Bad news: the test_off script available in the acpi_call git does not work. Good news: I found an alternative.
The DSDT table does not include anything relevant, at least for someone not expert like me. But today I discovered there are other tables, looked at them and found the right method. In particular, the SSDT table includes these two methods: "\_SB.PCI0.PEG0.VID._OFF" "\_SB.PCI0.PEG0.VID._ON" which work as expected, by switching off and on the discrete (nvidia) card. With the discrete card off I reach more than 6 hours of battery time with a power consumption below 10W. Comparable to what you can get with Windows. Only issue: you have to re-enable the card on before rebooting or next time the method will not be present (apparently the switch "resists" to reboots). Hope this helps. Regards G. _______________________________________________ Mailing list: https://launchpad.net/~hybrid-graphics-linux Post to : hybrid-graphics-linux@lists.launchpad.net Unsubscribe : https://launchpad.net/~hybrid-graphics-linux More help : https://help.launchpad.net/ListHelp
