[Bug 100767] New: Screen flickering when connected external monitor

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100767

            Bug ID: 100767
           Summary: Screen flickering when connected external monitor
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: admin at yankun.org
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

After upgrade kernel v4.6+
I can't use my external monitor any more.
it will cause screen flickering every time when I try to connect it.

Not only the monitor, but also the projector, I think it should be same way.


My laptop is Lenovo T450s
OS: Fedora 25
Kernel: 4.10.10-200.fc25.x86_64


00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09)
(prog-if 00 [VGA controller])
        Subsystem: Lenovo Device 5036
        Flags: bus master, fast devsel, latency 0, IRQ 46
        Memory at e0000000 (64-bit, non-prefetchable) [size=16M]
        Memory at c0000000 (64-bit, prefetchable) [size=512M]
        I/O ports at 3000 [size=64]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: i915
        Kernel modules: i915



I tried to add kernel parameters, but not work
(i915.enable_psr=0 (or 1 or 2))

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