 PM, Bengt Månsson wrote:
>         Greetings
>         I just made a new installation from scratch to see if it helped. It
>         didn't so I ask you.
>         I have installed FC 17 on a Dell Latitude D820. Plain default
>         installation followed by an update.
>         3.6.10-2.fc17.i686.PAE starts ok
>         3.4.21-1.rt32.1.fc17.ccrma.__i686.rtPAE doesn't boot. I see grub
>         saying
>         'Loading initial ramdisk ...' and then the display goes black.
>         (I think it has worked with some previous version, probably in
>         may, but
>         now I can't remember which version.)
>         Any advice?
>     Could you try to boot without the graphical boot options? In grub go
>     to the kernel boot line and edit it by removing the "rhgb quiet"
>     line then press "b" for boot. You should get the full kernel output
>     if you boot like that and maybe we'll see where it is hanging...
>     What graphics card do you have?
>     -- Fernando

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