Hi, On 07/13/2011 04:11 PM, Adam Jackson wrote: > On Wed, 2011-07-13 at 15:22 +0300, Pasi Kärkkäinen wrote: >> On Tue, Jul 12, 2011 at 10:01:25PM +0100, Matthew Garrett wrote: >>> Please don't. ACPI lid state is not reliable on a range of hardware for >>> a bunch of reasons, ranging from open events that are never fired to >>> query methods that read from the wrong register. We can't pay attention >>> to it by default, and running a survey doesn't change that. >> >> Ok. Do you know if there are other (better working) methods to get the lid state info? > > If we knew of any, they'd be implemented in the kernel, and we'd be > using them. > > I know this is a frustrating thing to hear, and I empathize, I really > do. But the state of the art right now is that there's one interface > for laptop lids, it's in ACPI, and it's not reliable. > > Once upon a time there was an effort to make a Linux-based test kit for > firmware [1], so vendors could run it before releasing hardware and > verify that the Linux interfaces function. Lid state and lid events > could have been one such test case. Sadly the effort seems to have > stagnated; it could really use a revival. But even such a test kit > would only fix new hardware, existing machines will continue to be as > broken as they currently are forever. Maybe it it is an idea to build a whitelist for machines which do have working ACPI lid support? I realize maintaining such a list is a pain, but this way people who care and are lucky enough to have actually working hardware can at least use this ? Regards, Hans -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
