From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
Subject: [Bug 18638] nouveau fails on GeForce 9400M
Date: Tue, 20 Oct 2009 09:12:06 -0700 (PDT)
Message-ID: <20091020161206.D83DE2DC101@annarchy.freedesktop.org>
References: <bug-18638-8800@http.bugs.freedesktop.org/>
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http://bugs.freedesktop.org/show_bug.cgi?id=18638





--- Comment #11 from Pekka Paalanen <pq-X3B1VOXEql0@public.gmane.org>  2009-10-20 09:12:04 PST ---
(In reply to comment #10)
> 
> echo mmiotrace > /sys/kernel/debug/tracing/current_tracer
> bash: echo: write error: Invalid argument

This should mean that mmiotrace support has not been compiled into the kernel.
Check that CONFIG_MMIOTRACE is enabled: Kernel hacking -> Tracers [*] -> Memory
mapped IO tracing.


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