linux-kernel - Re: [Bug #11875] radeonfb lockup in .28-rc (bisected)

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Message-ID: <jefxlzi2x0.fsf@sykes.suse.de>
Date:	Tue, 11 Nov 2008 00:20:27 +0100
From:	Andreas Schwab <schwab@...e.de>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	James Cloos <cloos@...loos.com>,
	Paul Collins <paul@...ly.ondioline.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [Bug #11875] radeonfb lockup in .28-rc (bisected)

Benjamin Herrenschmidt <benh@...nel.crashing.org> writes:

> On Mon, 2008-11-10 at 21:39 +0100, Andreas Schwab wrote:
>> Benjamin Herrenschmidt <benh@...nel.crashing.org> writes:
>> 
>> > radeonfb: Fix accel problems with new imageblit hook
>> >
>> > Some radeon chips have issues with color expansion of pixmaps that
>> > aren't a multiple of 32 pixels wide. This works around it the same
>> > way X does by requesting the right pitch alignment from fbcon and
>> > then using the chip scissors to do clipping to the requested size.
>> 
>> Unfortunately this does not fix the suspend regression on PowerBook6,7.
>> Instead I have to use the workaround in
>> <http://marc.info/?l=linux-kernel&m=122515268301239&w=2>.
>
> Strange. The suspend problem happens also when X hasn't been launched at all ?

There seems to be some race involved here.  I cannot reproduce the
problem ATM.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@...e.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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