Hi, Adam, Can you please attach the acpidump output of this machine, and the dmesg output after boot? Thanks, rui > -----Original Message----- > From: linux-acpi-owner@xxxxxxxxxxxxxxx [mailto:linux-acpi- > owner@xxxxxxxxxxxxxxx] On Behalf Of Mika Westerberg > Sent: Monday, December 02, 2013 9:18 PM > To: Adam Williamson > Cc: linux-acpi@xxxxxxxxxxxxxxx; Wysocki, Rafael J > Subject: Re: No power management on Bay Trail tablet (Dell Venue 8 Pro) > > +Rafael > > On Sat, Nov 30, 2013 at 01:56:33PM -0800, Adam Williamson wrote: > > Hi, folks. I recently bought a Dell Venue 8 Pro - a Bay Trail / > Valley > > View-based Intel tablet - to try and get Fedora running on it. Among > > the many things I'm currently fighting :), there doesn't appear to be > > any power management going on at all. 'upower -d' > > is pretty much empty, doesn't acknowledge the existence of a battery. > > It looks like there is an I2C operation region that the AML code uses > to handle the battery specific things: > > Scope (_SB.I2C1) > { > Name (UMPC, ResourceTemplate () > { > I2cSerialBus (0x0048, ControllerInitiated, 0x000186A0, > AddressingMode7Bit, "\\_SB.I2C1", > 0x00, ResourceConsumer, , > ) > }) > Name (AVBL, Zero) > Method (_REG, 2, NotSerialized) // _REG: Region Availability > { > If (LEqual (Arg0, 0x09)) > { > Store (Arg1, AVBL) > } > } > > OperationRegion (DVUM, GenericSerialBus, Zero, 0x0100) > ... > > Unfortunately this is not supported in Linux yet. > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" > in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo > info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
