"*ERROR* H2G CTB (all sizes in DW):" during boot
The ERROR report show up in kernel log from time to time. The first one once the login screen shows up. The timeouts show up frequently. The attached dmesg is cut after a while, limited to DRM/XE output. This is
00:02.0 VGA compatible controller: Intel Corporation TigerLake-LP GT2 [Iris Xe Graphics] (rev 01)
(8086:9a49) 11th Gen Intel(R) Core(TM) i7-1165G7 platform.