On Wed, Mar 11, 2009 at 03:29:10PM +0800, Zhang Rui wrote: > On Wed, 2009-03-11 at 10:46 +0800, Matthew Garrett wrote: > > On Wed, Mar 11, 2009 at 10:45:27AM +0800, Zhang Rui wrote: > > > > > The problem can be fixed by disabling Nvidia card via ACPI _DSM method. > > > And it seems that there are some works already done for this issue. > > > http://archive.netbsd.se/?ml=xorg&a=2009-02&t=9908058 > > > > This method is specific to Sony. What would be most helpful here would > > be for Intel to tell us how this is actually meant to work. > > > Well, the change in sony-laptop driver is a new feature rather than a > bug fix. > the new sony-laptop driver introduces a new sysfs I/F: > /sys/devices/platform/sony-laptop/speed_stamina > and users can echo {speed, stamina} to this file to switch between > Intel and Nvidia graphics card. and see their Xorg miserably die. ;) Jokes aside, I have no big problem incorporating the differences in the driver, just that: - I can't test it - some models have different magic numbers for the _DSM invocation, from the DSDT I have available: DSDT.sz.xxx.dsl (some uknown model) DSDT.sz61mn-forXP.dsl DSDT.tt11lnb.dsl DSDT.z11vn.dsl DSDT.z90s.dsl VGN-SZ4XWNC-R0111N0.dsl and for what I can see, z and tt have the same magic numbers while the sz has different ones. So the code that calls _DSM will need to have some DMI switch to make sure we are calling it with the right parameters (for now supporting z and tt might be enough) I'll see what I can do (I accept patches in case someone feels like doing it) -- mattia :wq! -- 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
