Hello Mikko, On Mon, May 05, 2025 at 10:58:22AM +0300, Mikko Juhani Korhonen wrote: > > > On 5/1/25 05:36, Ioannis Barkas wrote: > > >> It would be better to have more details on this since only the 2TB > > >> model is targeted. > > Hello guys, > first of all thanks for helping me with git format-patch, I should > have read instructions about not using gmail text mode. The last patch > I sent (or not can't remember for sure) was a dot matrix printer > driver for something like 1.1.95 :) > > I have two WD20EFAX-68FB5N0 and both behave consistently, unusable > from 6.9.0 on as they just keep resetting the SATA link , but they > have worked flawlessly with 6.8.x for a year and also now with the > quirk applied. > > I have also tested a different WDC model with med_power_with_dipm on > the same SATA port and there are no problems. > > But after you guys got suspicious I found there is in fact a SATA port > on my motherboard where the WD20EFAX-68FB5N0 works with LPM on. So I > guess it's entirely possible that this is after all some kind of > interoperating issue between a certain SATA port of a ASUS B550 F > Gaming WiFi and the WDC, either unique to my items or in a larger > production batch. This motherboard looks to be AMD chipset, so I assume AMD AHCI controller. Could you send the output of: $ lspci -nn | grep -E "SATA|AHCI"