bc250 reboot when idleing

[janithdg]

Hi @MTSistemi,
what sort of logs i can provide in this case?

following is from skillfish-freeze.log at /var/log/

2026-09-21T18:57:25+05:30 unclean-shutdown profile=bc250 cpu=?MHz gpu_max=?MHz
2026-09-22T15:31:15+05:30 unclean-shutdown profile=bc250 cpu=?MHz gpu_max=?MHz
2026-09-23T01:21:53+05:30 unclean-shutdown profile=bc250 cpu=3500MHz gpu_max=?MHz
2026-09-23T19:26:21+05:30 unclean-shutdown profile=bc250 cpu=3500MHz gpu_max=?MHz
2026-09-23T23:22:48+05:30 unclean-shutdown profile=bc250 cpu=3500MHz gpu_max=?MHz
all last 3 are freeze reboots while idling for long time

[janithdg]

following is what i could find so far

ep 24 20:05:59 janith-steam-console steam[3149]: Fossilize INFO: Setting autogroup scheduling.
Sep 24 20:06:03 janith-steam-console steam[3149]: chdir "/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common/Rise of the Tomb Raider"
Sep 24 20:06:03 janith-steam-console steam[3149]: ERROR: ld.so: object '/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS>
Sep 24 20:06:03 janith-steam-console steam[3149]: ERROR: ld.so: object '/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS>
Sep 24 20:06:03 janith-steam-console steam[3149]: ERROR: ld.so: object '/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_64/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS>
Sep 24 20:06:03 janith-steam-console steam[3149]: Game Recording - would start recording game 391220, but recording for this game is disabled
Sep 24 20:06:03 janith-steam-console steam[3149]: Adding process 1167 for gameID 391220
Sep 24 20:06:03 janith-steam-console steam[3149]: ERROR: ld.so: object '/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS>
Sep 24 20:06:03 janith-steam-console steam[3149]: ERROR: ld.so: object '/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS>
Sep 24 20:06:03 janith-steam-console steam[3149]: Adding process 1168 for gameID 391220
Sep 24 20:06:03 janith-steam-console steam[3149]: Adding process 1169 for gameID 391220
Sep 24 20:06:04 janith-steam-console steam[3149]: pressure-vessel-wrap[1168]: W: "opt/skillfish-gfx1013/share/drirc.d" is unlikely to appear in "/run/parent"
Sep 24 20:06:04 janith-steam-console steam[3149]: pressure-vessel-wrap[1168]: W: "opt/skillfish-gfx1013/share/drirc.d" is unlikely to appear in "/run/parent"
Sep 24 20:06:04 janith-steam-console systemd[1331]: Started app-flatpak-com.valvesoftware.Steam-4188450640.scope.
Sep 24 20:06:05 janith-steam-console steam[3149]: pid 1245 != 1239, skipping destruction (fork without exec?)
Sep 24 20:06:05 janith-steam-console steam[3149]: Adding process 1239 for gameID 391220
Sep 24 20:06:05 janith-steam-console steam[3149]: Adding process 1266 for gameID 391220
Sep 24 20:06:05 janith-steam-console steam[3149]: Adding process 1272 for gameID 391220
Sep 24 20:06:05 janith-steam-console steam[3149]: pid 1275 != 1272, skipping destruction (fork without exec?)
Sep 24 20:06:05 janith-steam-console steam[3149]: pid 1274 != 1272, skipping destruction (fork without exec?)
Sep 24 20:06:05 janith-steam-console steam[3149]: pid 1279 != 1239, skipping destruction (fork without exec?)
Sep 24 20:06:05 janith-steam-console steam[3149]: pid 1285 != 1239, skipping destruction (fork without exec?)
Sep 24 20:06:05 janith-steam-console steam[3149]: Adding process 1277 for gameID 391220
Sep 24 20:06:05 janith-steam-console steam[3149]: Adding process 1278 for gameID 391220
Sep 24 20:06:05 janith-steam-console steam[3149]: Adding process 1281 for gameID 391220
Sep 24 20:06:05 janith-steam-console steam[3149]: Adding process 1283 for gameID 391220
Sep 24 20:06:05 janith-steam-console steam[3149]: Adding process 1282 for gameID 391220
Sep 24 20:06:05 janith-steam-console steam[3149]: Adding process 1284 for gameID 391220
Sep 24 20:06:05 janith-steam-console steam[3149]: RiseOfTheTombRaider: crash reporter initialised with path "/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/feral-interactive/Rise of the Tomb Raider/crashes"
Sep 24 20:06:05 janith-steam-console steam[3149]: Adding process 1286 for gameID 391220
Sep 24 20:06:05 janith-steam-console steam[3149]: Adding process 1287 for gameID 391220
Sep 24 20:06:05 janith-steam-console steam[3149]: Adding process 1288 for gameID 391220
Sep 24 20:06:05 janith-steam-console steam[3149]: SDL2 initialised [built against 2.0.7, running with 2.0.7]
Sep 24 20:06:05 janith-steam-console steam[3149]: Setting breakpad minidump AppID = 391220
Sep 24 20:06:05 janith-steam-console steam[3149]: Steam_SetMinidumpSteamID:  Caching Steam ID:  76561198001215170 [API loaded no]
Sep 24 20:06:07 janith-steam-console steam[3149]: Fossilize INFO: Overriding serialization path: "/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/shadercache/391220/fozpipelinesv6/steamapprun_pipeline_cache".
Sep 24 20:06:07 janith-steam-console steam[3149]: 09/24 20:06:07 minidumps folder is set to /tmp/dumps
Sep 24 20:06:07 janith-steam-console steam[3149]: 09/24 20:06:07 Init: Installing breakpad exception handler for appid(gameoverlayui)/version(20260903013152)/tid(1403)
Sep 24 20:06:07 janith-steam-console steam[3149]: 09/24 20:06:07 Init: Installing breakpad exception handler for appid(gameoverlayui)/version(1.0)/tid(1403)
Sep 24 20:06:07 janith-steam-console steam[3149]: src/public/tier1/interface.h (273) : Assertion Failed: Failed to load "libnvidia-ml.so.1"
Sep 24 20:06:08 janith-steam-console steam[3149]: assert_20260924200607_9.dmp[1424]: Uploading dump (out-of-process)
Sep 24 20:06:08 janith-steam-console steam[3149]: /tmp/dumps/assert_20260924200607_9.dmp
Sep 24 20:06:10 janith-steam-console steam[3149]: assert_20260924200607_9.dmp[1424]: Finished uploading minidump (out-of-process): success = yes
Sep 24 20:06:10 janith-steam-console steam[3149]: assert_20260924200607_9.dmp[1424]: response: CrashID=bp-6b712a19-6c32-46c6-a352-bd8ef2260924
Sep 24 20:06:10 janith-steam-console steam[3149]: assert_20260924200607_9.dmp[1424]: file ''/tmp/dumps/assert_20260924200607_9.dmp'', upload yes: ''CrashID=bp-6b712a19-6c32-46c6-a352-bd8ef2260924''
Sep 24 20:06:47 janith-steam-console steam[3149]: Warning: Previous run didn't quit gracefully, attempting to run crash reporter.
Sep 24 20:06:47 janith-steam-console steam[3149]: [OS ERROR] Message: Closed

