On Thu, 2008-07-17 at 19:32 +0200, Thomas Renninger wrote: > This is a reimplemention of commit > 0119509c4fbc9adcef1472817fda295334612976 > from Matthew Garrett <mjg59@xxxxxxxxxxxxx> > > This patch got removed because of a regression: ThinkPads with a > Intel graphics card and an Integrated Graphics Device BIOS implementation > stopped working. > In fact, they only worked because the ACPI device of the discrete, the > wrong one, got used (via int10). So ACPI functions were poking on the wrong > hardware used which is a sever bug. > The next patch provides support for above ThinkPads to be able to > switch brightness via the legacy thinkpad_acpi driver and automatically > detect when to use it. Sorry, but I still can't find the code to detect thinkpad laptops. there should be a dmi check in video_detect.c, right? Or do I miss something? thanks, rui > > Original commit message from Matthew Garrett: > Vendors often ship machines with a choice of integrated or discrete > graphics, and use the same DSDT for both. As a result, the ACPI video > module will locate devices that may not exist on this specific platform. > Attempt to determine whether the device exists or not, and abort the > device creation if it doesn't. > > http://bugzilla.kernel.org/show_bug.cgi?id=9614 > > Signed-off-by: Thomas Renninger <trenn@xxxxxxx> -- 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
