[PATCH 0/1][SRU][U/H/OEM-5.10/OEM-5.13] UBUNTU: SAUCE: AMDGPU: Fix System hang after resume from suspend

Koba Ko koba.ko at canonical.com
Tue Aug 17 03:33:18 UTC 2021

BugLink: https://bugs.launchpad.net/bugs/1940204

With AMD-GPU and don't use it as a display output,
After multiple Suspend&resume, system would hang.

Disable BACO for polaris12 series.
BACO allow the graphics cards on Linux to support S4 / hibernation support.

[Test Case]
1. Must plug AMD GPU and don't use it as display output
2. Plug DP/HDMI on iGPU.
3. Suspend&resume machine.
4. check if system hangs.

[Where problems could occur]
Disable BACO would cause higher power consumption.

Evan Quan (1):
  drm/amdgpu: disable BACO support for 699F:C7 polaris12 SKU temporarily

 drivers/gpu/drm/amd/amdgpu/vi.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)


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