[Bug 100440] [GLK] [IGT] testdisplay -a shows corruption on HDMI 4k display

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100440

--- Comment #8 from Luis Botello <luis.botello.ortega at intel.com> ---
This issue is still happening on my GLK, my HDMI display is an acer S277HK ED
27" 3840X2160 .

While test is running some resolutions are not displayed and got the message:
"Input Not Supported" in the screen and after this all the other resolutions
tested have corruption.

CRTC(36):[0]  3840x2160 60 3840 3888 3920 4000 2160 2163 2168 2222 0x9 0x48
533250 - ok
CRTC(36):[1]  3840x2160 30 3840 4016 4104 4400 2160 2168 2178 2250 0x5 0x40
297000 - ok
CRTC(36):[2]  3840x2160 30 3840 4016 4104 4400 2160 2168 2178 2250 0x5 0x40
296703 - ok
CRTC(36):[3]  3840x2160 25 3840 4896 4984 5280 2160 2168 2178 2250 0x5 0x40
297000 - ok
CRTC(36):[4]  3840x2160 24 3840 5116 5204 5500 2160 2168 2178 2250 0x5 0x40
297000 - Input Not Supported
CRTC(36):[5]  3840x2160 24 3840 5116 5204 5500 2160 2168 2178 2250 0x5 0x40
296703 - Input Not Supported
CRTC(36):[6]  3840x2160 24 3840 3888 3920 4000 2160 2163 2168 2185 0x5 0x40
209800 - Input Not Supported
CRTC(36):[7]  2560x1440 60 2560 2608 2640 2720 1440 1443 1448 1481 0x9 0x40
241500 - corruption
CRTC(36):[8]  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x40
148500 - corruption
CRTC(36):[9]  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x40
148352 - corruption
.
.
.
CRTC(36):[44]  720x400 70 720 738 846 900 400 412 414 449 0x6 0x40 28320 -
corruption


Config:
======================================
kernel version              : 4.11.0-rc7-drm-tip-ww16-commit-1b75708+
architecture                : x86_64
os version                  : Ubuntu 16.10
bios revision               : 43.30
bios release date           : 04/11/2017
ksc                         : 1.25
libdrm                      : 2.4.80
cairo                       : 1.15.5
intel-gpu-tools (tag)       : intel-gpu-tools-1.18-86-gac1fe09
intel-gpu-tools (commit)    : ac1fe09


kernel parameters
======================================
quiet splash drm.debug=0xe i915.enable_guc_loading=2
i915.enable_guc_submission=2 i915.alpha_support=1 log_buf_len=4M


Attachments
======================================
igtOutput
demsgAfterTestdisplay
demsgAtBootHDMIandEDP

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