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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [GLK] [IGT] testdisplay -a shows corruption on HDMI 4k display"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100440#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [GLK] [IGT] testdisplay -a shows corruption on HDMI 4k display"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100440">bug 100440</a>
from <span class="vcard"><a class="email" href="mailto:luis.botello.ortega@intel.com" title="Luis Botello <luis.botello.ortega@intel.com>"> <span class="fn">Luis Botello</span></a>
</span></b>
<pre>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</pre>
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