From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Murphy Subject: Re: Monitor's EDID not recognised Date: Fri, 7 Mar 2008 22:37:36 +1100 Message-ID: <200803072237.36693.jeremy.william.murphy@gmail.com> References: <200803071923.32035.jeremy.william.murphy@gmail.com> <20080307110610.3a48021d@hyperion.delvare> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20080307110610.3a48021d-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: i2c-bounces-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org Errors-To: i2c-bounces-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org To: Jean Delvare Cc: i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org List-Id: linux-i2c@vger.kernel.org On Fri, 7 Mar 2008 09:06:10 pm Jean Delvare wrote: > > What does decode-dimms.pl say? If you have 4 memory modules on this > system then it is expected that sensors-detect (or i2cdetect) will see > 4 SPD EEPROMs at 0x50, 0x51, 0x52 and 0x53. You're absolutely right, they are my DIMMS. I assumed that was the EDID and its shadows because they started at the same address and I'd seen the same output on some other nvidia users' reports. Now I know better, thanks! > I'm not sure why you would expect the EDID EEPROM on the ICH7 SMBus. > I've never seen an EDID EEPROM there. The EDID EEPROM is typically > accessed through an I2C bus on the graphics adapter. You will need a > driver for this. The binary nvidia X11 driver should work, the nvidiafb > framebuffer driver should work as well (that's what I am using myself). > After loading the driver, 2 or 3 additional I2C buses should be listed > by "i2cdetect -l" (don't forget to load i2c-dev beforehand), and > decode-edid.pl (or the more user-friendly ddcmon script) should find > the EDID on one of them. I'm using nvidia's binary driver v169.07, and yes, the nvidia I2C buses are there. i2cdetect -l: i2c-3 i2c NVIDIA i2c adapter I2C adapter i2c-2 i2c NVIDIA i2c adapter I2C adapter i2c-1 i2c NVIDIA i2c adapter I2C adapter i2c-0 smbus SMBus I801 adapter at 0400 SMBus adapter However, decode-edid.pl and ddcmon both report that an EDID EEPROM is not found. Jeremy _______________________________________________ i2c mailing list i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org http://lists.lm-sensors.org/mailman/listinfo/i2c