[Bug 60523] Radeon DPM not working with 2 monitors attached to Radeon HD5770 (Juniper)

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https://bugzilla.kernel.org/show_bug.cgi?id=60523

--- Comment #60 from Mathias Tillman <master.homer@xxxxxxxxx> ---
I've done some further tests with overriding the power state level values as
detailed above, here are my results:

The stock values are
level 0: sclk: 10000, mclk: 30000, vddc: 950, vddci: 950
level 1: sclk: 77500, mclk: 105000, vddc: 1100 vddci: 1150
level 2: sclk: 90000, mclk: 105000, vddc: 1175, vddci: 1150

sclk, vddc and vddci were all at their stock values for all power levels during
my tests.

I changed mclk on power level 2 to the values below (OK means that it does not
get stuck in the highest power level):
95000 = OK
100000 = OK
104000 = OK
105000 = NOT OK
110000 = NOT OK

So as you can see it gets stuck when the mclk value is 10500 or higher, but why
that is I really have no idea. Could it be a firmware or VBIOS problem?

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