[Bug 1568573] Re: i915 Skylake - Ultra Dock external displays not detected after suspend/resume cycle
The drm-next kernel from today is working slightly better. It detects my display at boot but not after undocking/docking. And occational freezes when working with "display settings" under gnome. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1568573 Title: i915 Skylake - Ultra Dock external displays not detected after suspend/resume cycle To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1568573/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1568573] Re: i915 Skylake - Ultra Dock external displays not detected after suspend/resume cycle
For what it's worth. I've tried drm-next 4.6.0.996 from the April 22:nd and 27:th. Both kernel boots and seemingly works well but does not detect my monitors. The kernel from April 15:th gives me output on all monitors but has kernel Oops:es and Panics simply from opening the display settings in gnome as well as docking and undocking. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1568573 Title: i915 Skylake - Ultra Dock external displays not detected after suspend/resume cycle To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1568573/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1568573] Re: i915 Skylake - Ultra Dock external displays not detected after suspend/resume cycle
My problems partially went away with the Dave Arlie's "drm-next" kernel. I've had one crash when I attached the second monitor to the dock. I was unable to record any output from the kernel. I rebooted and everything works fine. So far so good. output from uname -r: 4.6.0-996-generic downloaded from: http://kernel.ubuntu.com/~kernel-ppa/mainline/drm- next/2016-04-15-wily/ Mainline does not work. I get a "soft lockup" warning from the NMI Watchdog and the boot goes nowhere. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1568573 Title: i915 Skylake - Ultra Dock external displays not detected after suspend/resume cycle To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1568573/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1568573] Re: i915 Skylake - Ultra Dock external displays not detected after suspend/resume cycle
Oh, I had to get new i915 firmware from here: https://01.org/linuxgraphics/downloads -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1568573 Title: i915 Skylake - Ultra Dock external displays not detected after suspend/resume cycle To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1568573/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1568573] Re: i915 Skylake - Ultra Dock external displays not detected after suspend/resume cycle
I see the same error message when either docking my laptop or attaching a monitor to a displayport on the dock. There are some differences. I use a Dell Latitude E7470 and a Dell dock (will have to look up the model). After the messaged shown in this bug my kernel freezes. If you think these differences warrants a separate bug, please let me know. Here is someone else that is affected: https://ulikoenig.de/skylake- unter-linux-zum-laufen-kriegen-am-beispiel-eines-dell-latitude-e7270/ Here is my complete error message, I hade to transcribe it from a photo, the kernel freezes completely and doesn't reboot: [drm:intel_dp_start_link_train [i915]] *ERROR* too many voltage retries, give up [drm:indel_dp_complete_link_train [i915]] *ERROR* Timed out waiting for DP idle patterns Kernel panic - not syncing: Timeout: Not all CPUs entered broadcast exception handler Shutting down cpus with NMI Kernel Offset: disabled drm_kms_helper: panic_occurred, switching back to text console Rebooting in 30 seconds.._ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1568573 Title: i915 Skylake - Ultra Dock external displays not detected after suspend/resume cycle To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1568573/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
