Bug#614221: linux-image-2.6.37-1-powerpc: 2.6.37-1-powerpc does not but on iMac G3
2011/2/21 Gunther Furtado <gunfurtado@gmail.com>:
> 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).
Being precise:
---
Console: colour dummy device 80x25
console [tty0] enabled, boot console disable
---
those are the last two line I see before rebooting.
cheers,
--
“Estes aprazíveis pensamentos tornam de tal modo leve o
meu trabalho que nunca estou tão ocioso como quando a ele me
dedico." Nietzsche citando Shakespeare (e como o Niezsche era
muito mentiroso, me resguardo o direito de transferir a culpa)
Gunther Furtado
Curitiba - Paraná - Brasil
gunfurtado@gmail.com
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