[Nouveau] Bug or not?

Evan Foss evanfoss at gmail.com
Sun Feb 15 12:19:20 PST 2015 

Is there a way for me to manually force the clock speeds for the GPU
down to their lower operating limit? Is that dangerous?

On Sun, Feb 15, 2015 at 2:58 PM, Evan Foss <evanfoss at gmail.com> wrote:
> The first grep of dmesg is for the apple info so you know exactly what
> box I have. The second is to show that I am booting in EFI mode and
> not some bogus bios compatibility thing. The third is to show the gmux
> version. The fourth is to answer the question you actually asked.
>
> $ cat /proc/version
> Linux version 3.19.0 (root at turingatlarge) (gcc version 4.7.3 (Gentoo
> 4.7.3-r1 p1.4, pie-0.5.5) ) #3 SMP Sun Feb 15 01:09:59 EST 2015
>
> ------ $ dmesg|grep Apple
> [    0.000000] efi: EFI v1.10 by Apple
> [    0.000000] DMI: Apple Inc. MacBookPro9,1/Mac-4B7AC7E43945597E,
> BIOS MBP91.88Z.00D3.B08.1208081132 08/08/2012
> [    0.000000] ACPI: XSDT 0x000000008CD8E1C0 0000B4 (v01 APPLE
> Apple00  00000000      01000013)
> [    0.000000] ACPI: FACP 0x000000008CD8C000 0000F4 (v04 APPLE
> Apple00  00000000 Loki 0000005F)
> [    0.000000] ACPI: HPET 0x000000008CD8B000 000038 (v01 APPLE
> Apple00  00000001 Loki 0000005F)
> [    0.000000] ACPI: APIC 0x000000008CD8A000 0000BC (v02 APPLE
> Apple00  00000001 Loki 0000005F)
> [    0.000000] ACPI: SBST 0x000000008CD88000 000030 (v01 APPLE
> Apple00  00000001 Loki 0000005F)
> [    0.000000] ACPI: ECDT 0x000000008CD87000 000053 (v01 APPLE
> Apple00  00000001 Loki 0000005F)
> [    0.000000] ACPI: MCFG 0x000000008CD89000 00003C (v01 APPLE
> Apple00  00000001 Loki 0000005F)
> [    3.091740] usb 3-1.1: Manufacturer: Apple Inc.
> [    3.410516] usb 4-1.8.1: Manufacturer: Apple Inc.
> [    3.581141] usb 4-1.8.2: Manufacturer: Apple Computer, Inc.
> [    3.777265] usb 4-1.8.3: Product: Apple Internal Keyboard / Trackpad
> [    3.777267] usb 4-1.8.3: Manufacturer: Apple Inc.
> [    3.782615] input: Apple Inc. Apple Internal Keyboard / Trackpad as
> /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.8/4-1.8.3/4-1.8.3:1.0/0003:05AC:0252.0002/input/input13
> [    3.833440] apple 0003:05AC:0252.0002: input,hidraw0: USB HID v1.11
> Keyboard [Apple Inc. Apple Internal Keyboard / Trackpad] on
> usb-0000:00:1d.0-1.8.3/input0
> [    4.091248] apple 0003:05AC:0252.0003: hidraw2: USB HID v1.11
> Device [Apple Inc. Apple Internal Keyboard / Trackpad] on
> usb-0000:00:1d.0-1.8.3/input1
> [    4.319509] usb 4-1.8.1.3: Manufacturer: Apple Inc.
> [    4.457798] input: Apple Computer, Inc. IR Receiver as
> /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.8/4-1.8.2/4-1.8.2:1.0/0003:05AC:8242.0001/input/input18
> [    4.509982] appleir 0003:05AC:8242.0001: input,hiddev0,hidraw4: USB
> HID v1.11 Device [Apple Computer, Inc. IR Receiver] on
> usb-0000:00:1d.0-1.8.2/input0
>
> ------ $ dmesg|grep EFI
> [    0.000000] efi: EFI v1.10 by Apple
> [    1.220269] fb0: EFI VGA frame buffer device
> [    2.619144] EFI Variables Facility v0.08 2004-May-17
> [    4.205767] fb: switching to nouveaufb from EFI VGA
>
> ------ $ dmesg|grep gmux
> [    2.739845] apple_gmux: Found gmux version 1.9.35 [classic]
> [ 4299.386843] apple-gmux 00:03: System wakeup disabled by ACPI
>
> ------ ~/Documents $ dmesg|grep DSM
> [    4.205710] ACPI Warning: \_SB_.PCI0.IGPU._DSM: Argument #4 type
> mismatch - Found [Buffer], ACPI requires [Package]
> (20141107/nsarguments-95)
> [    4.205724] ACPI: \_SB_.PCI0.IGPU: failed to evaluate _DSM
> [    4.205739] ACPI Warning: \_SB_.PCI0.P0P2.GFX0._DSM: Argument #4
> type mismatch - Found [Buffer], ACPI requires [Package]
> (20141107/nsarguments-95)
> [    4.205749] ACPI: \_SB_.PCI0.P0P2.GFX0: failed to evaluate _DSM
>
> On Sun, Feb 15, 2015 at 5:13 AM, Pierre Moreau <pierre.morrow at free.fr> wrote:
>> Does the Nvidia card auto-suspends or do you have to force it? If not, does
>> it report some “failed to parse _DSM” message?
>> I have a mid 2009 MBP who uses a different _DSM handles than the ones
