Can we please narrow down exactly when it started, so far I got from this thread this:
raspberrypi-bootloader 20210805-1 --ok--
raspberrypi-bootloader 20210818-2 --maybe ok--
raspberrypi-bootloader 20210823-1 --faulty--
raspberrypi-bootloader 20210901-1 --faulty--
raspberrypi-bootloader-20210914-3 --faulty--
For the bootloader I found these changes:
https://github.com/raspberrypi/firmware ... aster/boot$this->bbcode_second_pass_code('', '
Commits on Aug 25, 2021 kernel: drm/vc4: hdmi: Remove the DDC probing for status detection
https://github.com/raspberrypi/firmware/commit/24f05a6e0eadcf001159e3618759cfb51761fd0e#diff-4509beb0ab401d71fa4a5cd94a55c9a74f13332776ae4019c5bfc4c2005157ff
Commits on Aug 23, 2021 kernel: Bump to 5.10.60
https://github.com/raspberrypi/firmware/commit/beb94b22c0e7dfc3a62dc941a24f1230edd1eba0#diff-4509beb0ab401d71fa4a5cd94a55c9a74f13332776ae4019c5bfc4c2005157ff
Commits on Aug 19, 2021 kernel: overlays: rpi-poe-plus: Improve the cooling levels
https://github.com/raspberrypi/firmware/commit/25e2b597ebfb2495eab4816a276758dcc6ea21f1#diff-4509beb0ab401d71fa4a5cd94a55c9a74f13332776ae4019c5bfc4c2005157ff
Commits on Aug 18, 2021 firmware: arm_loader: Make most arm clock requests required
https://github.com/raspberrypi/firmware/commit/69cfd9f03a2b4aab6aec021328be9355d1dad1db#diff-4509beb0ab401d71fa4a5cd94a55c9a74f13332776ae4019c5bfc4c2005157ff
Commits on Aug 18, 2021 kernel: Bump to 5.10.59
https://github.com/raspberrypi/firmware/commit/e3234b68ec227d0fa8e3f31c56f1370b1c2af880#diff-4509beb0ab401d71fa4a5cd94a55c9a74f13332776ae4019c5bfc4c2005157ff
Commits on Aug 17, 2021 kernel: xhci: guard accesses to ep_state in xhci_endpoint_reset()
https://github.com/raspberrypi/firmware/commit/970b4ba6c8379fb4f8544155a4e304bbc79177c9#diff-4509beb0ab401d71fa4a5cd94a55c9a74f13332776ae4019c5bfc4c2005157ff
Commits on Aug 12, 2021 kernel: usb: xhci: workaround for bogus SET_DEQ_PENDING endpoint state
https://github.com/raspberrypi/firmware/commit/a2f8526fda785a11ea3f2ddfa6724c8bd3049ef7#diff-4509beb0ab401d71fa4a5cd94a55c9a74f13332776ae4019c5bfc4c2005157ff
Commits on Aug 11, 2021 kernel: Revert mm/shmem: fix shmem_swapin() race with swapoff
https://github.com/raspberrypi/firmware/commit/5bcc8bcdb357e0d3600609077aaf8cf24c60ce1a#diff-4509beb0ab401d71fa4a5cd94a55c9a74f13332776ae4019c5bfc4c2005157ff
Commits on Aug 5, 2021 firmware: video_decode: Use the ISP instead of vc_image_convert
https://github.com/raspberrypi/firmware/commit/a51c6008766ecd928d774dafc5eefe88a4f9bf75#diff-4509beb0ab401d71fa4a5cd94a55c9a74f13332776ae4019c5bfc4c2005157ff
')
There are two big kernel Bump in this timeline which makes it more difficult. So the exact time when the issue started would be helpfull.