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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [GLK] [IGT] testdisplay -a shows corruption on HDMI 4k display"
href="https://bugs.freedesktop.org/show_bug.cgi?id=100440#c18">Comment # 18</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [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>(In reply to Ander Conselvan de Oliveira from <a href="show_bug.cgi?id=100440#c17">comment #17</a>)
<span class="quote">> (In reply to Luis Botello from <a href="show_bug.cgi?id=100440#c16">comment #16</a>)
> > Issue is not seen anymore with that patch series. But display is showing no
> > image while running ./testdisplay -a and it goes into the following
> > resolution:
> >
> > CRTC(36):[7] 2560x1440 60 2560 2608 2640 2720 1440 1443 1448 1481 0x9 0x40
> > 241500
> >
> > Is there some way to force it or to set a higher timeout between each
> > resolution?
>
> $ ./testdisplay -h
> usage: ./testdisplay [-hiasdpmtf]
> ...
> -s <duration> sleep between each mode test</span >
After testing testdisplay on HDMI I am getting "No Signal" on HDMI screen while
test sets CRTC(36):[7] 2560x1440 60 2560 2608 2640 2720 1440 1443 1448 1481
0x9 0x40.
Also as additional info I am getting extra low performance while 3840x2160
resolution is set on HDMI, and no signal if 2560x1440 resolution is set in UI.</pre>
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