On Thu, Apr 06, 2023 at 05:39:07PM +0200, Rainer Fiebig wrote: > Am 06.04.23 um 15:30 schrieb Linux regression tracking (Thorsten Leemhuis): > > [CCing the regression list, as it should be in the loop for regressions: > > https://docs.kernel.org/admin-guide/reporting-regressions.html] > > > > On 06.04.23 14:06, Rainer Fiebig wrote: > >> Hi! Since kernel 6.1.22 starting a resume from hibernate by hitting a > >> key on the keyboard fails. However, if the PC was switched off and on > >> again (or reset), the resume is OK. The APU is a Ryzen 5600G. > >> > >> Bisecting between 6.1.21/22 turned up this: > >> > >> > >> Author: Tim Huang <tim.huang@xxxxxxx> > >> Date: Thu Mar 9 16:27:51 2023 +0800 > >> > >> drm/amdgpu: skip ASIC reset for APUs when go to S4 > >> > >> commit b589626674de94d977e81c99bf7905872b991197 upstream. > >> > >> For GC IP v11.0.4/11, PSP TMR need to be reserved > >> for ASIC mode2 reset. But for S4, when psp suspend, > >> it will destroy the TMR that fails the ASIC reset. > >> [...] > >> > >> > >> Reverting the commit solves the problem. > >> Thanks. > > > > Please try 6.1.23 and report back, because from the thread > > https://lore.kernel.org/all/20230330160740.1dbff94b@schienar/ > > it sounds a lot like "drm/amdgpu: allow more APUs to do mode2 reset when > > go to S4" might be fixing this, which went into 6.1.23. > Yes, 6.1.23 seems OK so far. > > I think, however, that rc-kernels and LTS-kernels are different matters. > With a bleeding edge kernel, problems are to be expected. But an > LTS-kernel is chosen for stability. And this is the second time within > just a few weeks that I've been bitten by a time-consuming hibernate-bug > caused by a backport of a commit in amdgpu. > > So I'm asking the devs to either test their patches more thoroughly or > to be a bit more conservative with what they recommend for backporting > to LTS-kernels. Thanks. Please feel free to suggest better ways to have automated tests for stuff like this, or to help provide testing for the -rc LTS/stable kernel releases. We can't do this alone :) thanks, greg k-h
