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Bug#826629: [powerpc] fb-modules package : add radeon driver



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On Tue, 2016-06-07 at 11:04 +0200, Mathieu Malaterre wrote:
> Package: src:linux
> Version: 4.5.5-1
> 
> This is an attempt to resolve the symptoms from #825840 (1). As
> explain in this bug report, debian-installer is trying to use radeonfb
> on PowerPC. However two things happen:
> 
> 1. At startup Framebuffer is setup by Open Firmware (OFfb)
> 2. radeonfb currently does not support 'unloading' existing /dev/fb0
> 
> While it would make sense for radeonfb to take over Open Firmware, it
> is currently not implemented (2). So an alternate solution would be to
> use the 'radeon' driver instead.
> 
> I have been reading #782058 and #748398, and if I understand correctly
> debian-installer does not *explicitly* load 'radeonfb', instead this
> is done by `fb-modules-4.5.0-2-powerpc-di`. In which case I'd like to
> request that `radeon` be also added to the list of module for PowerPC.

This couldbe problematic because of the need for firmware in many
cases.  Having said that, the radeon driver is already used in some
other installer configurations, so maybe it will work.

Are there any problems with radeonfb other than #825840?  Because I
think that is not nearly serious enough to justify taking the risk of
changing to radeon.

Ben.

> I am not clear if this will be enough but at least this could be a
> step forward. Meanwhile I'll continue working on OFfb to get a
> non-inverted display (this is a different issue).
> 
-- 
Ben Hutchings
When in doubt, use brute force. - Ken Thompson

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