On pátek 24. listopadu 2017 12:25:43 CET Pali Rohár wrote: > On Friday 24 November 2017 12:17:30 Oleksandr Natalenko wrote: > > > There are two patches waiting to be tested in > > > https://bugzilla.kernel.org/show_bug.cgi?id=195751 > > > > Tested and attached a couple of patches on top of those to the BZ. If > > disabling fan control is the only approach here, I can confirm that this > > works. > > Hi! Please figure out which SMM call (they are identified by eax and ebx > registers) cause this freeze. So we would now what needs to be > blacklisted.
Here it goes: [ 7.191081] dell_smm_hwmon: smm(0x10a3 0x0000) = 0x002e (took 1837 usecs) [ 7.194007] dell_smm_hwmon: smm(0x00a3 0x0001) = 0xffff (took 151 usecs) [ 7.198239] dell_smm_hwmon: smm(0x00a3 0x0000) = 0x0002 (took 1411 usecs) [ 7.199095] dell_smm_hwmon: smm(0x02a3 0x0001) = 0xffff (took 71 usecs) [ 7.700493] dell_smm_hwmon: smm(0x02a3 0x0000) = 0x157c (took 488912 usecs) [ 7.701277] dell_smm_hwmon: smm(0x0025 0X0000) = 0xffff (took 71 usecs) 0x02a3 is I8K_SMM_GET_SPEED.
