2011/4/22 Michał Ochociński <ochocinski.mic...@gmail.com>: > On MSI Fx600 Doesn't work. > > When I wrote "DIS" to /sys/kernel/debug/vgaswitcheroo/switch, I have got a > blank screen. > echo "IGD" > /sys/kernel/debug/vgaswitcheroo/switch restores screen. I don't > have running Xorg. > echo "OFF" > /sys/kernel/debug/vgaswitcheroo/switch doesn't switch off > discrete graphic. No battery time improvement. > Module asus-vgaswitcheroo loaded properly. > > But, acpi_call works well. > Trying \_SB.PCI0.P0P2.PEGP._OFF: works! > > I think the problem might be with modeset. I don't see > '/sys/kernel/debug/vgaswitcheroo/switch' when modeset is switched off.
I think i915 doesn't register a vga switcheroo client w/o mode setting, and you won't get vga switcheroo enabled (and thus see the debugfs entry) without two clients. Too bad it doesn't work for the MSI system, but I can't say I'm surprised. I don't see any of the right entry points in the DSDT. In fact, I don't even see the _OFF method for the PEGP device or a _DSM method that would work with either this module or the optimus switching. You might disassemble and post your SSDTs to see if they've hidden them there. BTW, I assume you get the same behavior with or without asus-switcheroo loaded, right? Thanks, Alex _______________________________________________ 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
