On Tue, Nov 3, 2026 at 3:21 AM James Skillen <[email protected]> wrote: > > On Sat, 24 Oct 2026 18:21:09 +0200, Andre Eikmeyer wrote: > > The Radeon Pro 5300M and 5500M of the MacBookPro16,1 (Navi 14 boards > > 1002:7340/106b:0210 and 1002:7340/106b:020f) stop answering SMU messages > > as soon as UCLK switches into its third level. > > This is the hang reported in drm/amd issue 6005, which has the > umc_info analysis and test results from both boards: > > https://gitlab.freedesktop.org/drm/amd/-/work_items/6005 > > Could v2 carry a Closes: tag for it? > > I tested the patch on a MacBookPro16,1 with the Pro 5300M (1002:7340 > rev 0x43, 106b:0210, VBIOS 113-D32207P1-019), on linux-t2 7.2.11 (Arch > v7.2.11-arch1 plus the t2linux patches) with this patch on top. The > userspace pp_table upload from the issue was disabled for these boots, > so the corrected levels came from the patch alone.
Can you try this patch instead: https://patchwork.freedesktop.org/patch/765668/?series=174386&rev=2 Alex > > All at DPM auto unless noted: > > - both "UCLK level ..." lines at boot and again after every resume, > pp_dpm_mclk 95/496/598/736 > - forced pp_dpm_mclk switches through every level transition, idle > and under memtest_vulkan load (57 switches, every 3 s): all landed > - UCLK pinned at level 2 (598 MHz): llama.cpp benchmark and 180 s of > memtest_vulkan, no errors > - 60 min soak of llama.cpp runs with idle gaps, and 30 min of normal > desktop use with the soak running > - 8 deep suspend/resume cycles (rtcwake, lid, systemctl suspend) > > I ran these with the internal panel on the iGPU and again with the > Radeon driving it (apple-gmux force_igd=n). No "SMU: No response", GPU > reset, ring timeout or DC errors in any of them. With the stock driver, > level 2 hung within seconds. > > For the runs with the Radeon on the panel I also had > amdgpu.dcdebugmask=0x1. That is for a separate DC issue (the MPC pipe > split on the 3072x1920 eDP plane makes DRAM clock change unsupported, > so UCLK stays at the top level). It is not related to this patch and > I will report it separately. > > Tested-by: James Skillen <[email protected]> # MacBookPro16,1, Pro 5300M > (106b:0210) > > The testing above and this reply were prepared with help from > claude-opus-5-5; I have checked the results and the text. > > Thanks, > James
