From: dick.streefland@altium.nl (Dick Streefland)
To: linux-kernel@vger.kernel.org
Subject: Re: PowerNow! frequency scaling causes stalls
Date: Tue, 04 Oct 2005 21:15:30 -0000 [thread overview]
Message-ID: <d88.4342f0f2.78c40@altium.nl> (raw)
In-Reply-To: 7484.4341a91e.3c3d8@altium.nl
spam@altium.nl (Dick Streefland) wrote:
| I have a new laptop with an AMD Mobile Sempron, and I'm experimenting
| with the PowerNow! frequency scaling. It seems to work, but on every
| frequency change, everything stalls for 3-4 seconds, even the X mouse
| pointer! Keyboard input seems to be buffered though. Is this normal?
I found out that the pauses only occur when the X server is running,
not when I work on the console, or remotely. I can easily reproduce
the problem by playing an mp3 file in a console with mpg321, and then
running burnK7 to force frequency scaling. Without X server running,
everything works fine, but when the X server is running, the music
skips on frequency changes. However, when I start the X server, but
switch back to the console with CTRL-ALT-F1, there are no skips.
Apparently, some Ubuntu users experienced the same problem:
http://ubuntuforums.org/archive/index.php/t-17816.html
https://bugzilla.ubuntu.com/show_bug.cgi?id=7121
I already recompiled the kernel with CONFIG_PREEMPT, but that doesn't
help. Is this some timing issue in the X server (X.org 6.8.2)? Is
there something else to try?
--
Dick Streefland //// Altium BV
dick.streefland@altium.nl (@ @) http://www.altium.com
--------------------------------oOO--(_)--OOo---------------------------
next prev parent reply other threads:[~2005-10-04 21:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-03 21:56 PowerNow! frequency scaling causes stalls Dick Streefland
2005-10-04 21:15 ` Dick Streefland [this message]
2005-10-04 21:49 ` Dick Streefland
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