[Bug 105917] Dell P2715Qt Flickers when using 4K @ 60Hz

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105917

            Bug ID: 105917
           Summary: Dell P2715Qt Flickers when using 4K @ 60Hz
           Product: Mesa
           Version: unspecified
          Hardware: IA64 (Itanium)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: solexNY at gmail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

have the monitor mentioned above and a new Intel NUC7i7BNH with 16 GB Ram and
128 GB SSD. Running Fedora 27 with the latest patches.

I'm using a USB -C cable to Display Port, and the screen will occasionally
flicker on and off and also display a gray bar across the screen

I have verified that there is no problem with the monitor or cable, this
problem does not exist using a Dell laptop with Window 10 and have also ran
through all diagnostics with a Dell technician. In addition the NUC has been
updated to the latest BIOS.

When I switch to 30hz there is no problem, is there a way to get the latest
Intel graphics drivers.

As a side and possibly note GNOME crashes every time a log in from a locked
session. I have submitted many bugs and it appears that others are having the
same problem.

Additionally I just install windows 10 on another drive (same Intel NUC). It
had the same problem with flickering. I updated the "Intel Iris Plus Graphics
650" driver to the latest version 2/4/2018 23.20.16.4944 and the problem has
been eliminated.

I checked Fedora 28 4/4/2018 beta and have the same problem.


output from: inxi SMGxxxz
CPU~Dual core Intel Core i7-7567U (-MT-MCP-) speed/max~1151/4000 MHz
Kernel~4.15.14-300.fc27.x86_64 x86_64 Up~2 min Mem~1857.4/15926.1MB
HDD~120.0GB(24.3% used) Procs~257 Client~Shell inxi~2.3.56  

Graphics: Intel Iris Plus Graphics 650 (Kaby Lake GT3e)

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