https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263557

--- Comment #12 from Patrick Mackinlay <freebsd.68...@nospam.spacesurfer.com> 
---
(In reply to Graham Perrin from comment #11)

At some point during the upgrade it did install a whole bunch of gpu-firmware-*
packages, including

gpu-firmware-intel-kmod-tigerlake-20220511

/var/run/dmesg.boot reports

i915/tgl_dmc_ver2_08.bin: could not load firmware image, error 2
i915_tgl_dmc_ver2_08.bin: could not load firmware image, error 2
firmware: 'i915_tgl_dmc_ver2_08_bin' version 0: 18932 bytes loaded at
0xffffffff84293000
drmn0: successfully loaded firmware image 'i915/tgl_dmc_ver2_08.bin'
drmn0: [drm] Finished loading DMC firmware i915/tgl_dmc_ver2_08.bin (v2.8)
...
[drm] Initialized i915 1.6.0 20200917 for drmn0 on minor 0


I do also get a bunch of system message errors after using the laptop for a
bit:

drmn0: [drm] *ERROR* Atomic update failure on pipe A (start=10447 end=10448)
time 2142 us, min 1987, max 1999, scanline start 1946, end 43
drmn0: [drm] *ERROR* Atomic update failure on pipe A (start=13058 end=13059)
time 1253 us, min 1987, max 1999, scanline start 1900, end 2002
drmn0: [drm] *ERROR* Atomic update failure on pipe A (start=15278 end=15279)
time 1428 us, min 1987, max 1999, scanline start 1944, end 61
drmn0: [drm] *ERROR* Atomic update failure on pipe A (start=20888 end=20889)
time 899 us, min 1987, max 1999, scanline start 1981, end 76
drmn0: [drm] *ERROR* Atomic update failure on pipe A (start=22988 end=22989)
time 974 us, min 1987, max 1999, scanline start 1944, end 38
drmn0: [drm] *ERROR* Atomic update failure on pipe A (start=24818 end=24819)
time 2019 us, min 1987, max 1999, scanline start 1900, end 2050
drmn0: [drm] *ERROR* Atomic update failure on pipe A (start=25208 end=25209)
time 1251 us, min 1987, max 1999, scanline start 1881, end 2036
drmn0: [drm] *ERROR* Atomic update failure on pipe A (start=25358 end=25359)
time 1455 us, min 1987, max 1999, scanline start 1884, end 2023
drmn0: [drm] *ERROR* Atomic update failure on pipe A (start=27458 end=27459)
time 1372 us, min 1987, max 1999, scanline start 1879, end 2047
drmn0: [drm] *ERROR* Atomic update failure on pipe A (start=30518 end=30519)
time 688 us, min 1987, max 1999, scanline start 1962, end 73
drmn0: [drm] *ERROR* Atomic update failure on pipe A (start=30968 end=30969)
time 1276 us, min 1987, max 1999, scanline start 1857, end 2008
drmn0: [drm] *ERROR* Atomic update failure on pipe A (start=31028 end=31029)
time 1605 us, min 1987, max 1999, scanline start 1835, end 2004
drmn0: [drm] *ERROR* Atomic update failure on pipe A (start=31508 end=31509)
time 2099 us, min 1987, max 1999, scanline start 1921, end 24

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