hand-rolled kernels sometimes work, sometimes not

[Robert P. J. Day]

On Sat, 25 Dec 2010, Colin Law wrote:

> On 25 December 2010 20:47, Robert P. J. Day <rpjday at crashcourse.ca> wrote:
> > On Sat, 25 Dec 2010, Colin Law wrote:
> >
> >> On 25 December 2010 17:47, Robert P. J. Day <rpjday at crashcourse.ca> wrote:
> >> >
> >> >  ok, things just got worse.  i went back and selected the latest
> >> > ubuntu-supplied kernel -- 2.6.35-23-generic -- and *that* one failed
> >> > as well.  early in the boot process, i got a *very* brief glimpse of
> >> > something like "i915 graphics turbo disabled" or something like that,
> >> > after which total darkness. so i'm now in the position of having what
> >> > looks like precisely *one* working kernel, which i rolled myself and
> >> > which works for no reason that i know of (and which is the kernel i'm
> >> > running right now).
> >>
> >> Do the logs tell you anything?
> >
> >  ok, based on a brief flash of a message on the display before it
> > went totally blank early in the boot sequence, i'm currently googling
> > on "failed to get i915 symbols" and "ubuntu":
> >
> > http://www.google.ca/#hl=en&biw=1011&bih=718&q=%22failed+to+get+i915+symbols%22+ubuntu&aq=f&aqi=g1&aql=f&oq=&gs_rfai=&fp=9000686101e0b807
> >
> > i still don't understand why my rc5 kernel is working and the rc7 one
> > isn't.
>
> Is there nothing in syslog?
>
> Have you tried the recovery mode boot?

  my problem seems to be nicely described here:

http://www.oblurb.com/ubuntu-dell-latitude-e6510-intel-gpu-blank-screen.html

but first, there are martinis to drink.  i'll attack this later.

rday
3
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Robert P. J. Day                               Waterloo, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
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