linux-kernel - Re: Regression: starting X locks box with git master

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Date:	Thu, 24 Apr 2008 20:39:25 +0000
From:	"Justin Mattock" <justinmattock@...il.com>
To:	"James Cloos" <cloos@...loos.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Regression: starting X locks box with git master

On Thu, Apr 24, 2008 at 7:59 PM, James Cloos <cloos@...loos.com> wrote:
> 3dc5063786b273f1aee545844f6bd4e9651ebffe was current when I compiled.
>
>  With that kernel, my laptop locks up as soon as I startx.
>
>  The Xorg.0.log showed that the radeon driver got as far as starting
>  the i2c calls to the M7 video card.
>
>  After that the box would reply to ICMP pings and SysRq-B, but was
>  otherwise non-responsive.  Even SysRq-[KSU] seemed to do nothing.
>
>  v2.6.25 works fine.
>
>  There are 3562 commits (including merges) between those two, and
>  it takes an hour or more for each kernel compile.  Bisecting will
>  be quite painful.  And I only have the one box to work on.  But I
>  will see what I can do.
>
>  Posting before bisecting in case it helps anyone else....
>
>  -JimC
>  --
>  James Cloos <cloos@...loos.com>         OpenPGP: 1024D/ED7DAEA6
>
>
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>

I seem to expiriencing lockups as well, vary annoying, "I'm getting
freezes before X is even started", "and after as well." : (
 using nmi_watchdog=1, or nohz=off, or nolapic_timer, or idle=poll
seems to help me with having no freezes, but using powertop
I'm seeing (100%) under AVG residency, which is a bit alarming to me.
If I dont give any boot options and leave my system as it was, I need
to boot and as fast as possible use glxgears to keep the processor at
a certain level, from freezing, but is hard to do.
overall I think this has to do with nohz, right now I have nohz=off
with highress on and the system seems to be behaving properly.
regards;

-- 
Justin P. Mattock
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