From: "Miloslav Hůla" <miloslav.hula@gmail.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Ben Hutchings <ben@decadent.org.uk>
Cc: x86@kernel.org, 855183@bugs.debian.org,
LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Kan Liang <kan.liang@intel.com>
Subject: Re: Bug#855183: linux-image-4.9.0-0.bpo.1-amd64: modprobe intel_rapl_perf stay in uninterruptible sleep
Date: Mon, 20 Feb 2017 23:34:12 +0100 [thread overview]
Message-ID: <194d53c8-0c2f-d70c-2aa4-de8af393c94f@gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.20.1702171141220.3536@nanos>
Dne 17.02.2017 v 11:47 Thomas Gleixner napsal(a):
> What's really confusing is this information from the bug report:
>
> " When I changed:
>
> Power technology:
> - from Energy Efficient
> - to Custom
>
> Energy Performance BIAS Setting:
> - from Balanced Performance
> - to Performance
>
> problem disappeared. systemd-udevd starts normally, module can be
> normally rmmod/insmod'ed now, load is 0.07."
>
> Miloslav: Is there any chance you can try a 4.10-rc8 kernel on that
> machine?
I compiled 4.10-rc8 kernel with a stock
'/boot/config-4.9.0-0.bpo.1-amd64' config from Debian Jessie backports.
Then I reverted BIOS settings to previous state and rebooted the server.
Kernel and all modules loaded normally, rmmod/insmod intel_rapl_perf
passed normally.
Then, without any BIOS change, I rebooted with stock 4.9.0-0.bpo.1-amd64
and suprisingly, everything works, I cannot reproduce it.
My knowledge on the field of BIOS are shallow. I don't know what I can
do to reproduce the bug now.
King redards, Miloslav
next prev parent reply other threads:[~2017-02-20 22:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170215080829.27308.94177.reportbug@imap.fsv.cvut.cz>
2017-02-17 0:49 ` Ben Hutchings
2017-02-17 10:47 ` Thomas Gleixner
2017-02-20 22:34 ` Miloslav Hůla [this message]
2017-02-20 23:24 ` Thomas Gleixner
2017-02-21 9:10 ` Miloslav Hůla
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