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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - i915:No display with Display port [drm:intel_dp_start_link_train] *ERROR* too many full retries, give up"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90963#c65">Comment # 65</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - i915:No display with Display port [drm:intel_dp_start_link_train] *ERROR* too many full retries, give up"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90963">bug 90963</a>
from <span class="vcard"><a class="email" href="mailto:sassmann@redhat.com" title="sassmann@redhat.com">sassmann@redhat.com</a>
</span></b>
<pre>My setup is the following:
Lenovo w541 docked in ThinkPad Dock with lid close (permanently).
U3415W display connected via DP as the only display.
Following is the current behaviour with latest drp-tip 4.12-rc4.
- Display turns on during BIOS init (grub is fine)
- When booting the kernel a modeswitch happens, this seems to be fine now as
well. Display comes back to display boot messages in a different resolution.
- Another switch happens when gdm is starting. This time the display goes into
standby mode. Then I can switch to VT2 and display comes back to life showing
the login prompt. If I then switch back to VT1 where gdm is running, magically
the gdm login screen shows up and I can login.
- However then locking the screen causes the display to go back into standby
and there's probably a 50% chance of the display never to wake up again. At
this point switching to VT2 also no longer brings the display back.
Attaching another dmesg from exactly that scenario.</pre>
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