sent to Ubuntu Kernel ML for SRU review: SRU Justification
Impact: Not uable to switch to the externel output-only (e.g. VGA or HDMI) mode. It causes flickering on the externally attached monitor. This bug is common on many SandyBridge-based laptops. Fix: Upstream patch to disable PCH ports if needed when disabling a CRTC. Test case: I tested on Lenovo Zhaoyang E47 and two Dell SandyBridge- based laptops. BugLink: http://bugs.launchpad.net/bugs/791752 This backport patch is not in 2.6.38.y because of its end-of-life. For the reference, the patch helps LP#745112 too, though not perfectly. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/791752 Title: Can not toggle Display to External only mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-desktop3/+bug/791752/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
