linux-kernel - Re: [git pull] drm fixes + agp + one fb patch (bisected)

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Message-ID: <20100630155007.GA1696@arch.tripp.de>
Date:	Wed, 30 Jun 2010 17:50:07 +0200
From:	Markus Trippelsdorf <markus@...ppelsdorf.de>
To:	Alex Deucher <alexdeucher@...il.com>
Cc:	Dave Airlie <airlied@...ux.ie>, torvalds@...ux-foundation.org,
	linux-kernel@...r.kernel.org, dri-devel@...ts.sf.net
Subject: Re: [git pull] drm fixes + agp + one fb patch (bisected)

On Wed, Jun 30, 2010 at 11:34:53AM -0400, Alex Deucher wrote:
> On Wed, Jun 30, 2010 at 11:14 AM, Markus Trippelsdorf
> <markus@...ppelsdorf.de> wrote:
> > On Wed, Jun 30, 2010 at 11:03:33AM -0400, Alex Deucher wrote:
> >> On Wed, Jun 30, 2010 at 10:58 AM, Markus Trippelsdorf
> >> <markus@...ppelsdorf.de> wrote:
> >> > On Wed, Jun 30, 2010 at 10:49:41AM -0400, Alex Deucher wrote:
> >> >> On Wed, Jun 30, 2010 at 3:31 AM, Markus Trippelsdorf
> >> >> <markus@...ppelsdorf.de> wrote:
> >> >> > On Wed, Jun 30, 2010 at 08:54:40AM +0200, Markus Trippelsdorf wrote:
> >> >> >> On Wed, Jun 30, 2010 at 02:03:04AM +0100, Dave Airlie wrote:
> >> >> >> >
> >> >> >> > one fb layer fix in a flag I introduced,
> >> >> >> >
> >> >> >> > the rest are drm fixes:
> >> >> >> > radeon fixes: the larger ones in the command stream checker for older cards,
> >> >> >> > which was causing a lot of userspace apps to fail. Also some powerpc server fixes.
> >> >> >> > along with some updates to the evergreen command stream checker introduced in -rc1.
> >> >> >> >
> >> >> >> > agp: fix issue with warning on memory allocation + fallback to vmalloc.
> >> >> >> > ttm: fix regression introduced in -rc1 in memory allocation paths.
> >> >> >> >
> >> >> >> > The following changes since commit 7e27d6e778cd87b6f2415515d7127eba53fe5d02:
> >> >> >> >
> >> >> >> >   Linux 2.6.35-rc3 (2010-06-11 19:14:04 -0700)
> >> >> >> >
> >> >> >>
> >> >> >> I've tested these patches and they break my setup (RS780). On reboot, the
> >> >> >> monitor goes straight to powersaving mode and no framebuffer is shown.
> >> >> >
> >> >> > This is the result of the bisection:
> >> >> >
> >> >> > 07d4190327b02ab3aaad25a2d168f79d92e8f8c2 is the first bad commit
> >> >> > commit 07d4190327b02ab3aaad25a2d168f79d92e8f8c2
> >> >> > Author: Alex Deucher <alexdeucher@...il.com>
> >> >> > Date:   Sat Jun 12 11:50:13 2010 -0400
> >> >> >
> >> >> >    drm/radeon/kms: fix bandwidth calculation when sideport is present
> >> >> >
> >> >> >    Fixes fdo bug 27529:
> >> >> >    https://bugs.freedesktop.org/show_bug.cgi?id=27529
> >> >> >
> >> >> >    Reported-by: steckdenis@...oo.fr
> >> >> >    Signed-off-by: Alex Deucher <alexdeucher@...il.com>
> >> >> >    Cc: stable <stable@...nel.org>
> >> >> >    Signed-off-by: Dave Airlie <airlied@...hat.com>
> >> >>
> >> >> Markus, can you send me a copy of your vbios? as root:
> >> >> cd /sys/bus/pci/devices/<pci bus id of video card>
> >> >> echo 1 > rom
> >> >> cat rom ? /tmp/vbio.rom
> >> >> echo 0 > rom
> >> >
> >> > Attached.
> >> >
> >> >>
> >> >> Also, when you say "on reboot" do you mean the card comes up ok
> >> >> initially with the new kernel and then fails after a reboot, or fails
> >> >> directly after booting the new kernel?  Also, is there an oops or
> >> >> anything like that in dmesg?
> >> >
> >> > It fails directly after booting the new kernel. There is no oops or
> >> > anything like it in dmesg, because the kernel fails so early that it
> >> > could not log anything.
> >>
> >> Is the machine still pingable?  Can you ssh in? or is it completely dead?
> >
> > I don't think so. There is no disk activivy after the hang, but maybe
> > the kernel displays an oops, which I just can't see.
> 
> The attached patch should fix the issue.

Sorry, but it does not. I've still the same issue with your patch
applied.
-- 
Markus
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