linux-kernel - Stable version 2.6.32.2 broke my KMS Radeon setup

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Message-ID: <4B2E1241.9070503@xs4all.nl>
Date:	Sun, 20 Dec 2009 13:02:09 +0100
From:	Ruud Linders <kernelml@...all.nl>
To:	linux-kernel@...r.kernel.org
Subject: Stable version 2.6.32.2 broke my KMS Radeon setup

Hello,

After upgrading from 2.6.32.1 to 2.6.32.2 my radeon KMS broke. Broke
meaning after kernel boot at the moment radeon module is loaded, I get a
blank screen, monitor goes in powersave mode and machine stops booting
(ping-able but can't login via ssh and nothing in the logs after
Sysrq-S-U-B reboot).

Upgraded userspace  (drm/mesa/xf86-video-ati) to git version from
19-december but no change.

Note this happens on 2 different systems, both connected via DVI-D to an
LCD monitor:
  Chipset: "ATI RV730XT [Radeon HD 4670]" (ChipID = 0x9490)
and
  Chipset: "ATI Radeon HD 3200 Graphics" (ChipID = 0x9610)

So I started looking at the diff between 2.6.32.1 & 2.6.32.2, backing
out attached change makes everything work again. Anything else I can
provide to debug/fix this, let me know.

Ruud

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