Just an update: Kind of hoped some improvement with flickering with new kernel version update, but behavior has not changed so far…
shigeru@mntpr-0:~$ sudo reform-check
I: Contents of /proc/device-tree/model: MNT Pocket Reform with i.MX8MP Module
I: `uname -a` output: Linux mntpr-0 6.15.6-mnt-reform-arm64 #1 SMP Debian 6.15.6-1~exp1+reform20250713T202422Z (2025-07-13) aarch64 GNU/Linux
I: Version of linux-image-mnt-reform-arm64: 6.15.6-1~exp1+reform20250713T202422Z
I: Version of reform-tools: 1.75-2+reform20250622T103710Z+1
I: Mount source of /: /dev/reformvg/root (LVM vg 'reformvg' on LUKS device 'reform_crypt' on SSD)
I: Mount source of /boot: /dev/mmcblk2p1 (eMMC)
E: Your /etc/skel/.profile contains an outdated line that attempts to print /etc/reform-help or run reform-help.
E: Consider simply deleting that offending last line of your /etc/skel/.profile.
I: the following files differ from how they are shipped by reform-tools (ignore /var/lib/alsa/asound.state):
??5?????? /var/lib/alsa/asound.state