(In reply to comment #125) > (In reply to comment #115) > > I tried applying the two patches which you posted on intel-gfx[1], ported to > > 3.13. > > > > [1] http://article.gmane.org/gmane.comp.freedesktop.xorg.drivers.intel/33737 > > > > Using a T540p and an Ultradock, connected to a Dell U2410 via a DisplayPort > > cable --- and it worked! Not only were there no hangs, but in fact I could > > enable and disable the external display. The "too many retries" did indeed > > trigger: > > These patches did not work for me with my T440s. During bootup it hangs > upon switch to FB. Once booted undocked, it hangs when docked and external > monitor is enabled through xrandr.
Try to update your dock to the new firmware. It should resolve this issue, at least if you are using only a single external display! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1275794 Title: Lenovo T440s freezes when connected to docking station To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1275794/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