>> Nouveau currently supports, and I wondered if they were related to the Apple
>> Gmux or not. So, as you have a different model with a different Nvidia card
>> but still with an Apple Gmux, I’d be interested to know if you have the same
>> _DSM handles as I have.
>>
>> Pierre
>>
>> On 15 Feb 2015, at 06:44, Evan Foss <evanfoss at gmail.com> wrote:
>>
>> Thanks again.
>>
>> This works and the heat has dropped substantially. It is still not as
>> cool as I would like but this will do for now. I still need to file a
>> bug report with the intel / apple gmux people.
>>
>> -Evan
>>
>> On Sat, Feb 14, 2015 at 10:42 PM, Evan Foss <evanfoss at gmail.com> wrote:
>>
>> On the older kernel
>>
>> [    6.494956] nouveau  [     CLK][0000:01:00.0] 07: core 270-405 MHz
>> memory 838 MHz
>> [    6.494989] nouveau  [     CLK][0000:01:00.0] 0a: core 270-774 MHz
>> memory 1560 MHz
>> [    6.495015] nouveau  [     CLK][0000:01:00.0] 0e: core 270-774 MHz
>> memory 4000 MHz
>> [    6.495182] nouveau  [     CLK][0000:01:00.0] --: core 405 MHz memory 680
>> MHz
>>
>> On Sat, Feb 14, 2015 at 10:35 PM, Evan Foss <evanfoss at gmail.com> wrote:
>>
>> Because I am on a macbook the VBIOS might be wonky.
>>
>> I tried turning off nVidia and using intel. The result was a blank
>> screen. I know other people had the same bug which was something to do
>> with reprobing lvds?! I saw patches go by and every time I tried one
>> the results were the same. fail. I was actually about to post a bug
>> report to the intel (i915) people about it.
>>
>> I tried to work out how to get optimus to work. After trying several
>> different sets of instructions I never found a working configuration
>> and put it aside. I never used to use opengl but lately my pcb
>> software has adopted it so my needs changed.
>>
>> I will get back to you with more results on this matter after I get
>> the newer kernel up.
>>
>>
>> On Sat, Feb 14, 2015 at 10:09 PM, Ilia Mirkin <imirkin at alum.mit.edu> wrote:
>>
>> On Sat, Feb 14, 2015 at 9:56 PM, Evan Foss <evanfoss at gmail.com> wrote:
>>
>> I have a side question which may be the subject of a future second bug
>> report. I have been lurking on the nouveau mailing list for some time.
>> I understand from various posts that the nvidia gpu clock speed right
>> now is set to the lowest possible setting. Why does my machine run so
>>
>>
>> Often but not always the case -- the clock speed is whatever the VBIOS
>> leaves it in. For kepler, that is usually the lowest setting.
>>
>> much hotter in linux than macos? I turned off the intel graphics and
>> the cpu clock is set to the lowest available speed.
>>
>>
>> You should instead turn off the nvidia graphics and run off intel --
>> intel is much less power-hungry than nvidia, even at the lowest
>> clocks. If it's an optimus setup, the nvidia gpu should automatically
>> power off until needed (either because some display is connected to
>> it, or for offloading).
>>
>>
>> How do I get a display of the GPU clocking speeds?
>>
>>
>> You should see it in dmesg... look for CLK lines. The ones with -- (or
>> AC/DC) will show the current setting. Or boot with nouveau.pstate=1
>> and you should have a /sys/class/drm/card*/device/pstate file.
>>
>>  -ilia
>>
>>
>>
>>
>> --
>> Home
>> http://evanfoss.googlepages.com/
>> Work
>> http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/
>>
>>
>>
>>
>> --
>> Home
>> http://evanfoss.googlepages.com/
>> Work
>> http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/
>>
>>
>>
>>
>> --
>> Home
>> http://evanfoss.googlepages.com/
>> Work
>> http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/
>> _______________________________________________
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>>
>>
>
>
>
> --
> Home
> http://evanfoss.googlepages.com/
> Work
> http://forge.abcd.harvard.edu/gf/project/epl_engineering/wiki/



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