Laptop hard drive (HDD) endlessly cycling stopping/starting disk when laptop is on battery. On each cycle a distinctive sound is emitted (like waking disk up). When connecting to AC power - it stops that behavior. Details from dmesg -w: [153386.025516] sd 0:0:0:0: [sda] Synchronizing SCSI cache …

It’s tlp.service responsible for this issue as it enables ALPM (AHCI link power management) and AHCI Runtime PM on BAT which causes this start / stop / start / stop of hdd/ssd. SMART reports thousands of hardware resets for my MX500 caused by this! To disable: in /etc/tlp.conf (or /etc/default/t…

Hard drive (HDD) endlessly cycling stopping/starting disk when laptop is on battery

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winnie 19 October 2021 19:56 3