CachyOS / CachyOS/distribution
[Bug]: Firmware Bug RedmiBook Pro 16 2024 ACPI RUCC & SMBus errors
- Dominant language
- No language data
- Stars
- 27
- Forks
- 2
- PR merge metrics
- No merged PRs in 30d
Description
### Kernel
7.0.3-1-cachyos
### Desktop Environment / Window Manager
GNOME
### CPU
Intel Core Ultra 7 155H (Meteor Lake)
### GPU / Driver
Intel Arc Graphics / i915
### Description
On RedmiBook Pro 16 2024 laptop, boot logs show ACPI and SMBus firmware errors caused by BIOS compatibility issues. These are kernel-level firmware bugs from the manufacturer's BIOS.
### Steps to Reproduce
1. Power on the laptop and boot CachyOS
2. Check kernel boot logs (journalctl -b -p err)
3. ACPI RUCC errors and SMBus busy errors appear automatically
### Expected Behavior
No ACPI firmware errors and no SMBus busy errors during system boot.
### Actual Behavior
Boot process generates multiple ACPI errors:
- ACPI Error: Missing argument(s) for method [RUCC]
- i801_smbus 0000:00:1f.4: SMBus is busy, can't use it!
### Logs / Error Messages
Full detailed logs (dmesg, journalctl, acpidump, dmidecode) are attached in the ZIP file. BIOS Version: RMAMT6B0P0B0B
### Additional Context
These are well-known BIOS compatibility bugs on Xiaomi/RedmiBook laptops.
The errors do not affect daily system usage but appear in kernel boot logs.
Contributor guide
No contributing guide indexed for this repository
Research direction
Start with the attached dmesg, journalctl -b -p err, acpidump, and dmidecode logs, and verify the ACPI RUCC and i801_smbus messages on kernel 7.0.3-1-cachyos. Done means determining whether a CachyOS-side change is possible or documenting that the BIOS is responsible and no repository change is available.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- linux
- Domain
- operating-systems
- Issue type
- Bug
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100