linux-kernel - Re: drm/radeon/kms regression: 2.6.33-rc2 does not boot

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Date:	Sat, 26 Dec 2009 13:57:59 -0500
From:	Alex Deucher <alexdeucher@...il.com>
To:	"Dr. David Alan Gilbert" <linux@...blig.org>
Cc:	Dave Airlie <airlied@...il.com>,
	Andrei Gaponenko <andrei.gaponenko@...n.ch>,
	linux-kernel@...r.kernel.org
Subject: Re: drm/radeon/kms regression: 2.6.33-rc2 does not boot

On Fri, Dec 25, 2009 at 7:35 AM, Dr. David Alan Gilbert
<linux@...blig.org> wrote:
> * Dave Airlie (airlied@...il.com) wrote:
>> On Fri, Dec 25, 2009 at 8:08 PM, Andrei Gaponenko
>
> <snip>
>
>> >> Can you wait for a minute or so and see if it continues? though this sounds like
>> >> something different than others have seen.
>> >
>> > I did let it to sit for many minutes during some of iterations of the
>> > bisection; did not notice any progress.
>> >
>> > Andrei
>> >
>> > Please Cc me directly on replies.
>>
>> Did you install the irq firmware from
>> http://people.freedesktop.org/~agd5f/radeon_ucode/
>>
>> I need to add a pointer to the Kconfig (just wasn't there when I sent it i).
>
> I had the same problem (and the same fix); For me it gave up after 60
> seconds of waiting for the firmware and panic'd.
>
> Unfortunately at that point it was still at a VGA display without
> much res, so while I got the backtrace I didn't get the top of the oops.
> (and it was too early for netconsole)
>
> It would be better if the firmware was missing for it just not to do
> modeswitching and carry on; I wonder if it was hangcheck or the like
> that killed it?

Dave's tree already has support for falling back gracefully if any of
the ucode is missing.

Alex
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