[Bug 101359] Desktop freeze when connected to external display on login

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Jun 9 02:22:52 UTC 2017


            Bug ID: 101359
           Summary: Desktop freeze when connected to external display on
           Product: Mesa
           Version: 17.0
          Hardware: Other
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: ram.manohar at mail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 131820
  --> https://bugs.freedesktop.org/attachment.cgi?id=131820&action=edit
dmesg output

Description of problem:

3 out of 5 times if my laptop (T460p) is connected to external display via
display port and I reboot the machine, then after login screen the desktop is
completely frozen. Also, while the desktop/display is frozen - I am able to SSH
to the machine remotely and do my stuff. I have gathered journalctl and dmesg
logs via remote SSH when this happened. 

My laptop (Thinkpad T460p) although has Nvidia card - I have noveou module
blacklisted and I always use integrated intel graphics.  My external display is
a AOC 4K monitor connected via display port.

Version-Release number of selected component (if applicable):

Linux pern 4.11.3-200.fc25.x86_64 #1 SMP Thu May 25 19:03:07 UTC 2017 x86_64
x86_64 x86_64 GNU/Linux

How reproducible:

Steps to Reproduce:
1. Connect the laptop to an external display via display port.
2. Reboot the laptop.
3. Enter username & password at login screen and watch the desktop freeze.

Actual results:

Desktop is frozen

Expected results:

Desktop should not be frozen.

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You are the QA Contact for the bug.
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