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@miomio have you already tried cherry-picking https://git.kernel.org/pub/scm/linux/ke … f1379307ab ?
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No I'm not previously aware of that. What is the method for patching?
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enable_rc6 was dropped because of something relating to Kaby Lake CPU's? Sorry, far too technical for me. I just wonder if that's the case perhaps applying the patch to revert the change will be OK for me using a non-Kaby Lake CPU. SoftRC6 - how does that work - automatically?
You don't have to worry about it, it should be enable automatically.
To check if you have RC6 usage, check with powerstat :
turbostat --quiet --show GFX%rc6,GFXMHz,GFXWatt,Bzy_MHz,PkgWatt,CorWatt,RAMWattYou will know if have RC6 event with this command. I run 5.5.13 at this time, RC6 is ok now but igpu scaling is moving whereas I set it at 300 MHz in TLP ...
Last edited by kikislater (2020-04-08 05:42:55)
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No I'm not previously aware of that. What is the method for patching?
See Patching_packages. The arch kernels will apply any source entries with the .patch extension so you only need to update the sources and checksum arrays.
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miomio wrote:enable_rc6 was dropped because of something relating to Kaby Lake CPU's? Sorry, far too technical for me. I just wonder if that's the case perhaps applying the patch to revert the change will be OK for me using a non-Kaby Lake CPU. SoftRC6 - how does that work - automatically?
You don't have to worry about it, it should be enable automatically.
To check if you have RC6 usage, check with powerstat :
turbostat --quiet --show GFX%rc6,GFXMHz,GFXWatt,Bzy_MHz,PkgWatt,CorWatt,RAMWattYou will know if have RC6 event with this command. I run 5.5.13 at this time, RC6 is ok now but igpu scaling is moving whereas I set it at 300 MHz in TLP ...
Thanks. What are the pros/cons of clamping 300Mhz cap on igpu? Can you share the one or two lines from your tlp.conf that does this? And you have tlp toggling this when on bat, right?
,
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miomio wrote:No I'm not previously aware of that. What is the method for patching?
See Patching_packages. The arch kernels will apply any source entries with the .patch extension so you only need to update the sources and checksum arrays.
Have you applied some patches yourself?
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I would like more battery life vs performance when I'm on battery.
My TLP conf is available here https://gist.github.com/kikislater/37e6 … -L193-L202
Still not working on 5.6.2 but it was working on 4.19.81 increasing battery life ...
Last edited by kikislater (2020-04-08 13:07:53)
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loqs wrote:miomio wrote:No I'm not previously aware of that. What is the method for patching?
See Patching_packages. The arch kernels will apply any source entries with the .patch extension so you only need to update the sources and checksum arrays.
Have you applied some patches yourself?
Could you be more specific? If you are asking have I patched arch packages myself. I have numerous times. If you are asking If I applied the patch I mentioned . No as I have no system affected by the issue.
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I'd suggest some determination of whether the issue of no GPU downclock when idle affects you before trying a patch, not least to determine if it fixes whatever issue you have.
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