Created attachment 139092 [details] Full dmesg [ 33.420520] Call Trace: [ 33.420523] [c000200724883570] [c000000000ad0e14] dump_stack+0xb4/0x100 (unreliable) [ 33.420527] [c0002007248835b0] [c00000000002be78] eeh_dev_check_failure+0x558/0x580 [ 33.420529] [c000200724883660] [c00000000002bf24] eeh_check_failure+0x84/0xd0 [ 33.420549] [c0002007248836a0] [c008000008731864] amdgpu_mm_rreg+0x9c/0x1b0 [amdgpu] [ 33.420566] [c0002007248836f0] [c0080000087ca9fc] amdgpu_si_send_msg_to_smc+0x94/0x100 [amdgpu] [ 33.420582] [c000200724883720] [c0080000087c267c] si_thermal_enable_alert+0x64/0x100 [amdgpu] [ 33.420599] [c000200724883790] [c0080000087c9e48] si_dpm_enable+0x3540/0x3900 [amdgpu] [ 33.420616] [c0002007248838c0] [c0080000087ca34c] si_dpm_hw_init+0x74/0xd0 [amdgpu] [ 33.420633] [c000200724883900] [c0080000087e3e98] amdgpu_pp_hw_init+0x50/0x90 [amdgpu] [ 33.420645] [c000200724883930] [c008000008734098] amdgpu_device_init+0xf30/0x1520 [amdgpu] [ 33.420657] [c000200724883a30] [c008000008737f4c] amdgpu_driver_load_kms+0xa4/0x280 [amdgpu] [ 33.420664] [c000200724883ab0] [c008000007aba32c] drm_dev_register+0x1c4/0x280 [drm] [ 33.420676] [c000200724883b50] [c008000008730778] amdgpu_pci_probe+0x120/0x250 [amdgpu] [ 33.420679] [c000200724883bd0] [c000000000625f04] local_pci_probe+0x64/0x130 [ 33.420681] [c000200724883c60] [c0000000000cf360] work_for_cpu_fn+0x30/0x50 [ 33.420683] [c000200724883c90] [c0000000000d3144] process_one_work+0x284/0x470 [ 33.420685] [c000200724883d20] [c0000000000d3600] worker_thread+0x2d0/0x610 [ 33.420688] [c000200724883dc0] [c0000000000dbd8c] kthread+0x19c/0x1b0 [ 33.420690] [c000200724883e30] [c00000000000b594] ret_from_kernel_thread+0x5c/0xc8
Does it work on x86?
Never tried amdgpu on x86.
It did work with the "radeon" driver on x86, and *mostly* works with "radeon" on POWER9 as well (except that it limits itself to 32-bit DMA for some reason, and eventually crashes when I bump up against the allocation limit; to workaround that, I am currently using the fbdev Xorg driver with the radeon kernel driver).
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