[Bug 247416] x11-servers/xorg-server: DRI2 fails on AMD Polaris 10

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=247416

--- Comment #8 from Adam Jimerson <vendion at gmail.com> ---
Thanks for your assistance in looking to this Jan, picom was working up until
yesterday when I did a `pkg upgrade` so I know that my hardware and driver
supports OpenGL acceleration. Worst case I roll back my ZFS pool to a snapshot
from before I did that update and go from there...

(In reply to Jan Beich from comment #6)

> Can you show "dmesg" output?

Sure I'll grab that and attach it here

> If you have amdgpu_load=YES in /boot/loader.conf convert to kld_list=amdgpu in /etc/rc.conf. Modern GPUs need to load firmware which may not work from loader(8).

That is already set in my /etc/rc.conf per the post-install message of
drm-fbsd12.0-kmod and the kernel modules are getting loaded on boot

 6    1 0xffffffff82f11000   25b3cc amdgpu.ko
12    1 0xffffffff8321b000     8160 amdgpu_polaris10_mc_bin.ko
13    1 0xffffffff83224000     4420 amdgpu_polaris10_pfp_2_bin.ko
14    1 0xffffffff83229000     4418 amdgpu_polaris10_me_2_bin.ko
15    1 0xffffffff8322e000     2418 amdgpu_polaris10_ce_2_bin.ko
16    1 0xffffffff83231000     5d40 amdgpu_polaris10_rlc_bin.ko
17    1 0xffffffff83237000    40430 amdgpu_polaris10_mec_2_bin.ko
18    1 0xffffffff83278000    40430 amdgpu_polaris10_mec2_2_bin.ko
19    1 0xffffffff832b9000     3318 amdgpu_polaris10_sdma_bin.ko
20    1 0xffffffff832bd000     3320 amdgpu_polaris10_sdma1_bin.ko
21    1 0xffffffff832c1000    5bc00 amdgpu_polaris10_uvd_bin.ko
22    1 0xffffffff8331d000    28d20 amdgpu_polaris10_vce_bin.ko
23    1 0xffffffff83346000    1fe50 amdgpu_polaris10_k_smc_bin.ko

> xf86-video-vesa doesn't support OpenGL acceleration. Maybe deinstall all xf86-video-* except xf86-video-amdgpu to facilitate debugging.

Sure I can do that, I only had that installed temperately anyways when I got
this graphics card for basic tests and meant to remove it afterwards.

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