On Mittwoch, 21. Dezember 2022 18:37:20 CET you wrote: > Dear all, > > Comparing power consumption with powertop for a brand new Dell laptop I > found out that Debian is consuming about 6 Watts while Ubuntu is consuming > 3 Watts (idle). Comparing configs I just found out that lspci -vv reports > ASPM enabled 6 x for Ubuntu and 4 x for Debian. The differences are: > > Ubuntu: > Non-Volatile memory controller > ASPM L1 Enabled > Kernel driver in use: nvme > > PCI bridge: Intel Corp 12th Gen.... > ASPM L1 Enabled > Kernel driver in use: pcieport > > Debian: > Non-Volatile memory controller > ASPM Disabled > Kernel driver in use: nvme > > PCI bridge: Intel Corp 12th Gen.... > ASPM Disabled > Kernel driver in use: pcieport > > So the exact same driver is been used and I didn't find any config within > /etc/ modprobe.d or /etc/modules or /etc/modules-load.d with respect to > these modules. > > Do you have an idea why this happens (same computer, so BIOS settings should > have no impact)? > > Thank you very much. > > Best regards, > Bernd
OK, problem solved: with the boot parameter pcie_aspm=force I get the very same 3 W with Debian as with Ubuntu :-) Best, Bernd