[janithdg]

i think this is due to libnvidia-ml.so.1

Sep 24 20:06:07 janith-steam-console steam[3149]: Fossilize INFO: Overriding serialization path: "/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/shadercache/391220/fozpipelinesv6/steamapprun_pipeline_cache".
Sep 24 20:06:07 janith-steam-console steam[3149]: 09/24 20:06:07 minidumps folder is set to /tmp/dumps
Sep 24 20:06:07 janith-steam-console steam[3149]: 09/24 20:06:07 Init: Installing breakpad exception handler for appid(gameoverlayui)/version(20260903013152)/tid(1403)
Sep 24 20:06:07 janith-steam-console steam[3149]: 09/24 20:06:07 Init: Installing breakpad exception handler for appid(gameoverlayui)/version(1.0)/tid(1403)
Sep 24 20:06:07 janith-steam-console steam[3149]: src/public/tier1/interface.h (273) : Assertion Failed: Failed to load "libnvidia-ml.so.1"
Sep 24 20:06:08 janith-steam-console steam[3149]: assert_20260924200607_9.dmp[1424]: Uploading dump (out-of-process)
Sep 24 20:06:08 janith-steam-console steam[3149]: /tmp/dumps/assert_20260924200607_9.dmp

[janithdg]

im leaning towards its due to following packages

janiths@janith-steam-console:$ sudo apt list | grep nvidia | grep installed
firmware-nvidia-graphics/unstable,unstable,now 20260810-1 all [installed]
glx-alternative-nvidia/unstable,now 1.2.2 amd64 [installed,automatic]
nvidia-installer-cleanup/unstable,now 20240109+1 amd64 [installed,automatic]
nvidia-kernel-common/unstable,now 20240109+1 amd64 [installed,automatic]
nvidia-modprobe/unstable,now 610.57.04-1 amd64 [installed,automatic]
nvidia-tesla-470-alternative/unstable,now 470.256.02-9 amd64 [installed,automatic]
nvidia-tesla-470-kernel-support/unstable,now 470.256.02-9 amd64 [installed]
janiths@janith-steam-console:$

[MTSistemi]

Thanks for the log. What it tells us is only that the board went down without being asked (our marker file was missing at the next boot), not why. A freeze that takes the machine down before journald writes anything leaves nothing in the journal, so we have to catch it from outside or from memory that survives a reset.

