In the afternoon, I decided to look at dmesg.
There:
25.729785] rockchip-drm display-subsystem: swiotlb buffer is full (sz: 7307264 bytes), total 32768 (slots), used 11243 (slots)
[ 25.734888] rockchip-drm display-subsystem: swiotlb buffer is full (sz: 1740800 bytes), total 32768 (slots), used 9297 (slots)
[ 26.197594] rockchip-drm display-subsystem: swiotlb buffer is full (sz: 1150976 bytes), total 32768 (slots), used 10017 (slots)
[ 26.875802] rockchip-drm display-subsystem: swiotlb buffer is full (sz: 7307264 bytes), total 32768 (slots), used 11243 (slots)
[ 26.884778] rockchip-drm display-subsystem: swiotlb buffer is full (sz: 2097152 bytes), total 32768 (slots), used 11759 (slots)
[ 27.976904] swiotlb_tbl_map_single: 1 callbacks suppressed
[ 27.976917] rockchip-drm display-subsystem: swiotlb buffer is full (sz: 2940928 bytes), total 32768 (slots), used 9787 (slots)
[ 28.798413] rockchip-drm display-subsystem: swiotlb buffer is full (sz: 438272 bytes), total 32768 (slots), used 9819 (slots)
[ 30.420185] rockchip-drm display-subsystem: swiotlb buffer is full (sz: 7307264 bytes), total 32768 (slots), used 11735 (slots)
[ 30.423002] rockchip-drm display-subsystem: swiotlb buffer is full (sz: 1642496 bytes), total 32768 (slots), used 9841 (slots)
[ 99.648400] rockchip-drm display-subsystem: [drm] *ERROR* vp0 Cluster1-win0 actual_w[30] not 4 pixel aligned
[ 99.665159] rockchip-drm display-subsystem: [drm] *ERROR* vp0 Cluster1-win0 actual_w[29] not 4 pixel aligned
[ 99.681872] rockchip-drm display-subsystem: [drm] *ERROR* vp0 Cluster1-win0 actual_w[25] not 4 pixel aligned
and there:
911.698942] rockchip-drm display-subsystem: [drm] *ERROR* vp0 Cluster1-win0 actual_w[22] not 4 pixel aligned
[ 911.715603] rockchip-drm display-subsystem: [drm] *ERROR* vp0 Cluster1-win0 actual_w[21] not 4 pixel aligned
[ 912.032227] rockchip-drm display-subsystem: [drm] *ERROR* vp0 Cluster1-win0 actual_w[21] not 4 pixel aligned
[ 912.065671] rockchip-drm display-subsystem: [drm] *ERROR* vp0 Cluster1-win0 actual_w[26] not 4 pixel aligned
root@orangepi5-plus:/etc/default# dmesg | grep -i "swiotlb"
# Nameless -ah
Linux orangepi5-plus 6.12.44-current-rockchip64 #1 OUTPUTS SMP, August 28, 14:31:16 UTC 2025 aarch64 aarch64 aarch64 GNU/Linux at 14:00 local time.
# cat /boot/armbianEnv.txt
verbosity=1
bootlogo=true
console=both
overlay_prefix=rockchip-rk3588
fdtfile=rockchip/rk3588-orangepi-5-plus.dtb
rootdev=UUID=e08e0355-09a7-41ad-a6db-fa17566a7f12
rootfstype=ext4
usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u
How to fix it?