Bug#782058: Pegasos II: installer boots up to 'returning from prom_init'
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On 04/09/2015 12:38 AM, Milan Kupcevic wrote:
>> Well, yes. As you could see from the bug report you linked above,
>> compiling radeonfb into the kernel broke X on basically all
>> Radeon cards.
>>
>
> It seems that radeonfb was compiled into the kernel since the dawn
> of time.
On the powerpc Debian kernel, yes, on the other architectures, no.
radeonfb has been deprecated long time ago and should no longer be
used.
The only reason it was compiled into the powerpc kernel without anyone
complaining is the fact that the xf86-video-ati (= Radeon X.Org) driver
in Wheezy was still old enough [1] to support userland mode-setting
which was dropped upstream in version 7.0.0 almost three years ago [2].
This is no longer true in Jessie and therefore we have to use radeon,
not radeonfb. Otherwise you won't get any X display.
>> The reason is that the radeon KMS module does not work once
>> radoenfb has been loaded once. Even if you unload radeonfb later,
>> the radeon module will still refuse to work meaning X will not be
>> usable.
>>
>
> This is good to know.
I did thorough testing for the bug report you linked above which is
why I am a bit surprised you could convince Ben so easily to partly
revert my change. I think I also explained in the other bug tracker
that you have to use KMS these days as UMS is being phased out.
>> Well, I think this can be answered straight-forward: radeonfb is
>> the wrong solution as radeonfb does not support X which means you
>> can use the text-based installer only. But I guess you never
>> tested that as you stated in your bug report.
>>
>> The proper fix for your problem is not to revert my previous fix
>> but to use the proper driver, thus reopening.
>>
>
> There was no "my previous fix," just reporting about the state of
> the things in RC1 and RC2. I'm trying to help as I have access to
> more than a few power and powerpc machines.
Sure, but please ask people in the future before you are asking for
changes which you don't understand. I also have tons of different
hardware available here, including several powerpc machines and
way beyond that (m68k, sh4, mips etc).
I think you should at least discuss such changes with some more people
before you ask for them to be integrated. For anyone who follows X.Org
and kernel development, it is common knowledge that all the non-KMS
drivers in the kernel are being deprecated and that you should no
longer use them. This also applies to X.Org.
It would be nice if you could CC me in the future if you are having
issues with non-x86 hardware, especially anything that's powerpc,
Macintosh, or - like in this case - Amiga-related hardware.
Adrian
- --
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer - glaubitz@debian.org
`. `' Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
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