On Sun, Jan 15, 2017 at 11:58:30AM +0100, Greg Kroah-Hartman wrote: > On Sun, Jan 15, 2017 at 07:19:03AM +0000, Winkler, Tomas wrote: > > > Subject: Re: [char-misc for 4.10-rc4 V2] mei: bus: enable OS version only > > > for SPT > > > and newer > > > > > > On Sat, Jan 14, 2017 at 08:27:31PM +0100, Paul Menzel wrote: > > > > Dear Greg, > > > > > > > > > > > > On 2017-01-13 14:00, Greg Kroah-Hartman wrote: > > > > > On Wed, Jan 11, 2017 at 03:26:06PM +0100, Paul Menzel wrote: > > > > > > > > > > On 01/11/17 15:12, Winkler, Tomas wrote: > > > > > > > > > > > > > > > On 01/11/17 10:24, Winkler, Tomas wrote: > > > > > > > > > > > > > > > > > > > > > > On Wed, Jan 11, 2017 at 01:27:21AM +0200, Tomas Winkler > > > wrote: > > > > > > > > > > > > On older platforms the command should be just ignored > > > > > > > > > > > > by the firmware but some older platforms misbehave so > > > > > > > > > > > > it's safer to send the command only if required. > > > > > > > > > > > > > > > > > > > > > > Thanks! This fixes suspend-to-ram for me (on a Thinkpad > > > > > > > > > > > x201s). > > > > > > > > > > > > > > > > > > > > What about Dell XPS13? > > > > > > > > > > > > > > > > > > With Linus' master branch from today, and Greg's > > > > > > > > > char-misc-linus merged > > > > > > > > > (Merge: 807b93e995d1 546cf3ef9c92), the regression is still > > > > > > > > > there. > > > > > > > > > > > > > > > > Hmm, this should work on KBL.... > > > > > > > > > > > > > > > > > I am now building a Linux kernel image with the two commits > > > > > > > > > touching > > > > > > > > > `bus- fixup.c` reverted. > > > > > > > > > > > > > > > > Thanks for the effort. > > > > > > > > > > > > > > > > > Do you want me to open a separate bug report for that, or > > > > > > > > > continue debugging in the existing report [1], which is > > > > > > > > > currently > > > marked as resolved? > > > > > > > > > > > > > > > > Let's get some more data, shouldn't take long time. > > > > > > > > > > > > > > > > > > Do you have Kaby Lake devices sitting around for testing? > > > > > > > > > > > > > > > > We will of course try to reproduce the issue locally. > > > > > > > > > > > > > > Paul, currently we cannot reproduce this issue on Kaby Lake > > > > > > > platforms on our side, > > > > > > > > > > > > It looks like it’s a different issue. Reverting the two commits > > > > > > touching `bus-fixup.c`, did not help. > > > > > > > > > > > > > we would be great for more debug data from your side. > > > > > > > You can get more info by enabling mode debug logs > > > > > > > > > > > > > > echo -n 'module mei +lfp' > > > > > > > > /sys/kernel/debug/dynamic_debug/control > > > > > > > echo -n 'module mei_me +lfp' > > > > > > > > /sys/kernel/debug/dynamic_debug/control > > > > > > > > > > > > I am currently bisecting to find the culprit. 13 steps will take > > > > > > some time though. > > > > > > > > > > I can duplicate this on my laptop here as well :( > > > > > > > > Which system do you have? > > > > > > A Dell XPS13, don't know what cpu type it is, here's the output of one > > > cpu from > > > /proc/cpuinfo > > > > > > processor : 3 > > > vendor_id : GenuineIntel > > > cpu family : 6 > > > model : 78 > > > model name : Intel(R) Core(TM) i7-6560U CPU @ 2.20GHz > > > stepping : 3 > > > microcode : 0x8a > > > cpu MHz : 712.207 > > > cache size : 4096 KB > > > physical id : 0 > > > siblings : 4 > > > core id : 1 > > > cpu cores : 2 > > > apicid : 3 > > > initial apicid : 3 > > > fpu : yes > > > fpu_exception : yes > > > cpuid level : 22 > > > wp : yes > > > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge > > > mca > > > cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx > > > pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl > > > xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor > > > ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic > > > movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm > > > 3dnowprefetch epb intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase > > > tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt > > > xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify > > > hwp_act_window hwp_epp > > > bugs : > > > bogomips : 4419.34 > > > clflush size : 64 > > > cache_alignment : 64 > > > address sizes : 39 bits physical, 48 bits virtual > > > power management: > > > > > > > > Did you get anywhere with your bisection? > > > > > > > > Sorry, I replied to a different message with my status. > > > > > > > > Please see my status below. I’ll have access to the machine on Monday > > > again. > > > > > > > > ``` > > > > $ git bisect log > > > > git bisect start > > > > # good: [69973b830859bc6529a7a0468ba0d80ee5117826] Linux 4.9 git > > > > bisect good 69973b830859bc6529a7a0468ba0d80ee5117826 > > > > # good: [69973b830859bc6529a7a0468ba0d80ee5117826] Linux 4.9 git > > > > bisect good 69973b830859bc6529a7a0468ba0d80ee5117826 > > > > # bad: [a121103c922847ba5010819a3f250f1f7fc84ab8] Linux 4.10-rc3 git > > > > bisect bad a121103c922847ba5010819a3f250f1f7fc84ab8 > > > > # bad: [72cca7baf4fba777b8ab770b902cf2e08941773f] Merge tag > > > > 'staging-4.10-rc1' of > > > > git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging > > > > git bisect bad 72cca7baf4fba777b8ab770b902cf2e08941773f > > > > # good: [b8d2798f32785398fcd1c48ea80c0c6c5ab88537] Merge tag 'clk-for- > > > linus' > > > > of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux > > > > git bisect good b8d2798f32785398fcd1c48ea80c0c6c5ab88537 > > > > # good: [9439b3710df688d853eb6cb4851256f2c92b1797] Merge tag 'drm- > > > for-v4.10' > > > > of git://people.freedesktop.org/~airlied/linux > > > > git bisect good 9439b3710df688d853eb6cb4851256f2c92b1797 > > > > ``` > > > > > > > > > > You are close! I'll try bisection tomorrow if I have some spare time. > > > > > > thanks, > > > > Greg, is that same Laptop mode as Paul's, you've experience the issue on? > > It's the same model name, but as this model has been shipped with many > different CPU versions over the years, I'm not sure if it is the exact > same one.
Ok, 4.10-rc4 seems to have fixed this issue with me. I don't know what it was, but I can't duplicate it anymore. Paul, are you still having this issue? thanks, greg k-h
