This should be fixed in the upstream 3.5-rc5 kernel. >From the changelog:
author Takashi Iwai Thu, 21 Jun 2012 13:30:41 +0000 (15:30 +0200) committer Daniel Vetter Fri, 22 Jun 2012 22:01:42 +0000 (00:01 +0200) commit 6db65cbb941f9d433659bdad02b307f6d94465df tree c86ff900f74f8946bdd5cd8d18c9268d4572fc4a parent 58bf8062d0b293b8e1028e5b0342082002886bd4 drm/i915: Fix eDP blank screen after S3 resume on HP desktops This patch fixes the problem on some HP desktop machines with eDP which give blank screens after S3 resume. It turned out that BLC_PWM_CPU_CTL must be written after BLC_PWM_CPU_CTL2. Otherwise it doesn't take effect on these SNB machines. Tested with 3.5-rc3 kernel. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49233 Cc: stable Signed-off-by: Takashi Iwai Signed-off-by: Daniel Vetter A PPA of this kernel can be found at http://kernel.ubuntu.com/~kernel-ppa/mainline/ See https://wiki.ubuntu.com/Kernel/MainlineBuilds for info on how to install and uninstall it. ** Bug watch added: freedesktop.org Bugzilla #49233 https://bugs.freedesktop.org/show_bug.cgi?id=49233 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/746623 Title: [HP z600] Suspend will not resume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/746623/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
