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Acpi Ibm0068 Page

Add to kernel command line (e.g., in GRUB):

libata.force=noncq

or

modprobe.blacklist=ata_generic

Or disable the UltraBay SATA port in BIOS if not used. acpi ibm0068

| Attribute | Value | |-----------|-------| | Full ID | IBM0068:00 | | Device class | Hot-plug controller | | Affected models | ThinkPad T40–T61, R50–R61, X60–X61 (with UltraBay), later X200/T400 (modified) | | Linux driver | thinkpad_acpi, acpi, pci_hotplug | | ACPI path (typical) | \_SB_.PCI0.LPC_.EC__.IB68 | | Related DSDT Device | Device (IB68) |

In a Linux system, you might investigate ACPI devices by looking at the output of dmesg, which shows kernel messages, including those related to ACPI device detection: Add to kernel command line (e

dmesg | grep -i acpi

Or explore the ACPI-related directories:

ls /sys/class/power_supply/  # Might show ACPI power supply interfaces
ls /proc/acpi/              # Might show detailed ACPI information
  • Check available ACPI devices:
  • See which module binds:
  • Verify kernel version: newer kernels may include fixes. uname -r

    • A quick scan of Linux forums (Reddit r/thinkpad, Arch Linux BBS, Ubuntu Launchpad) reveals a consensus: Ignore the IBM0068 ACPI error. or modprobe

    In 2024, a patch was proposed to the Linux kernel mailing list to downgrade the IBM0068 message from KERN_WARNING to KERN_DEBUG, effectively hiding it by default. As of kernel 6.8+, you may still see it, but future kernels (6.10+) may finally silence it natively.

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