Hi Jon, Please can you help? Thanks Rudolf Dne 10.6.2018 v 07:14 Guenter Roeck napsal(a): > On Sun, Jun 10, 2018 at 03:03:47AM +0800, Kai-Heng Feng wrote: >> at 23:49, Guenter Roeck <linux@xxxxxxxxxxxx> wrote: >> >>> On Thu, Jun 07, 2018 at 11:03:13AM +0800, Kai Heng Feng wrote: >>>> Hi Guenter, >>>> >>>> A user thinks the Ryzen 2700 temperature may not be correct [1]. >>>> Can you take a look when you have time? Thanks. >>>> >>>> Also, where can I find all these temperature offsets? I googled but with >>>> no >>>> result. >>> Problem is that the offsets are not documented in public, making it >>> difficult to find out. For Ryzen 2700, there is currently no offset >>> configured; I was told that there is none. For Ryzen 2700X, the offset >>> is 10 degrees C. >> >> I am still quite interesting where you get this information... >> > Primarily lots of online research. Windows tools usually support the > offsets, so screendumps help in some cases. > >>> >>>> [1] https://bugs.launchpad.net/bugs/1774817 >>> >>> The key here is the commit mentioned in the log (1b59788979acd). It does >>> not only adjust the per-CPU offset, but also takes a configurable offset >>> of 49 degrees C into account. You'll need to apply that patch in your >>> kernel, or the temperature may be off by 49 degrees C. >> >> So unless AMD shares these offsets value, we can never know what correct >> offsets are? >> > Unfortunately that is correct. > > AFAIK the information is available from AMD under NDA. I can not sign such an > NDA, and even if I could and would, I could not use the information in an open > source driver. Kind of a loose-loose situation. If you (Canonical) have any > influence at AMD, it might be useful to let them know that their policy is > not very helpful. > > Guenter > > >> Kai-Heng >> >>> >>> Hope this helps. If not, please let me know. Note that I am travelling; >>> responses may be delayed. >>> >>> Guenter >> >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html > -- > To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
