System Environment: -------------------------------------------- Description : Kernel: (drm-intel-next-queued)50b44a449ff1a19712ebc36ffccf9ac0a68033bf Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Wed Jun 5 13:34:33 2013 +0200 drm/i915: clear DPLL reg when disabling i9xx dplls Bug detail Description: -------------------------------------------- System can suspend to disk successfully, but will reboot while resuming from S4 sporadically. This happens about 1 in 5 times. Reproduce step: -------------------------------------------- 1. booting up machine 2. echo disk > /sys/power/state --> system reboot
Wikipedia failed me, so what's a "Calpella" plaform? Also please attach dmesg with drm.debug=0xe for this machine (with all the boot messages).
Capella is the 5-series chipset, used by Arrandale (Ironlake GPU).
Ok, now I'm back in the game ;-) First things first: Is this a regression, or do older kernels (e.g. 3.9 or so) also sometimes randomly crash in resume?
(In reply to comment #1) > Wikipedia failed me, so what's a "Calpella" plaform? Also please attach Calpella and Piketon are both Ironlake platform, Calpella is a mobile platform and Piketon is a desktop platform. This S4 issue can reproduce on Calpella easily, about 1 in 3~5 times. I also did S4 syscles on Piketon about 30 times, but Piketon did it ok. That's why I marked the title "Calpella". ;-) > dmesg with drm.debug=0xe for this machine (with all the boot messages). I did try many times to get the boot messages but falied. Generally, we get messages through three ways: "dmesg", netconsole and serial port. These are my difficulties here: 1. Because the machine will reboot while this issue happens, so I can't get messages directly from "dmesg". 2. It's a S4 issue, and netconsole can't work. Because netconsole can't receive output info after machine resume from S4. 3. This mobile platform has no serial port, so we can't get messages from serial port.. So I don't know how to get the boot messages while this issue happens,;-( Do you have any advice?
(In reply to comment #3) > Ok, now I'm back in the game ;-) > > First things first: Is this a regression, or do older kernels (e.g. 3.9 or > so) also sometimes randomly crash in resume? I tried 3.9, 3.8 and 3.6 kernel but can't find a good commit.. It's very wired.. Here I describe the issue details: After suspend to S4 successfully, I press power button, then system begin to resume. In grub stage, I select one kernel, and now the machine will reboot again..
Oh, I just wanted to have dmesg from a normal boot so that we know a bit about the details of the machine. After S4 it seems to die too early to grab anything ...
Created attachment 82522 [details] boot dmesg
(In reply to comment #5) > (In reply to comment #3) > > Ok, now I'm back in the game ;-) > > > > First things first: Is this a regression, or do older kernels (e.g. 3.9 or > > so) also sometimes randomly crash in resume? > > I tried 3.9, 3.8 and 3.6 kernel but can't find a good commit.. It's very > wired.. > Here I describe the issue details: > After suspend to S4 successfully, I press power button, then system begin to > resume. In grub stage, I select one kernel, and now the machine will reboot > again.. Is this reproducible without i915 loaded?
(In reply to comment #8) > (In reply to comment #5) > > (In reply to comment #3) > > > Ok, now I'm back in the game ;-) > > > > > > First things first: Is this a regression, or do older kernels (e.g. 3.9 or > > > so) also sometimes randomly crash in resume? > > > > I tried 3.9, 3.8 and 3.6 kernel but can't find a good commit.. It's very > > wired.. > > Here I describe the issue details: > > After suspend to S4 successfully, I press power button, then system begin to > > resume. In grub stage, I select one kernel, and now the machine will reboot > > again.. > > Is this reproducible without i915 loaded? Yes, this issue also exist without i915 loaded. The machine will probably reboot when resume from S4, I tried the reliability test of S4 two times, the first time failed at 5th round , the second time failed at 2nd round.
(In reply to comment #9) > > Is this reproducible without i915 loaded? > > Yes, this issue also exist without i915 loaded. The machine will probably > reboot when resume from S4, I tried the reliability test of S4 two times, > the first time failed at 5th round , the second time failed at 2nd round. Reproducible without our driver -> NOTOURBUG. Please report this, uhm, wherever is the appropriate place... bugzilla.kernel.org or lkml.
I find this issue also exists on Baytrail machine.
Tracked this issue as not gfx driver's bug at https://bugzilla.kernel.org/show_bug.cgi?id=60804
Closing old verified.
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