How to monitor the GPU temperature?

[that guy]

I'm currently using a 2.6.35-rc3 Zen kernel and I'm trying to get my Radeon HD 2400's temperature. I've looked into my dmesg but I don't know what I'm looking for... Any pointers please?

The only i2c I can see here is that i801, which I assume is from my motherboard, and it is already built into my kernel. sensors-detect does see something related to my Radeon, but no thermal monitoring there:

Next adapter: Radeon i2c bit bus DVI (i2c-1)
Do you want to scan it? (YES/no/selectively): 
Client found at address 0x50
Probing for `Analog Devices ADM1033'...                     No
Probing for `Analog Devices ADM1034'...                     No
Probing for `SPD EEPROM'...                                 No
Probing for `EDID EEPROM'...                                Yes
    (confidence 8, not a hardware monitoring chip)

Thanks for any input.

[Loris]

Check your dmesg, it should mention what i2c chip is being used on the radeon board, then load the hwmon module for the chip in question.

Thank you, I didn't know that.

[agd5f]

Check your dmesg, it should mention what i2c chip is being used on the radeon board, then load the hwmon module for the chip in question.

[SledgeHammer_999]

R5xx cards used external i2c thermal chips. 2.6.34 exposes the i2c bus and you can manually load the i2c hwmon driver. The drm-radeon-testing branch will automatically load the proper hwmon driver for your card. The temp and fan info is exposed via the sysfs hwmon interface.

I have a 2.6.34 kernel.
Can you tell how to load the i2c module and then how to read the temp?

[agd5f]

The title says it all. Is there any tool for my x1800xl that can show me the temperature?

R5xx cards used external i2c thermal chips. 2.6.34 exposes the i2c bus and you can manually load the i2c hwmon driver. The drm-radeon-testing branch will automatically load the proper hwmon driver for your card. The temp and fan info is exposed via the sysfs hwmon interface.

[SledgeHammer_999]

The title says it all. Is there any tool for my x1800xl that can show me the temperature?