Web lists-archives.com

Re: Blank screen bug

On Sat 23 Sep 2017 at 12:01:31 (+0200), 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.

Does the screen turn blank after a random time, or at the time of
an event (like starting X, or starting an application, or some
heavy processing etc). After a minute or half an hour?
Is the screen really black or just very dark?
What happens if you select a VC, or exit X? … … …

> I've tried to debug the issue by looking a various log files (e.g.,
> ~/.local/share/xorg/Xorg.0.log, /var/log/kern.log, running
> `journalctl`), but nothing would show up in these logs whenever it
> occurs. I also tried to install `firmware-linux-nonfree` but that
> didn't help either. Before, I was using jessy without the bug.
> I hope you can tell me which package I should file the bug to, or how
> to proceed from here.