linux-kernel - Re: 2.6.19-rc4-mm2

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Date:	Thu, 9 Nov 2006 13:44:45 -0500
From:	Andrew James Wade <andrew.j.wade@...il.com>
To:	"Richardson, Charlotte" <Charlotte.Richardson@...atus.com>
Cc:	andrew.j.wade@...il.com, "Andrew Morton" <akpm@...l.org>,
	linux-kernel@...r.kernel.org,
	"Kimball Murray" <kimball.murray@...il.com>,
	linux-fbdev-devel@...ts.sourceforge.net
Subject: Re: 2.6.19-rc4-mm2

Hello Charlotte,

     I have just noticed that the garbled X-server mode is different
than what I thought it was. rinfo->depth is 24, but rinfo->bpp is 32.
(measured in radeon_write_mode). I haven't yet thought through the
implications of this. I've been unable to get the display correct, but
I've been trying to fix the wrong mode.
     The console mode is ->depth==8, ->bpp==8, and presumably the same
when it's garbled, but I've been unable to reproduce the problem since
instrumenting the kernel.

On Wednesday 08 November 2006 09:01, Richardson, Charlotte wrote:
> ... Do you think I should submit
> a patch that at least enables 24bpp for the chip I have where it
> definitely does work? I'm sure that is overly restrictive, but I don't
> know which ones work and which are broken at this point.

That sounds like a good idea to me, but I'm not very familiar with the
programming practices here.

...
> If you get a chance before I do, you might look at what Xfree86 does -
> they might have the workaround.

It looks like the X.org radeon driver doesn't support 24bpp.

-ajw
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