CPU fan running at full speed

[Lars E. Pettersson]

On 07/24/14 15:52, poma wrote:
...
> "drm/nouveau/therm: let the vbios decide on the automatic fan management
> mode"
> https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/drivers/gpu/drm/nouveau/core/subdev/therm/fan.c?h=linux-3.15.y&id=0e994d6
>
>    This should fix automatic fan management on fermi cards who do not
> have 0x46 entries in the thermal table.
>    On my nve6, the blob sets the default linear range from 40°C to 100°C
> but my nvcf's default values are 40°C to 85°C.
>    Let's keep 85 as a default for everyone.

I really must say that I do not understand why this change was made. 
Obviously it breaks the fan management for some (me included). Did it 
solve it for others? And what is 0x46 entries?

This is my card (a Quadro 2000):

01:00.0 VGA compatible controller: NVIDIA Corporation GF106GL [Quadro 
2000] (rev a1) (prog-if 00 [VGA controller])
	Subsystem: NVIDIA Corporation Device 084a
	Flags: bus master, fast devsel, latency 0, IRQ 45
	Memory at f4000000 (32-bit, non-prefetchable) [size=32M]
	Memory at e0000000 (64-bit, prefetchable) [size=128M]
	Memory at e8000000 (64-bit, prefetchable) [size=64M]
	I/O ports at e000 [size=128]
	Expansion ROM at f6000000 [disabled] [size=512K]
	Capabilities: [60] Power Management version 3
	Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
	Capabilities: [78] Express Endpoint, MSI 00
	Capabilities: [b4] Vendor Specific Information: Len=14 <?>
	Capabilities: [100] Virtual Channel
	Capabilities: [128] Power Budgeting <?>
	Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
	Kernel driver in use: nouveau
	Kernel modules: nouveau

NVC0 family (Fermi)
NVC3 (GF106) 	GeForce GT (440, 445M, 545, 555M, 630M, 635M), GTS
      		450, GTX 460M, Quadro 2000 (D), 2000M

Lars
-- 
Lars E. Pettersson <lars at homer.se>
http://www.sm6rpz.se/