Re: Intermittent blank screen – Stretch

[Mike <m99@kaikohe.net>]

On 02/06/18 08:11, floris wrote:
> Mike schreef op 2018-06-01 01:27:
> > I have just installed Stretch and and randomly getting a 2 second (or
> > so) blank screen. I can go for quite some time without it happening,
> > or it can happen several times over a few minutes. I can dual boot
> > with Jessie and do not have the problem with that – so I think I can
> > rule out a hardware issue.
> >
> > I have an Nvidia GTX1050 video card, HDMI output to a Samsung 49" TV,
> > 4K video. There is no other type of input into the TV for me to be
> > able to test.
> >
> > Here is what I have done
> > 1. Installed Stretch (amd64) with XFCE
> > 2. apt-get install firmware-linux nvidia-driver nvidia-settings 
> > nvidia-xconfig
> > 3. run nvidia-xconfig
> > 4. turned off screen blanking in power settings
> >
> > I am quite happy to spend time troubleshooting, but don’t really know
> > where to start. The blanking happens too quickly for me to be able to
> > do anything at the time.
> >
> > Does anyone have any thoughts?
> >
> > Thanks
> >
> > Mike
>
> You can try the NVidia driver module from backports [1] and/or run 
> journalctl -f in a terminal and wait for the blank screen.
>
> [1] https://packages.debian.org/stretch-backports/nvidia-driver
> ---
> Floris
Okay, now here is a weird thing.

I just unplugged a USB cable that was, in turn, connected to a 
microcontroller. My screen went blank. When I plugged in back in it went 
blank again. This happened about 4 times until I could plug and unplug 
without the blanking. I left it for 30-odd seconds and was able to do 
the same thing. It did not happen when I unplugged my computer keyboard, 
or my USB camera.

Does this give anyone any ideas?

Thanks.

Mike