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merasil
Paper Tape
Posts: 2
Registered: ‎05-04-2018
Location: DE
Views: 5,367
Message 11 of 65

Re: [X1C6/T480s] low cTDP and trip temperature in Linux

even under windows it starts power throttling after a while... my cTDP drops to 13W. My temps are in 70-80s range while not throttled (PL1, PL2)

lgraf
What's DOS?
Posts: 2
Registered: ‎05-04-2018
Location: DE
Views: 5,313
Message 12 of 65

Re: [X1C6/T480s] low cTDP and trip temperature in Linux

I expirence the same problem (T480s), a solution would be great!

zlice
Punch Card
Posts: 8
Registered: ‎05-01-2018
Location: US
Views: 5,277
Message 13 of 65

Re: [X1C6/T480s] low cTDP and trip temperature in Linux

no, it does not help (i'm on 1.15, can reach 4.2ghz but it immediately throttles and always tries to keep aroud 75C)

wintermute42
SCSI Port
Posts: 28
Registered: ‎04-07-2018
Location: DE
Views: 5,234
Message 14 of 65

Re: [X1C6/T480s] low cTDP and trip temperature in Linux

Ok, thank you for reporting your test results.
There seems to be a workaround: https://github.com/erpalma/lenovo-throttling-fix
I haven't tried it yet, but it looks promising. Is anyone here who has tried it and can report his experience with this script?

In any case, a big thank you to the enthusiastic individual who took the time to develop this script!

This is such a great piece of hardware - it's just sad that nowadays quite a lot of effort seems to be necessary to get a new Thinkpad to work satisfactorily with anything but Windows (which is not an option for me).
erpalma
Fanfold Paper
Posts: 6
Registered: ‎03-30-2018
Location: IT
Views: 5,203
Message 15 of 65

Re: [X1C6/T480s] low cTDP and trip temperature in Linux

Actually that repo is mine Smiley Wink I'm using that script since I wrote it without any issue!

wintermute42
SCSI Port
Posts: 28
Registered: ‎04-07-2018
Location: DE
Views: 5,186
Message 16 of 65

Re: [X1C6/T480s] low cTDP and trip temperature in Linux

Wow, that's great! Thanks for opensourcing it :-)
Are there any requirement in terms of supported Linux distros? I'd like to use it in Ubuntu 18.04.
What would be the recommended way to uninstall it?
zlice
Punch Card
Posts: 8
Registered: ‎05-01-2018
Location: US
Views: 5,091
Message 17 of 65

Re: [X1C6/T480s] low cTDP and trip temperature in Linux

After using erpalma's python script...I'm not impressed with performance. I don't think it's all lenovo's fault.

I have a laptop from a few years back and without messing with anything it still compiles mesa faster than my x1 carbon with tweaks
12min without tweaks

10.5min with cpufreq set to performance

8.5min with erpalma's python
^8650u
7min with a 4810mq (also 4core/8thread, -.- then they quit and made dual core for half a decade, why?)

 

i feel kinda robbed...

nightreveller
Fanfold Paper
Posts: 9
Registered: ‎05-17-2018
Location: NL
Views: 4,261
Message 18 of 65

Re: [X1C6/T480s] low cTDP and trip temperature in Linux

Huge thanks to @erpalma for the work on this issue! Priceless.

 

@Lenovo: please keep ThinkPad's reputation of good Linux compatibility up!

erpalma
Fanfold Paper
Posts: 6
Registered: ‎03-30-2018
Location: IT
Views: 4,242
Message 19 of 65

Re: [X1C6/T480s] low cTDP and trip temperature in Linux

Hmmm... That's strange. On my T480s (8550u) with Gentoo:

 

media-libs/mesa-18.0.2 -> merge time: 2 minutes and 57 seconds.

This includes download + compile + install phases. I have almost the same performance of my desktop i7 6700 in multicore!

zlice
Punch Card
Posts: 8
Registered: ‎05-01-2018
Location: US
Views: 4,045
Message 20 of 65

Re: [X1C6/T480s] low cTDP and trip temperature in Linux

hm, what's your use flags/emerge -pv ?

(see that i'm using 17.3.9, 18 i think compiles faster so that's 1 thing. also use tmpfs for /var/tmp/portage)

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