blackened screen 2

[Richard Vickery]

Hi gang:

I'm on F20. The only way I get a screen that anyone can see is not by
using the portable computer's screen, but plugging it into another
screen. I tried going into the "Power" control but it's already on
maximum brightness. Any Ideas on how else I might try to fix it?

Thanks,

Richard

[kevin martin]

On 09/09/13 13:31, Richard Vickery wrote:
> Hi gang:
>
> I'm on F20. The only way I get a screen that anyone can see is not by
> using the portable computer's screen, but plugging it into another
> screen. I tried going into the "Power" control but it's already on
> maximum brightness. Any Ideas on how else I might try to fix it?
>
> Thanks,
>
> Richard

Y'know, I just had this problem with an HP laptop and had to replace the screen.  I could *barely* see that the screen had something
on it if I shined a flashlight on it at different angles.  It turned out to be a bad screen.  FWIW, this was with Knoppix but the
screen was definitely bad.  Screens on laptops are fairly easy to replace, FWIW.  Lots of videos on how to do it and the screens
tend to be < $100.

Otherwise, I couldn't tell you what might be happening.

Good luck.

Kevin

[cornel panceac]

2013/9/9 Kevin Martin
> On 09/09/13 13:31, Richard Vickery wrote:
> > Hi gang:
> >
> > I'm on F20. The only way I get a screen that anyone can see is not by
> > using the portable computer's screen, but plugging it into another
> > screen. I tried going into the "Power" control but it's already on
> > maximum brightness. Any Ideas on how else I might try to fix it?
> >
> > Thanks,
> >
> > Richard
>
> Y'know, I just had this problem with an HP laptop and had to replace the
> screen.  I could *barely* see that the screen had something
> on it if I shined a flashlight on it at different angles.  It turned out
> to be a bad screen.  FWIW, this was with Knoppix but the
> screen was definitely bad.  Screens on laptops are fairly easy to replace,
> FWIW.  Lots of videos on how to do it and the screens
> tend to be < $100.
>
> Otherwise, I couldn't tell you what might be happening.
>
> Good luck.
>
> Kevin

another idea: could it be you have an (intel) adapter that 'thinks' you
have two displays, and instead you only have one? i mean, the background is
black both on portable's display and on external display?

[cornel panceac]

2013/9/9 cornel panceac
> 2013/9/9 Kevin Martin
> > On 09/09/13 13:31, Richard Vickery wrote:
> > > Hi gang:
> > >
> > > I'm on F20. The only way I get a screen that anyone can see is not by
> > > using the portable computer's screen, but plugging it into another
> > > screen. I tried going into the "Power" control but it's already on
> > > maximum brightness. Any Ideas on how else I might try to fix it?
> > >
> > > Thanks,
> > >
> > > Richard
> >
> > Y'know, I just had this problem with an HP laptop and had to replace the
> > screen.  I could *barely* see that the screen had something
> > on it if I shined a flashlight on it at different angles.  It turned out
> > to be a bad screen.  FWIW, this was with Knoppix but the
> > screen was definitely bad.  Screens on laptops are fairly easy to
> > replace, FWIW.  Lots of videos on how to do it and the screens
> > tend to be < $100.
> >
> > Otherwise, I couldn't tell you what might be happening.
> >
> > Good luck.
> >
> > Kevin
>
> another idea: could it be you have an (intel) adapter that 'thinks' you
> have two displays, and instead you only have one? i mean, the background is
> black both on portable's display and on external display?

if yes, take a look here:

https://mail.google.com/mail/?shva=1#search/d525mw/13f15ad077bdc14c

[Dennis Jacobfeuerborn]

On 09.09.2013 20:31, Richard Vickery wrote:
> Hi gang:
>
> I'm on F20. The only way I get a screen that anyone can see is not by
> using the portable computer's screen, but plugging it into another
> screen. I tried going into the "Power" control but it's already on
> maximum brightness. Any Ideas on how else I might try to fix it?

What hardware do you have and what kernel version are you running?
There are problems with certain laptop displays and the intel driver 
with kernel 3.10+ when booting in UEFI mode on those systems.

Regards,
   Dennis