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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - sna: (Haswell) X-server freezes when enabling DP at docking station"
href="https://bugs.freedesktop.org/show_bug.cgi?id=71267#c77">Comment # 77</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - sna: (Haswell) X-server freezes when enabling DP at docking station"
href="https://bugs.freedesktop.org/show_bug.cgi?id=71267">bug 71267</a>
from <span class="vcard"><a class="email" href="mailto:jacek@strongowski.com" title="jacek s <jacek@strongowski.com>"> <span class="fn">jacek s</span></a>
</span></b>
<pre>Hello,
I have the same problem, maybe I can contribute with some more data to solve
this.
If I can provide any more data, let me know how and I will.
OS: Ubuntu 10.13 (GNOME) + apt-get upgrade
Hardware:
Lenovo docking station Thinkpad Ultradock
Lenovo x240 (only VGA and mini DP output)
Behaviour regarding screens/docking stations:
1)
Docking station connected to AC adapter.
Docking station connected via HDMI<->HDMI to an LCD screen.
OS loaded(booted) , user logged in.
Result:
When I dock the laptop screen freezes, nothing moves, I dont see anything I
type.
When I undock the laptop everything unfreezes and I see everything I've typed
when it was frozen. I can repeat it all the time.
2)
Docking station connected to AC adapter.
Docking station connected via DiplayPort<->DVI to an LCD screen.
OS loaded(booted) , user logged in
Result:
Same as above
3)
Docking station connected to AC adapter.
Docking station connected via DiplayPort<->DVI to an LCD screen.
I dock the laptop when its off and then start it.
Result:
Initial sequence visible, then screen goes blank (backlight on).
When I undock it I see user login screen.Operational.
4)
Docking station connected to AC adapter.
Docking station connected via HDMI<->DVI to an LCD screen.
I dock the laptop when its off and then start it.
Result:
Same as above
5)
Docking station NOT connected to AC adapter.
Docking station connected via HDMI<->HDMI to an LCD screen.
Result:
When I dock the laptop it do not freezes, remains operational but nothing
happens with the screen.
6)Docking station NOT connected to AC adapter.
Docking station connected via DVI<->HDMI to an LCD screen.
Result:
Same as above.
7) Connecting laptop directly thru miniDP or VGA was not tested yet.
Best Regards
Jacek</pre>
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