It seems that the bug is fixed in the kernel 3.16. For me, it works normally again.
Archlinux xorg-server 1.16.0-5 xf86-video-intel 2.99.914-1 libdrm 2.4.56-1 mesa 10.2.4-1 linux 3.16-1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1339939 Title: [Lenovo ThinkPad T400] intel graphics fail after suspend with 3.16 kernel To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1339939/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs