Bug 1547536

Summary:	Lenovo T470 freezes during boot when docked with lid closed
Product:	[Fedora] Fedora	Reporter:	alex
Component:	plymouth	Assignee:	Ray Strode [halfline] <rstrode>
Status:	CLOSED DUPLICATE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	27	CC:	elad, rstrode
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2018-02-27 09:26:55 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description alex 2018-02-21 14:05:22 UTC

Description of problem:

I've got the following setup:
-- Lenovo T470;
-- Ultra Dock (mechanical docking station);
-- an external monitor connected to the dock's HDMI output.

When I try to start the computer with the lid closed, the GRUB menu displays fine on the external monitor. Then the screen turns black and the monitor indicates it doesn't receive an HDMI signal anymore.

At that point, if I open the laptop's lid, I can see the Fedora logo on the laptop's screen, and it just stays there forever.

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Version-Release number of selected component (if applicable):

Fedora 27 fresh install (I don't know which component is concerned)

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How reproducible:

Always

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Steps to Reproduce:
1. Get a Lenovo T470, and install Fedora 27
2. Put the laptop on a Ultra Dock
3. Make sure the lid is closed
4. Connect an HDMI monitor to the dock
5. Turn on the computer using the dock's power button

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Actual results:

The external monitor turns black, the system seems to freeze during the boot process.

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Expected results:

The computer should boot, using the external monitor as only display.


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Additional info:

-

Comment 1 alex 2018-02-21 14:09:21 UTC

Additional info:

When the external monitor is connected to the laptop, and not to the dock, everything runs fine.

Comment 2 alex 2018-02-27 09:26:55 UTC


*** This bug has been marked as a duplicate of bug 1549169 ***