Comment 34 for bug 1910562

I've made the same tests with mainline kernel '5.12.4-051204-generic #202105140931 SMP Fri May 14 09:35:44 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux' and the results are the same, i.e. sensors command stopping when reaching amd section and this error message showing in dmesg:

[ 65.636330] [drm] PCIE GART of 256M enabled (table at 0x000000F400000000).
[ 67.104101] [drm:dce110_edp_wait_for_hpd_ready [amdgpu]] *ERROR* dce110_edp_wait_for_hpd_ready: wait timed out!
[ 67.704167] [drm:dce110_edp_wait_for_hpd_ready [amdgpu]] *ERROR* dce110_edp_wait_for_hpd_ready: wait timed out!
[ 67.735924] [drm] UVD and UVD ENC initialized successfully.
[ 67.845908] [drm] VCE initialized successfully.
[ 67.850738] amdgpu 0000:01:00.0: [drm] Cannot find any crtc or sizes
[ 68.144823] drm_dp_i2c_do_msg: 2 callbacks suppressed
[ 68.241327] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
[ 68.241388] [drm:lspcon_resume [i915]] *ERROR* LSPCON init failed on port D
[ 68.893269] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
[ 68.893321] [drm:lspcon_resume [i915]] *ERROR* LSPCON init failed on port D

So the problem is not Ubuntu related.