https://bugs.freedesktop.org/show_bug.cgi?id=100395
--- Comment #5 from Andy Furniss adf.lists@gmail.com --- Seems, I've found it. Many skips to work around vega build issues, but I got past them and got a bad then good.
Further skips then due to startx hangs with dmesg logging ring test fails on 3 to 8.
Fortunately it then worked and only gave two choices one vega and -
possible first bad commit: [91561a39fa74e79b88e0e9d70f3072501c8df2ce] drm/amdgpu: get display info from DC when DC enabled.
This cleanly reverts from head - and the issue is gone with it reverted.
# skip: [4513c8c07e243b77a36192a3c49845f85a656cea] drm/amd/display: Remove DCE12 guards git bisect skip 4513c8c07e243b77a36192a3c49845f85a656cea # bad: [76cfd18b173dd61d24de2c28fa92443fcfe165d8] drm/amdgpu: gart fixes for vega10 git bisect bad 76cfd18b173dd61d24de2c28fa92443fcfe165d8 # good: [6c59cf82dac54970284b3126ff9a15b6b0de6108] drm/amdgpu: add vega10 chip name git bisect good 6c59cf82dac54970284b3126ff9a15b6b0de6108 # skip: [9a493aa52c3a5176acd7b8ec32b66dc58bded8b2] drm/amdgpu: use atomfirmware interfaces for scratch reg save/restore git bisect skip 9a493aa52c3a5176acd7b8ec32b66dc58bded8b2 # skip: [d0a2e62fca3e502951bd1eb392e5331ad80dc88c] drm/amdgpu: add IV trace point git bisect skip d0a2e62fca3e502951bd1eb392e5331ad80dc88c # skip: [40610a13a747afacb17fa2b9decfa8e5455671b4] drm/amdgpu: add 64bit doorbell assignments git bisect skip 40610a13a747afacb17fa2b9decfa8e5455671b4 # good: [d9693ee35fd55106b70bbd1dae9ce71b578ab3e9] drm/amdgpu: add psp firmware header info git bisect good d9693ee35fd55106b70bbd1dae9ce71b578ab3e9 # only skipped commits left to test # possible first bad commit: [76cfd18b173dd61d24de2c28fa92443fcfe165d8] drm/amdgpu: gart fixes for vega10 # possible first bad commit: [91561a39fa74e79b88e0e9d70f3072501c8df2ce] drm/amdgpu: get display info from DC when DC enabled.