Re: Blank screen bug

[Richard Owlett <rowlett@cloud85.net>]

On 09/23/2017 05:01 AM, Tim wrote:
> Hi,
>
> I would like to report a bug for Debian stretch, however, I'm not sure
> which package I should file the bug against. Moreover, I haven't found
> a way to debug the issue either.
>
> I've recently done a fresh installed of stretch on an HP EliteBook 840
> notebook. Since then, the laptop's screen sometimes turns blank, i.e.,
> as if there is no input to the screen. Strangely enough, whenever I
> attach another display, the other display doesn't go blank: It's only
> the internal display of the laptop itself that turns completely black.

[snip]

> I hope you can tell me which package I should file the bug to, or how
> to proceed from here.

Your phrasing causes me to wonder if you have a new hardware problem.
I suggest trying a Live-CD 
<http://cdimage.debian.org/mirror/cdimage/archive/> of the release of 
Jessie you had been using.

HTH