Split lock detection in masse on Linux. UI unresponsive, os unresponsive. #725

New Issue

MrUnknownDE · 2026-04-05T16:27:30+02:00

MrUnknownDE commented

2026-04-05 16:27:30 +02:00

Originally created by @elHatchling on 2/16/2026

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

232-beta2 (Appimage).

Operating System (OS)

Linux

OS Version

Arch Linux/endeavouros

Additional system information

AMD Ryzen 9 9950X 16-Core Processor.
64 GB memory.
Sapphire NITRO+ RX 7900 XTX Vapor-X.

Printer

Bambu Lab P1S / Bambu Lab H2D

How to reproduce

Start Orcaslicer.
Try to change any input capable field.
Wait 30-45 secs, try again, now it works.
The same also applies to any app in the os, example gedit. Unresponsive.
Up/Down widgets is working.

Actual results

Terminal is flooded with lines like this. Do a "sudo dmesg".
[592010.268228] handle_bus_lock: 5666 callbacks suppressed
[592010.268232] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa84962647e
[592010.268236] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa84962649a
[592010.268238] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa8496264ae
[592010.268240] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa8496264bd
[592010.268241] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa84958a99f
[592010.268243] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa84958a9bd
[592010.268244] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa849740a66
[592010.268246] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa849740a7a
[592010.268248] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa84962647e
[592010.268249] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa84962649a
[592189.038937] handle_bus_lock: 46421 callbacks suppressed
[592189.038942] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962647e
[592189.038948] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962649a
[592189.038950] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa8496264ae
[592189.038952] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa8496264bd
[592189.038954] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84958a99f
[592189.038956] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84958a9bd
[592189.038958] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa849740a66
[592189.038960] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa849740a7a
[592189.038971] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962647e
[592189.038972] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962649a
[592489.259113] handle_bus_lock: 1308 callbacks suppressed
[592489.259117] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962647e
[592489.259123] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962649a
[592489.259126] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa8496264ae
[592489.259127] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa8496264bd
[592489.259129] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84958a99f
[592489.259131] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84958a9bd
[592489.259133] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa849740a66
[592489.259134] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa849740a7a
[592489.259145] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962647e
[592489.259147] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962649a

Expected results

No input capable edit box is working.

Project file & Debug log uploads

project-file.zip

logfiles.zip

Checklist of files to include

Log file
Project file

Anything else?

Found this on Bambu Labs github page.
This could be related: https://github.com/bambulab/BambuStudio/issues/8605

*Originally created by @elHatchling on 2/16/2026* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 232-beta2 (Appimage). ### Operating System (OS) Linux ### OS Version Arch Linux/endeavouros ### Additional system information AMD Ryzen 9 9950X 16-Core Processor. 64 GB memory. Sapphire NITRO+ RX 7900 XTX Vapor-X. ### Printer Bambu Lab P1S / Bambu Lab H2D ### How to reproduce 1. Start Orcaslicer. 2. Try to change any input capable field. 3. Wait 30-45 secs, try again, now it works. 4. The same also applies to any app in the os, example gedit. Unresponsive. 5. Up/Down widgets is working. ### Actual results Terminal is flooded with lines like this. Do a "**sudo dmesg**". [592010.268228] handle_bus_lock: 5666 callbacks suppressed [592010.268232] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa84962647e [592010.268236] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa84962649a [592010.268238] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa8496264ae [592010.268240] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa8496264bd [592010.268241] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa84958a99f [592010.268243] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa84958a9bd [592010.268244] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa849740a66 [592010.268246] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa849740a7a [592010.268248] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa84962647e [592010.268249] x86/split lock detection: #DB: send_worker/3326341 took a bus_lock trap at address: 0x7fa84962649a [592189.038937] handle_bus_lock: 46421 callbacks suppressed [592189.038942] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962647e [592189.038948] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962649a [592189.038950] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa8496264ae [592189.038952] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa8496264bd [592189.038954] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84958a99f [592189.038956] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84958a9bd [592189.038958] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa849740a66 [592189.038960] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa849740a7a [592189.038971] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962647e [592189.038972] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962649a [592489.259113] handle_bus_lock: 1308 callbacks suppressed [592489.259117] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962647e [592489.259123] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962649a [592489.259126] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa8496264ae [592489.259127] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa8496264bd [592489.259129] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84958a99f [592489.259131] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84958a9bd [592489.259133] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa849740a66 [592489.259134] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa849740a7a [592489.259145] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962647e [592489.259147] x86/split lock detection: #DB: orcaslicer_main/3296076 took a bus_lock trap at address: 0x7fa84962649a <img width="1092" height="709" alt="Image" src="https://github.com/user-attachments/assets/470f2364-aabe-4cef-a1f9-11000454d976" /> ### Expected results No input capable edit box is working. ### Project file & Debug log uploads [project-file.zip](https://github.com/user-attachments/files/25345253/project-file.zip) [logfiles.zip](https://github.com/user-attachments/files/25345265/logfiles.zip) ### Checklist of files to include - [x] Log file - [x] Project file ### Anything else? Found this on Bambu Labs github page. This could be related: https://github.com/bambulab/BambuStudio/issues/8605

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Reference: github/OrcaSlicer#725