[Bug 105267] Screen flickering after getting hpd irq

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105267

--- Comment #33 from sheirys2 at gmail.com <sheirys2 at gmail.com> ---
Hello I think I am also affected by this bug, or similar.

Screen flickers constantly in random intervals. 
Flickering does not appear while running windows or in bios.
To describe "flick" - display or its part becomes black or filled with random
pixels for a very short time. Sometimes "flick" appears more then once per
second.

When "flick" appears dmesg (with drm.debug=0xe) produces:

...
birž. 19 21:29:04 localhost.localdomain kernel: [drm:drm_mode_addfb2 [drm]]
[FB:74]
birž. 19 21:29:04 localhost.localdomain kernel: [drm:gen8_irq_handler [i915]]
hotplug event received, stat 0x01000000, dig 0x11101010, pins 0x00000010
birž. 19 21:29:04 localhost.localdomain kernel: [drm:intel_hpd_irq_handler
[i915]] digital hpd port A - short
birž. 19 21:29:04 localhost.localdomain kernel: [drm:intel_dp_hpd_pulse [i915]]
got hpd irq on port A - short
birž. 19 21:29:04 localhost.localdomain kernel: [drm:intel_dp_read_dpcd [i915]]
DPCD: 12 0a 84 41 00 00 01 01 02 00 00 00 00 0b 00
birž. 19 21:29:04 localhost.localdomain kernel: [drm:drm_mode_addfb2 [drm]]
[FB:72]
...

Arch: x86_64
Kern: 4.16.15-300.fc28.x86_64
Dist: fedora 28
Machine: Lenovo yoga 900s-12isk

xrandr --verbose:
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192
XWAYLAND0 connected 2560x1440+0+0 (0x22) normal (normal left inverted right x
axis y axis) 280mm x 160mm
        Identifier: 0x21
        Timestamp:  21014
        Subpixel:   unknown
        Gamma:      1.0:1.0:1.0
        Brightness: 0.0
        Clones:    
        CRTC:       0
        CRTCs:      0
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: 
  2560x1440 (0x22) 312.250MHz -HSync +VSync *current +preferred
        h: width  2560 start 2752 end 3024 total 3488 skew    0 clock  89.52KHz
        v: height 1440 start 1443 end 1448 total 1493           clock  59.96Hz

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