Re: [SLUG] Restore laptop screen after use in Google Sydney seminar room?

[Ben Donohue]

This is not a problem with the laptop.
It is a normal function.

There is a function key and one of the F keys on the keyboard.

You press the function and the F key (like F1 or F2 etc) and it cycles 
around.


First cycle = laptop only
Second cycle = external monitor only
Third cycle = both laptop and external
Then back to first cycle.

Just look for a function key and one of the F keys.
also it can take a second or two for the thing to work so wait a bit 
before trying another cycle.


Ben


On 12/05/2012 10:35 AM, Tom Worthington wrote:
I plugged the video cable into my laptop to give a presentation at the 
Slug meeting in the Google Sydney seminar room last Friday. As soon as 
I plugged the cable in, my laptop screen went blank and has not worked 
since.


The laptop works fine with an external monitor connected. Also the 
backlight on the laptop lights but nothing is displayed. I have tried 
changing the display settings and booting from a different Ubuntu on a 
flash drive. These work fine, with an external monitor, just not the 
laptop screen.


This is the same Kogan Agora laptop I used at Slug in the same room at 
Google Sydney last year, when it worked fine: 
http://blog.tomw.net.au/2011/06/kogan-agora-laptop-at-sydney-linux.html


Any suggestions?




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Re: [SLUG] Restore laptop screen after use in Google Sydney seminar room?

[peter]

> "Tom" == Tom Worthington  writes:

Tom> I plugged the video cable into my laptop to give a presentation
Tom> at the Slug meeting in the Google Sydney seminar room last
Tom> Friday. As soon as I plugged the cable in, my laptop screen went
Tom> blank and has not worked since.


Hmmm.
Tom> The laptop works fine with an external monitor connected. Also
Tom> the backlight on the laptop lights but nothing is displayed. I
Tom> have tried changing the display settings and booting from a
Tom> different Ubuntu on a flash drive. These work fine, with an
Tom> external monitor, just not the laptop screen.

If it works with an external monitor, get yourself an xterm or similar
and type
xrandr

This'll show you what video outputs the X server thinks are connected.
You're looking for one that says LVDS or similar.

If there's one there, it may be called LVDS or LVDS1 or LVDS-0 or
something like that.

Type
xrandr --output LVDS --auto
and it should come good.  (Use whatever the actual name was in the
xrandr output).


Peter C
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Re: [SLUG] Restore laptop screen after use in Google Sydney seminarroom?

[Tom Worthington]

On 05/12/12 11:32, kfos...@tpg.com.au wrote:

Often on the number keys is a different colour picture of a screen (box
inside a box in yellow or brown) and a function key ...


On the Kogan Agora laptop I used to hold down the function key and press 
DEL to cycle through the laptop LCD screen, both the LCD screen and 
external monitor, or just the external monitor. But now it just 
activates the back-light of the LCD monitor (no image), the back-light 
and external display or just the external display.


ps: Is there a small screen (about 11.6 inch display) low cost (under 
$500) laptop replacement anyone could recommend?



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Re: [SLUG] Restore laptop screen after use in Google Sydney seminarroom?

[Michael Chesterton]

On Thu, Dec 6, 2012 at 8:32 AM, Tom Worthington  wrote:

> ps: Is there a small screen (about 11.6 inch display) low cost (under
> $500) laptop replacement anyone could recommend?
>

I just bought a chromebook for $249 plus about $70 in reshipping.

The battery lasts over 6 hours, you can hack it or install ubuntu. It boots
in seconds.

The only thing that annoys me is I haven't worked out the key combo to
switch tabs.
It's ctrl pg up and pg dn normally, but it has no pg up or pg dn keys,
that's alt arrow.

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Re: [SLUG] Restore laptop screen after use in Google Sydney seminar room?

[Tom Worthington]

On 05/12/12 21:24, pe...@chubb.wattle.id.au wrote:


... If it works with an external monitor, get yourself an xterm or similar
and type xrandr ...


Thanks, that shows "LVDS1" and "VGA1" connected, so the X server thinks 
the LCD screen is operating.



Type xrandr --output LVDS --auto and it should come good ...


No, still no image on the laptop LCD, just the back-light. So I guess it 
must be a hardware problem. I will check with Kogan.



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PO Box 13, Belconnen ACT 2617, Australia  http://www.tomw.net.au
Liability limited by a scheme approved under Professional Standards
Legislation

Adjunct Lecturer, Research School of Computer Science,
Australian National University http://cs.anu.edu.au/courses/COMP7310/
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Re: [SLUG] Restore laptop screen after use in Google Sydney seminar room?

[Norman Gaywood]

Do you get the BIOS messages on the screen if you restart it?


On 6 December 2012 13:28, Tom Worthington wrote:

> On 05/12/12 21:24, pe...@chubb.wattle.id.au wrote:
>
>  ... If it works with an external monitor, get yourself an xterm or similar
>> and type xrandr ...
>>
>
> Thanks, that shows "LVDS1" and "VGA1" connected, so the X server thinks
> the LCD screen is operating.
>
>  Type xrandr --output LVDS --auto and it should come good ...
>>
>
> No, still no image on the laptop LCD, just the back-light. So I guess it
> must be a hardware problem. I will check with Kogan.
>
>
>
> --
> Tom Worthington FACS CP, TomW Communications Pty Ltd. t: 0419496150
> PO Box 13, Belconnen ACT 2617, Australia  http://www.tomw.net.au
> Liability limited by a scheme approved under Professional Standards
> Legislation
>
> Adjunct Lecturer, Research School of Computer Science,
> Australian National University 
> http://cs.anu.edu.au/courses/**COMP7310/
> --
> SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
> Subscription info and FAQs: 
> http://slug.org.au/faq/**mailinglists.html
>



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NSW 2351, Australia

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http://mcs.une.edu.au/~normFax:   +61 (0)2 6773 3312

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