Re: 8178, go440, toshiba 5105-s501, acpi "no-legacy"
same problems here (well ... no wonder, my laptop being a toshiba 5100-503 so same series). The workaround for getting 1600x1200 doesn't work anymore BUT it's possible to obtain 1600x1200 at 43 Hz (which sounds a bit weird to me I've to say).
For the lid switch problem, it didn't happen with 7xxx driver series (and isn't related to kde since I don't use it). I didn't try if it was also happening with xorg 6.8 (using v7.0 here).
Attaching a bug report in case it may be useful.