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Date: Sun, 31 Oct 2021 03:01:09 +0000 From: Ken Moffat <zarniwhoop@...world.com> To: Alex Deucher <alexander.deucher@....com>, Yifan Zhang <yifan1.zhang@....com>, James Zhu <James.Zhu@....com> Cc: Felix Kuehling <Felix.Kuehling@....com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: amdgpu hang on picasso On Sat, Oct 30, 2021 at 07:52:28PM +0100, Ken Moffat wrote: > When I tried 5.15-rc7 on my picasso APU (Ryzen 5 3400G), trying to > run 'startx' (I'm using X11 and logging in to a tty) the output > messages from X11 stopped after a few lines (normally, the desktop > shows before I can read anything) and keyboard/mouse were > inoperative - had to use Magic SysRQ to sync and reboot. > > The log showed > Oct 28 03:02:21 deluxe klogd: [ 31.347235] amdgpu 0000:09:00.0: amdgpu: failed to write reg 28b4 wait reg 28c6 > Oct 28 03:02:34 deluxe klogd: [ 44.280185] amdgpu 0000:09:00.0: amdgpu: failed to write reg 1a6f4 wait reg 1a706 > > I started bisecting after confireming that linus' tree with head at > f25a5481af12 still showed the problem. That identified the > following commit, which reverts cleanly and allows Xorg to start: > > commit 714d9e4574d54596973ee3b0624ee4a16264d700 > Author: Yifan Zhang <yifan1.zhang@....com> > Date: Tue Sep 28 15:42:35 2021 +0800 > > drm/amdgpu: init iommu after amdkfd device init > > This patch is to fix clinfo failure in Raven/Picasso: > > Number of platforms: 1 > Platform Profile: FULL_PROFILE > Platform Version: OpenCL 2.2 AMD-APP (3364.0) > Platform Name: AMD Accelerated Parallel Processing > Platform Vendor: Advanced Micro Devices, Inc. > Platform Extensions: cl_khr_icd cl_amd_event_callback > > Platform Name: AMD Accelerated Parallel Processing Number of devices: 0 > > Signed-off-by: Yifan Zhang <yifan1.zhang@....com> > Reviewed-by: James Zhu <James.Zhu@....com> > Tested-by: James Zhu <James.Zhu@....com> > Acked-by: Felix Kuehling <Felix.Kuehling@....com> > Signed-off-by: Alex Deucher <alexander.deucher@....com> > > drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > I've got a laptop with raven, I'll try to find time to test it that > also shows he problem in the next few days. > The laptop (AMD Ryzen 5 2500U with Radeon Vega Mobile Gfx) works fine without reverting that patch, only the picasso has the problem. ĸen -- A capitalist society is one where individuals own and acquire property, at least for a few months until cooler objects come out. -- Late Night Mash
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