Hi, I’m reporting a regression I encountered after updating to kernel linux-cachyos 7.0.0 on April 23, 2026. Hardware Laptop: Acer Nitro ANV15-41 BIOS: V1.51 Charger: original barrel jack Environment OS: CachyOS Kernel before: linux-cachyos 6.19.10 Kernel after update: linux-cachyos 7.0.0 Symptoms After updating to kernel 7.0.0, the battery no longer charges at all: On Linux: charger is detected for a second then charging stops (current = 0A) On Windows: charger is detected but battery keeps draining Tested with two different chargers, same result on both No TLP charge thresholds configured, no recent firmware flash via fwupd Diagnosis I should mention that I don’t have much Linux experience — this was diagnosed with the help of Claude (claude.ai) and Claude Code. Here’s what they found: At boot, dmesg reports: ACPI: AC: AC Adapter [ACAD] (off-line) …while the charger is physically plugged in. Kernel 7.0.0 appears to interact with the EC (Embedded Controller) via ACPI differently than 6.19.10, putting the EC into a “charge disabled” state that persists across OS reboots — which explains why Windows is affected too. Current workaround I set the LTS kernel ( linux-cachyos-lts 6.18.22 ) as default in Limine: default_entry: CachyOS/linux-cachyos-lts I haven’t been able to confirm it fixes the issue yet (battery too low to test safely), but I’ll update this post as soon as possible. Hope this helps track down the regression. Happy to provide additional logs if needed — Claude Code can help me retrieve them.