Date: Sat, 27 Jun 2009 15:54:36 -0700 From: "Kevin Oberman" <oberman@es.net> To: Ron Freidel <rfreidel@gmail.com> Cc: freebsd-current@freebsd.org Subject: Re: cpufreq probs dual core intel Message-ID: <20090627225436.C4FA01CC09@ptavv.es.net> In-Reply-To: Your message of "Sat, 27 Jun 2009 07:54:21 PDT." <f519719a0906270754q23d6835dy31180e430bafe520@mail.gmail.com>
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It makes it hard to follow the thread. Why? Please don't top post. > Date: Sat, 27 Jun 2009 07:54:21 -0700 > From: Ron Freidel <rfreidel@gmail.com> > Sender: owner-freebsd-current@freebsd.org > > Ok, a little more info... > > plugged in > > leroy# sysctl hw.acpi.acline > hw.acpi.acline: 1 > > unplugged > leroy# sysctl hw.acpi.acline > hw.acpi.acline: 0 > > and from /var/log/messages > Jun 27 07:18:46 leroy power_profile: changed to 'economy' > Jun 27 07:18:57 leroy power_profile: changed to 'performance' > > When unplugged the screen dims, the machine seems to slow down, yet heres > the problem... > plugged in > > leroy# sysctl dev.cpu.0.freq > dev.cpu.0.freq: 2000 > > unplugged > > leroy# sysctl dev.cpu.0.freq > dev.cpu.0.freq: 2000 > > I can change the freq using sysctl but it doesn't stick, no crash or > anything though. > > Whats odd to me is the temp the cpu is running at. > unplugged > dev.cpu.0.temperature: 54 > dev.cpu.1.temperature: 55 > plugged in > dev.cpu.0.temperature: 61 > dev.cpu.1.temperature: 62 > > Everything seems to be working as it should, just that pesky cpu freq > > Oh by the way, the laptop is a Dell Latitude D820, and I did find out after > testing acpi sleep while X/gnome is running it works! And another side > note... with FreeBSD 7.2 I get approx 2 hours battery life using wifi, > windows gives 1.5 hrs, OpenSolaris 1 hour, have not left the laptop > unplugged with current long enough to test. I'm now suspicious that this is a BIOS issue. A test for the real clock speed is to install sysutils/gkrellm2 and misc/gkx86info2. (There are probably other tools to do this, but this is what I use.) This will report he actual (measured) clock frequency (not to mention a lot of other useful system information). Note that only real frequency changes made by EST will show up. Both throttling and TCC use a scheme of skipping N of eight clock cycles. The actual clock frequency does not change. If EST is working, it will show up. I suspect that you will see a different frequency on battery. On many Lenovo/IBM laptops, the system drops the maximum clock from 2 GHz to 800 MHz when on battery. This is not anything to do with powerd. Have you checked with the Lenovo web site for BIOS updates?home | help
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