ubuntu-x-swat team mailing list archive

[Richard Theil <Richard.Theil@xxxxxx>]

I can confirm the issue on Lucid. Brand new Sapphire Radeon HD4350,
fresh Lucid install with current updates on a Core 2 Quad board. Heat
measurements have been taken in three locations: 1.) Digital pyrometer
aimed at passive heatsink over chip, 2.) Film sensor under heatsink next
to chip, 3.) Discrete Sensor under heatsink on other side of circuit
board. Pyrometer used is a Trotec TP4, Sensor controller is a no-name
8-channel thermometer for 5.25" drive slots. Readouts after settling
(idle desktop display, very slight activity, no 3D):

Stock (open source) driver: 1.) 80 deg C, 2.) 68 deg C, 3.) 63 deg C
fglrx (enabled from settings): 1.) 62 deg C, 2.) 54 deg C, 3.) 50 deg C

So it looks like the die does run about 20 degrees hotter with the open
drivers.

As an interesting sidenote, the Radeon replaces a Geforce 8400GS that
became unreliable and then finally died yesterday. When I diagnosed the
problem, the passive heatsink of the Geforce was too hot to touch even
after the computer was powered down for a short while, which would hint
at a similar problem.

-- 
[RV710] With ATI restricted driver deactivated, GPU is overheating
https://bugs.launchpad.net/bugs/488152
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