On Wed, Feb 05, 2025 at 09:37:59AM +0100, Niklas Cassel wrote: > Hello Daniel, Dieter, > > Dieter recently submitted an issue on bugzilla that v6.14-rc1 > breaks entering lower power packages states: > https://bugzilla.kernel.org/show_bug.cgi?id=219747 > > Most likely, the problem is caused by Daniel's recent commit: > cc77e2ce187d ("ata: libata-core: Add ATA_QUIRK_NOLPM for Samsung SSD 870 > QVO drives") > > Dieter is using 'Samsung SSD 870 QVO 8TB', rev 'SVQ02B6Q'. > > No longer being able to enter lower package states, suggests that > LPM was previously working for Dieter's Samsung SSD 870 QVO drives. > > Daniel claimed that enabling LPM for his Samsung SSD 870 QVO drive, > caused them to stop working. > > > Could it be that you guys are running different firmware versions on > your Samsung SSD 870 QVO drives, and that Samsung has managed to fix > their LPM issues in more recent firmware updates? > > It seems like Dieter is using firmware 'SVQ02B6Q' > which also seems to be the latest when looking at: > https://semiconductor.samsung.com/consumer-storage/support/tools/ > > Daniel, could you please tell us which firmware version you are using? > > We might have to adjust the QUIRK to only apply for the firmware version > that you are using. > > It could also be interesting to see if you could update the firmware on > your drive, and revert the quirk, and see if LPM is working for you with > the latest firmware version. Hello Daniel, Could you please provide which firmware version you are using. If not, I do not see any other option but to revert your patch. Kind regards, Niklas