Bug#774020: systemd: black screen with backlight on start. rescue mode plus Ctrl-D allows normal boot

[Michael Biebl]

control: tags -1 moreinfo

Am 27.12.2014 um 14:58 schrieb allan grossman:
> Package: systemd
> Version: 215-8
> Severity: critical
> Justification: breaks the whole system
> 
>    * What led up to the situation?
> 
> Unknown.  First noticed the problem on reboot a couple of days ago.
> 
>    * What exactly did you do (or not do) that was effective (or
>      ineffective)?
> 
> Using grub option to boot into recovery then pressing Ctrl-D causes the machine
> to boot normally.
> 
>    * What was the outcome of this action?
> 
> Ctrl-D from rescue mode results in a normal boot.
> 
>    * What outcome did you expect instead?
> 
> Expected the system to boot without starting rescue mode first.
> 

Is the system completely locked up or can you e.g. access it via SSH?
What kind of hardware is this? If it's a laptop, can you attach an
external monitor to find out if it's a graphics issue / backlight issue.


Does the following help:
systemctl mask systemd-backlight at backlight:nv_backlight.service
systemd-backlight at backlight:acpi_video0.service

(don't forget to run systemctl unmask for the above two services after
you've completed the tests).




-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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