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Re: port-macppc/48255 Unreadable console output when netbooting macppc
The following reply was made to PR port-macppc/48255; it has been noted by GNATS.
From: David Holland <dholland-bugs%netbsd.org@localhost>
Subject: Re: port-macppc/48255 Unreadable console output when netbooting
Date: Sun, 8 Aug 2021 19:25:23 +0000
On Sat, Aug 07, 2021 at 04:25:01AM +0000, Michael wrote:
> > Does that mean the PR can be closed?
> In theory, yes.
> Sevan sent me an iBook which reproduced this bug and I figured out
> what's wrong - basically OF runs the radeon with tiling enabled which
> radeonfb didn't expect. It only disabled tiling for the video output
> logic and the blitter but not for video memory access via AGP, which is
> why drawing characters by hardware worked while software drawing did
> not, which ALWAYS_ACCEL_PUTCHAR worked around.
> I committed a proper fix a while ago - disable tiling translation for
> video RAM access from the host as well - I do not remember if it was
> pulled up into 9, I'll check.
Sounds more than in theory :-)
Given that the initial issue was filed against -current (and during
6.99) it doesn't probably really need to get into -9. So I'll close
(to the original submitter: if you would like it in -9 and it's not,
write in and let us know)
David A. Holland
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