https://bugzilla.kernel.org/show_bug.cgi?id=221062
--- Comment #1 from Islam Ahmed ([email protected]) --- ### [CRITICAL IMPACT] * **Performance Regression:** There is a severe performance gap between Windows and Linux on this hardware. On Windows, the APU performs at 100% capacity. On Linux, we observe a **loss of 50% or more in performance**. * **Scale of Deployment:** This is a fleet-wide issue affecting an entire workplace. We have a large number of identical HP EliteDesk 705 G2 SFF units; all exhibit the same performance degradation and ACPI errors. This is currently blocking our full migration to Linux. --- ### [OVERVIEW] On the HP EliteDesk 705 G2 SFF, the kernel consistently reports ACPI interpreter errors during boot. The primary failure is a missing symbol `\_SB.ALIB`. As `ALIB` (AMD Linux Interface Bridge) is responsible for power state communication between the BIOS and the `amdgpu` driver, its absence appears to be capping the APU's TDP and clock speeds. This prevents the hardware from reaching the performance levels seen on Windows. ### [LOG SNIPPET] ```text Feb 07 06:06:33 nixxin kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.ALIB], AE_NOT_FOUND (20250807/psargs-332) ``` -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ acpi-bugzilla mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
