| Bug ID | 94973 |
|---|---|
| Summary | R9 380X (Tonga) SMC failure with pcie_dpm_key_disabled=0 |
| Product | DRI |
| Version | unspecified |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | DRM/AMDgpu |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | jay@jcornwall.me |
Created attachment 123000 [details]
dmesg from drm-fixes-4.6
HW is R9 380X in primary PCIe 3 slot on ASUS P8B75-V with three monitors
attached (2x DVI and 1 HDMI).
First observed in 4.5 when Powerplay was enabled by default. Trace of SMC
messages around failure from drm-fixes-4.6 kernel:
[ 9.666775] tonga_send_msg_to_smc(..., 0x145)
[ 9.666799] tonga_send_msg_to_smc(..., 0x146)
[ 9.666875] tonga_send_msg_to_smc(..., 0x5E)
[ 9.666895] tonga_send_msg_to_smc(..., 0x148)
[ 9.667775] tonga_send_msg_to_smc(..., 0x145)
[ 9.667800] tonga_send_msg_to_smc(..., 0x146)
[ 9.774079] [drm] fb mappable at 0xE0BAA000
[ 9.774083] [drm] vram apper at 0xE0000000
[ 9.774085] [drm] size 9216000
[ 9.774087] [drm] fb depth is 24
[ 9.774089] [drm] pitch is 7680
[ 9.774213] fbcon: amdgpudrmfb (fb0) is primary device
[ 9.774345] tonga_send_msg_to_smc(..., 0x5E)
[ 9.943267] Failed to send Message.
[ 10.112239] tonga_send_msg_to_smc(..., 0x145)
Other Powerplay functionality works correctly with pcie_dpm_key_disabled=1.
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