Bug 47431 - Black screen after installation in Hyper V
Black screen after installation in Hyper V
Status: RESOLVED WONTFIX
Product: UCS
Classification: Unclassified
Component: General
UCS 4.3
Other Linux
: P5 normal (vote)
: ---
Assigned To: UCS maintainers
UCS maintainers
:
: 49753 (view as bug list)
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2018-08-01 13:38 CEST by Valentin Heidelberger
Modified: 2021-05-14 16:34 CEST (History)
3 users (show)

See Also:
What kind of report is it?: Bug Report
What type of bug is this?: 5: Major Usability: Impairs usability in key scenarios
Who will be affected by this bug?: 1: Will affect a very few installed domains
How will those affected feel about the bug?: 2: A Pain – users won’t like this once they notice it
User Pain: 0.057
Enterprise Customer affected?:
School Customer affected?: Yes
ISV affected?:
Waiting Support:
Flags outvoted (downgraded) after PO Review:
Ticket number: 2019031521000464
Bug group (optional): External feedback
Max CVSS v3 score:


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Description Valentin Heidelberger univentionstaff 2018-08-01 13:38:46 CEST
Installing UCS in Hyper V is described here: https://wiki.univention.de/index.php/Cool_Solution_-_Installing_UCS_in_Microsoft_Hyper-V

The installation itself works but after the final reboot the screen stays black.

There is only quick video output from Grub and the Univention Boot Splash. Then however, the resolution is resized and the screen turns black.

Please feel free to move to this to another component because I'm not sure whats causing the problem here.
Comment 1 Erik Damrose univentionstaff 2018-08-01 14:58:41 CEST
Does the installation with the Hyper-V Image from https://www.univention.de/download/download-ucs/ work?
Comment 2 Nico Gulden univentionstaff 2019-05-08 11:17:19 CEST
See Ticket#2019031521000464 for more information about an environment where the case happens.

Furthermore, Erik has tested it with Windows 10 Pro and a generation 1 vm and could reproduce the problem. The UCS appliance is working though and the system setup starts. 

But the bootsplash is black and thus does not show the welcome screen with the IP address to use. This is very confusing to the user.
Comment 4 Arvid Requate univentionstaff 2019-06-28 14:47:26 CEST
Bug #39339 mentions something that may be related. According to that bug, setting the "nosplash" boot option in grub may be a workaround?
Comment 5 Erik Damrose univentionstaff 2019-07-23 09:40:53 CEST
A possible workaround is described here: https://help.univention.com/t/12570/4
-->
/etc/default/grub
i change the line to
GRUB_CMDLINE_LINUX_DEFAULT=""
and then
update-grub
after reboot everythink was OK
<--
Comment 6 Philipp Hahn univentionstaff 2019-09-02 09:25:04 CEST
*** Bug 49753 has been marked as a duplicate of this bug. ***
Comment 7 Ingo Steuwer univentionstaff 2021-05-14 15:41:18 CEST
This issue has been filed against UCS 4.3.

UCS 4.3 is out of maintenance and many UCS components have changed in later releases. Thus, this issue is now being closed.

If this issue still occurs in newer UCS versions, please use "Clone this bug" or reopen it and update the UCS version. In this case please provide detailed information on how this issue is affecting you.