What would help, roughly in order of usefulness:

1. Does it stop when the CPU is left alone? Your entries say cpu=3500MHz, which is our overclock. In the Control Center, Tuner > CPU, set the frequency back to stock and untick Save at boot, then leave the board idle for a day. If the unclean shutdowns stop, we know where to look. We have seen synthetic all-core load at 3500 take a board down; idle is a different case and worth separating.

2. What the firmware kept from the crash, if anything:

   sudo dmesg --level=emerg,alert,crit,err -T | tail -40
   ls /sys/fs/pstore/
   

   Anything under /sys/fs/pstore is a panic the firmware saved across the reset. Please paste it if there is something.

3. The journal of the boot that died, with persistent storage on so it survives:

   sudo mkdir -p /var/log/journal && sudo systemctl restart systemd-journald
   # after the next event:
   sudo journalctl -b -1 -p warning --no-pager | tail -60
   

4. Temperature and clocks while idle: the Monitor page of the Control Center records a session to a file, and a few hours of idle before one of these resets would tell us whether anything moves before the board goes.

5. If you have a second machine on the LAN, netconsole catches the last kernel lines when nothing else can:

   sudo modprobe netconsole netconsole="6666@<board-ip>/,6666@<other-ip>/<other-mac>"
   # on the other machine: nc -u -l 6666
   

One more thing worth ruling out, since it costs nothing: the 26.09.47 update is on apt now, and it fixes the NVIDIA packages we shipped by mistake (#102) and a couple of services that were never switched on in installed systems (#98).

[MTSistemi]

Found it, @janithdg, and it was on our side.

After 15 minutes without input, Plasma puts a desktop PC to sleep. The BC-250 only offers s2idle, and it never wakes up from it. Nothing in our images stopped this. Our own boards never showed it because their sleep targets had been masked by hand, and no package did that. So every installed board left alone for a quarter of an hour went down. It came back only with a power cycle, and the freeze detector logged it as an unclean shutdown with nothing in the journal. That matches your log exactly.

Reproduced on our dev board: with sleep allowed, a 45-second rtcwake -m freeze never returned, and the board stayed dead until its power was cut. After the next boot skillfish-freeze.log had the same line you posted.

Fixed in 26.09.48, on apt now. skillfish-base switches sleep off at every boot, and only on a BC-250: logind answers CanSuspend=no, Plasma stops scheduling it, and a suspend request from anywhere (Game Mode included) is refused. Other computers keep sleep as Debian ships it. The release check now fails if a BC-250 can be suspended.

Update from the Hub, or:

sudo apt update && sudo apt full-upgrade

To confirm on your board, this should print s "no":

busctl call org.freedesktop.login1 /org/freedesktop/login1 org.freedesktop.login1.Manager CanSuspend

The CPU clock and the other data I asked for earlier are not needed for this. If the board still goes down after the update, then it is something else, and they are the place to start.

[janithdg]

following also oberseved but dont think its related

Sep 25 02:25:38 janith-steam-console steam[4860]: ERROR: ld.so: object '/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS>
Sep 25 02:25:38 janith-steam-console steam[4860]: ERROR: ld.so: object '/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS>
Sep 25 02:25:38 janith-steam-console steam[4860]: ERROR: ld.so: object '/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_64/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS>
Sep 25 02:25:38 janith-steam-console steam[4860]: ERROR: ld.so: object '/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS>
Sep 25 02:25:38 janith-steam-console steam[4860]: Game Recording - would start recording game 391220, but recording for this game is disabled
Sep 25 02:25:38 janith-steam-console steam[4860]: Adding process 945 for gameID 391220
Sep 25 02:25:39 janith-steam-console steam[4860]: ERROR: ld.so: object '/home/janiths/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS>
Sep 25 02:25:39 janith-steam-console steam[4860]: Adding process 946 for gameID 391220

[janithdg]

Since moving to 7.2.6 didnt observed any freeze reboots

[janithdg]

Hi @MTSistemi,
ive let the bc250 idle for over a day now since 7.2.6 kernel upgrade, no hang reboots happened and now systems much stable,
from this week ill be moving to testing AI modes properly

[MTSistemi]

Thanks for letting it sit idle for a whole day, that is the test that counts.

For the record: the kernel and the fix arrived in the same round of updates, but what stops the idle resets is 26.09.48, which switches sleep off on the BC-250. The board was going to sleep after 15 idle minutes and never waking up.

The wrong ELF class lines are Steam trying to load its overlay library into both 32-bit and 64-bit processes. Every Steam install prints them, and they do no harm.

I'm closing this as resolved. If a reset comes back, open a new discussion and paste the skillfish-freeze.log lines. For the AI modes, #105 is fixed in 26.09.50.

[janithdg]

@MTSistemi,
its being idling for over 3 days now :)
running stable 41c and 68c at load