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By Zayden R., August 1, 2026
Linux 7.2-rc6 introduces ATA fixes disabling Link Power Management for certain Western Digital SATA drives. This resolves issues with drives going offline, crucial for engineers using these devices in NAS systems.
Linux 7.2-rc6 brings a crucial update for engineers dealing with Western Digital SATA drives. The kernel release includes several ATA fixes that disable Link Power Management (LPM) for specific drives, addressing long-standing issues where these drives would go offline unexpectedly. This matters for anyone relying on these drives for stable operation, especially within NAS environments.
The problem first surfaced last year, where users reported their SATA drives going offline after some time. Investigation revealed the culprit to be LPM, a power-saving feature designed to reduce power consumption by letting the communication link rest between the drive and the controller. However, on certain Western Digital drives, this feature caused more harm than good, leading to system instability.
Specifically, the drives affected include the WDC WD100EFGX-68CPLN0 and the WDC WD102KFBX-68M95N0, both 10TB Red Plus models designed for NAS use. An additional patch was applied to the Western Digital Green 2.5 480GB drive, which had similar issues shortly after booting. The workaround in Linux 7.2-rc6 blacklists these drives from using LPM by default, ensuring they function correctly out of the box.
For those not immediately updating to the latest kernel, an alternative is to boot with the libata.force=nolpm parameter. This disables LPM across the board, though it sacrifices the potential power savings of 0.5 to 1.5 watts per drive. These changes are now part of the Linux 7.2-rc6 test release, with the stable version expected later in August.
This update is a solid improvement for sysadmins and engineers who have been grappling with these issues. It simplifies the configuration and ensures reliable drive performance without the need for manual intervention.
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