<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> Sorry missed the gfx ring in the reply. Um what kernel version? Is this the latest umr? Maybe capture a trace of umr to see what is happening. It works just fine on my raven1. Tom <div class="gmail_quote">On December 19, 2018 3:21:25 PM EST, "Grodzovsky, Andrey" <Andrey.Grodzovsky@amd.com> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> <pre class="k9mail">+Tom Andrey On 12/19/2018 01:35 PM, Mikhail Gavrilov wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #729fcf; padding-left: 1ex;">On Tue, 18 Dec 2018 at 00:08, Grodzovsky, Andrey <Andrey.Grodzovsky@amd.com> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #ad7fa8; padding-left: 1ex;"> Please install UMR and dump gfx ring content and waves after the hang is happening. UMR at - <a href="https://cgit.freedesktop.org/amd/umr/">https://cgit.freedesktop.org/amd/umr/</a> Waves dump sudo umr -O verbose,halt_waves -wa GFX ring dump sudo umr -O verbose,follow -R gfx[.] Andrey </blockquote> Thanks for respond. What options should I specify in kernel command line? On my setup `umr` terminated with message `Could not open ring debugfs file` and crashes. But I am sure that debugfs enabled. $ sudo umr -O verbose,halt_waves -wa Cannot seek to MMIO address: Bad file descriptor [ERROR]: Could not open ring debugfs fileSegmentation fault # ls /sys/kernel/debug/dri/0/ amdgpu_dm_dtn_log amdgpu_ring_comp_1.1.0 amdgpu_vram_mm amdgpu_evict_gtt amdgpu_ring_comp_1.1.1 amdgpu_wave amdgpu_evict_vram amdgpu_ring_comp_1.2.0 clients amdgpu_fence_info amdgpu_ring_comp_1.2.1 crtc-0 amdgpu_firmware_info amdgpu_ring_comp_1.3.0 crtc-1 amdgpu_gca_config amdgpu_ring_comp_1.3.1 crtc-2 amdgpu_gds_mm amdgpu_ring_gfx crtc-3 amdgpu_gem_info amdgpu_ring_kiq_2.1.0 crtc-4 amdgpu_gpr amdgpu_ring_sdma0 crtc-5 amdgpu_gpu_recover amdgpu_ring_sdma1 DP-1 amdgpu_gtt_mm 'amdgpu_ring_uvd<0>' DP-2 amdgpu_gws_mm 'amdgpu_ring_uvd_enc0<0>' DP-3 amdgpu_iomem 'amdgpu_ring_uvd_enc1<0>' framebuffer amdgpu_oa_mm amdgpu_ring_vce0 gem_names amdgpu_pm_info amdgpu_ring_vce1 HDMI-A-1 amdgpu_regs amdgpu_ring_vce2 HDMI-A-2 amdgpu_regs_didt amdgpu_sa_info HDMI-A-3 amdgpu_regs_pcie amdgpu_sensors internal_clients amdgpu_regs_smc amdgpu_test_ib name amdgpu_ring_comp_1.0.0 amdgpu_vbios state amdgpu_ring_comp_1.0.1 amdgpu_vram ttm_page_pool -- Best Regards, Mike Gavrilov. </blockquote> </pre> </blockquote> </div> </body> </html>