From mboxrd@z Thu Jan 1 00:00:00 1970 From: mat Date: Sat, 08 May 2010 09:47:15 +0000 Subject: Re: [lm-sensors] Problem with intel i7: not detected Message-Id: <4BE53053.2010304@gmail.com> List-Id: References: <4BDEF051.7010708@gmail.com> In-Reply-To: <4BDEF051.7010708@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: lm-sensors@vger.kernel.org Dear Jean Thank a lot for taking time to answer to all my questions!! I will look=20 rather on the acpi side as you suggest! Merci! Matthieu Jean Delvare a =E9crit : > Hi Matthieu, > > On Mon, 03 May 2010 21:18:33 +0530, mat wrote: > =20 >> I have a Dell Studio 1557 with intel i7, installed with Ubuntu 9.10. As = >> many Dell Studio, it has the problem of overheating, reaching easily=20 >> temperatures of 80-90, sometimes even shutting down. Now, the fan does=20 >> not even start... >> =20 > > That would most likely be an ACPI issue. Did you try upgrading your > BIOS to the latest available version already? > > =20 >> I really have few knowledge of that, but I tried to get better insights = >> running lm-sensors, especially hoping to see whether the fan is=20 >> recognized... >> =20 > > Fans are almost never supported by lm-sensors on laptops. Except for > integrated CPU sensors (coretemp driver), lm-sensors has to rely on > ACPI for monitoring and that usually means a couple temperature values > being reported and that's it. > > You may be able to use vendor-specific kernel modules though, such as > thinkpad_acpi, eeepc-laptop etc. For some Dell laptops, there's the i8k > driver, you should give it a try if you didn't already, but probably > it's for older models. > > =20 >> Running >> sudo sensors-detect >> I have: >> Trying family `National Semiconductor'... Yes >> Found unknown chip with ID 0x8502 >> =20 > > We don't know all Super-I/O chips out there. But not all of them > include hardware monitoring features, especially on laptops, so the > above isn't necessarily meaningful. The next investigation step would > be to figure out which chip it is exactly, which means either taking > your laptop apart and looking at all the chips, or asking the vendor. > Not very appealing either way. > > =20 >> There was a similar post in the list: >> http://www.spinics.net/lists/lm-sensors/msg27726.html >> >> But I don't really understand what was dealt there, and especially what = >> are the conclusions, especially: >> -whether there is a way to have this chip detected >> =20 > > The chip is already detected. It isn't identified though. > > =20 >> -whether this is likely to solve my problem of overheating /fan not work= ing >> =20 > > No, rather unlikely. What you want is to disassemble your ACPI tables > (use acpidump) and have ACPI experts look at it. Maybe there's something > wrong in there, that can be fixed by a BIOS update or worked around in > the kernel. > > =20 _______________________________________________ lm-sensors mailing list lm-sensors@lm-sensors.org http://lists.lm-sensors.org/mailman/listinfo/lm-sensors