Bug 219573 - ASUS Zenbook UM5302TA function keys reversed and Fn lock broken after kernel 6.12 update
Summary: ASUS Zenbook UM5302TA function keys reversed and Fn lock broken after kernel ...
Status: RESOLVED CODE_FIX
Alias: None
Product: Drivers
Classification: Unclassified
Component: Input Devices (show other bugs)
Hardware: All Linux
: P3 normal
Assignee: drivers_input-devices
URL:
Keywords:
Depends on: 219517
Blocks:
  Show dependency tree
 
Reported: 2024-12-07 17:04 UTC by Guilhem Lettron
Modified: 2024-12-16 20:23 UTC (History)
1 user (show)

See Also:
Kernel Version: 6.12
Subsystem:
Regression: Yes
Bisected commit-id:


Attachments
dmidecode (17.11 KB, text/plain)
2024-12-07 17:04 UTC, Guilhem Lettron
Details

Description Guilhem Lettron 2024-12-07 17:04:31 UTC
Created attachment 307331 [details]
dmidecode

**Summary:**  
Since upgrading to kernel 6.12 on my ASUS Zenbook UM5302TA laptop, the behavior of function keys (F1-F12) is inverted. To press "F1", I now must use the "Fn" key. Additionally, the "Fn+Esc" combination no longer toggles the function key lock.
Only brightness and volume function keys are working as expected, while others such as keyboard backlight toggle or touchpad disable are non-functional.

**Distribution:**  
Ubuntu 24.10

**Kernel Version:**  
6.12.x (issue not present on previous kernels)

**Hardware Information:**  
ASUS Zenbook UM5302TA (AMD Ryzen 7 6800U)  
BIOS: American Megatrends International, LLC. Version: UM5302TA.313 (Release Date: 09/10/2024)  

**Steps to Reproduce:**
1. Boot into kernel 6.12 on ASUS Zenbook UM5302TA.
2. Attempt to use standard F1-F12 keys without pressing Fn. Keys respond as if Fn were engaged.
3. Attempt to toggle Fn lock via "Fn+Esc". No toggling occurs.
4. Test other function keys (e.g. keyboard backlight, touchpad disable). These no longer function.

**Expected Behavior:**  
- Function keys should operate in the chosen mode (standard F-keys or multimedia keys) without requiring permanent use of Fn if previously toggled.
- "Fn+Esc" should toggle function key mode (F-Lock).
- All function keys (backlight, touchpad toggle, etc.) should function as intended.

**Actual Behavior:**  
- Function keys act as if Fn is always required.
- "Fn+Esc" does not toggle function key lock.
- Some function keys related to keyboard backlight and touchpad are non-functional, while brightness and volume keys still work.

**Additional Notes:**  
- This regression appeared specifically after updating to kernel 6.12.
- Works correctly on earlier kernel versions.
Comment 1 Armin Wolf 2024-12-15 19:28:47 UTC
Kernel 6.12.5 should contain the necessary fix.

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