With 4.8.0-rc1 the kernel always panics on s2ram. Before with kernel 4.7.0-ARCH-13902-gd491e80 it was suspending and awaking o.k. (if not to speak of the screen staying sometimes black). Tested successfully with 4.8.0-rc1: echo freezer, devices, platform, processor, core >pm_test Evokes the backtrace: echo mem >/sys/power/state booted with nouveau.blacklist=1 and no_console_suspend into /bin/bash.
Created attachment 229271 [details] screenshot of the backtrace
On Thursday, August 18, 2016 07:45:38 PM bugzilla-daemon@bugzilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=153361 > > --- Comment #1 from Elmar Stellnberger <estellnb@elstel.org> --- > Created attachment 229271 [details] > --> https://bugzilla.kernel.org/attachment.cgi?id=229271&action=edit > screenshot of the backtrace Looks like a CPU offline/online problem. Does it panic during suspend or during resume?
It panics before going into suspend.
good: 4.7.0-ARCH-13902-gd491e80 bad: 4.8.0-rc1 bad: g1c88e19
Today we all have reason to celebrate! This bug as well as kernel bugs 153371, 117581 and freedesktop bug 93887 (https://bugs.freedesktop.org/show_bug.cgi?id=93887) have in deed been resolved with commit 65ea11ec6a82b1d44aba62b59e9eb20247e57c6e (Ville Syrjälä - x86/hweight: Don't clobber %rdi) - and these were just the issues reported by me - not to count numerous others (of which Mark Asselstine has been talking about to me) ...