Is this your SD card? This is your eMMC just 3.6G in size. This is the first time I have met this variant. We need to think about whether it is possible to add an exception for this case.

df -h Filesystem Size Used Avail Use% Mounted on udev 159M 0 159M 0% /dev tmpfs 47M 4.8M 42M 11% /run /dev/mmcblk1p1 58G 3.4G 53G 7% / tmpfs 234M 76K 233M 1% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 234M 4.0K 234M 1% /tmp /dev/zram1 47M 2.4M 42M 6% /var/log /dev/mmcblk0p1 3.4G 2.0G 1.3G 62% /media/emmc tmpfs 47M 0 47M 0% /run/user/0 lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS mmcblk1 179:0 0 59.6G 0 disk └─mmcblk1p1 179:1 0 59G 0 part /var/log.hdd / mmcblk0 179:32 0 3.6G 0 disk └─mmcblk0p1 179:33 0 3.5G 0 part /media/emmc zram0 252:0 0 233.1M 0 disk [SWAP] zram1 252:1 0 50M 0 disk /var/log zram2 252:2 0 0B 0 disk lsb_release -a No LSB modules are available. Distributor ID: Debian Description: Armbian 25.8.1 bookworm Release: 12 Codename: bookworm uname -r 6.12.44-current-rockchip64 I don't have an easy way to do the serial terminal thing to check U-Boot. I have updated it to the "latest" using armbian-install, however...

Was the auditd disabled ? Without it is difficult to see where the sysrq comes from. Re. monitoring ttyS1: you could try use screen: sudo screen /dev/ttyS1 9600 Replace 9500 if needed with the baud rate configured in the UPS

Hi, that's me again after a recent very bad sysrq incident on my system (I was away for a couple of days and the system went down for this time). I count > 5000 "sysrq: HELP" messages this time, 77 requests for loglevel changes (to 0, 4 or 8), 9 "show regs" requests, 1 "show state" and 4 "dump ftrace buffer" request. All this during 30 mins. The UART / USB converter was connected to ttyS0, but the PC on the other end was off. But I shall add that I also have connected the status output line of my UPS to ttyS1 (this is an "UPSPACK_V3" board that watches the 5V input and has a Li polymer battery connected). Could it also be that this system sends spurious BREAK commands that issue a SysRq event? And if yes: Is there a simple way to watch this interface? Maybe by temporarily logging the UPS board's UART Tx? Greetings.

@oscylator678 I used this PPA https://launchpad.net/~ernstp/+archive/ubuntu/mesaaco Mesa 23.0, PanVk has already Vulkan 1.4.