Bug#614221: linux-image-2.6.37-1-powerpc: 2.6.37-1-powerpc does not but on iMac G3
Hi,
2011/2/20 Ben Hutchings <ben@decadent.org.uk>:
> On Sun, 2011-02-20 at 10:17 -0300, Gunther Furtado wrote:
>> Package: linux-2.6
>> Version: 2.6.37-1
>> Severity: critical
>> Tags: d-i
>> Justification: breaks the whole system
>>
>> Hi,
>>
>> First of all: I cannot run reportbug while running the package I am reporting
>> this bug because I cannot boot from it.
>
> I suspect this is due to my changes to framebuffer driver selection,
> which you obviously noticed.
>
> The problem is that on PowerPC systems we cannot assume hardware support
> for a text mode (as on PCs) and so we must select from the following
> sets of framebuffer drivers:
> 1. Generic drivers using firmware or standard registers
> (FB_OF, FB_VGA16, ...)
> 2. Specific drivers without support for GPU acceleration
> (FB_INTEL, FB_NVIDIA, FB_RADEON, ...)
> 3. Specific drivers with KMS and GEM/TTM
> (DRM_I915, DRM_NOUVEAU, DRM_RADEON)
>
> The type 1 drivers generally allow switching to a different driver for
> the same hardware. But once we have loaded a type 2 or 3 driver there
> is no way to switch without rebooting.
>
> Previously we built-in several type 2 drivers, which meant KMS was not
> possible. However, current X drivers for Intel, Nvidia and AMD/ATI
> hardware require KMS and GEM/TTM so we cannot continue to do this. We
> need to load type 3 drivers, but they are so large that we don't want to
> make them built-in. Also, the AMD/ATI Radeon driver requests firmware
> for 3D acceleration, which is not available at the time built-in drivers
> are initialised.
>
> Therefore, I'm trying to build-in type 1 drivers that cover all PowerPC
> hardware. Apparently that doesn't work.
>
> Do you see any messages from the kernel, or just a blank screen?
>
Sorry I didn't mention it in my previous message but it seems that
your suspicions are correct:
The boot messages start to appear until the last to lines that mention
FB and tty1 (i am not close to my box right now but they have very
similar structure to the ones that appear when I successfully boot
2.6.37-trunk-powerpc).
What happens next is complete silence for about two or tree minutes
and then the machine reboots for itself.
cheers,
> Ben.
>
> --
> Ben Hutchings
> Once a job is fouled up, anything done to improve it makes it worse.
>
--
“Estes aprazíveis pensamentos tornam de tal modo leve o
meu trabalho que nunca estou tão ocioso como quando a ele me
dedico." Shakespeare
Gunther Furtado
Curitiba - Paraná - Brasil
gunfurtado@gmail.com
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