I checked the patch from comment 15 against 3.1.1. While xrandr is faster switching my screen it still takes a long time (3.8 seconds) to read out the current information. What is worse during switching or asking the information X is blocking! meaning not even the mouse is moving. This also happens when other applications ask for display information (e.g. wine seems to do that a lot).
I reported a separate issue for this bug 47059 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/855124 Title: XRANDR operations very slow unless (phantom) HDMI1 disabled To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/855124/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
