RE: atyfb: brokenness on PowerMac 5500 and Beige G3

One tiny important detail left out :)

According to information on the net
(http://patchwork.ozlabs.org/linuxppc/patch?id=1268) the precise regression
moment was between 2.6.10-rc1-bk3 and 2.6.10-rc1-bk8.
I have it confirmed between 2.6.8 and 2.6.13.4 myself.

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Geert
Uytterhoeven
Sent: Friday, October 28, 2005 10:19 PM
To: [email protected]
Subject: Re: [Linux-fbdev-users] atyfb: brokenness on PowerMac 5500 and
Beige G3

On Fri, 28 Oct 2005, coutal coutal wrote:
> i am using the atyfb driver on my powermac 5500 (ati rage II 215GT). after
> upgrading the kernel, three vertical bands of visible distortion appeared
in
> my console. they are not videomode-tied (tried almost all my card
supports)
> and thus i suspect some breakage in the driver.

Which kernel version worked fine? Which one caused the regression?

> can anyone please have a look at it?
> moreover, what could cause such an effect? would it be memory clock or pll
> programming? please enlighten me a bit, i am curious.

This looks more like a problem with the display FIFO programming (DSP_*
registers): some RAGE chips have 24 entries in the display FIFO, others have
32.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 --
[email protected]

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like
that.
							    -- Linus
Torvalds



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