📎 AI Summary:
The user is seeking help with adjusting the brightness on their TV when connected to a laptop via HDMI, as changes made on the laptop only affect its screen and not the TV. Throughout the thread, the user is guided to identify their graphics hardware and install the AMD Catalyst Control Center to adjust display settings. The overall discussion is technical, with the main conclusion being that proper driver and software adjustments are needed on the laptop to control the TV's brightness, and these steps should be performed on the laptop itself.
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masri99

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Feb 19, 2012
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Thread Author #1
hi guys, i'm having trouble adjusting my screen brightness on my TV when it's connected via a HDMI cable to my laptop. If i try to increase the brightness through my laptop (VAIO VGN-SR) it does so only on my laptop display, while my TV remains the same. Instead if i try to do the opposite, adjusting the brightness through my TV (Panasonic TX-L32D25E) it doesn't change anything whatsoever. The thing is everytime i watch a movie through my laptop the screen brightness on my TV is too dark and i can't adjust it, however if i watch the other normal channels i can adjust the screen brightness without any problems. Does anybody know how i can increase the brightness on my TV when connected to a laptop? Is it an issue regarding the computer rather than the output device?
thank you
 

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brian56

brian56

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May 22, 2010
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#21
see page 91 (and 100) >>> Link Removed - Invalid URL
 

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masri99

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Thread Author #22
it mentions to use the VAIO control center to adjust screen resolution to the output display, could that be the solution?
 

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brian56

brian56

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#23
yes see if the instructions are right im sure the hdmi will work i was just seeing what other things we could try also check what the tv says about connecting to the hdmi ports
 

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masri99

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Thread Author #24
unfortunately the VAIO control center doesn't mention anything about the screen brightness for an output display :(
 

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masri99

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Thread Author #25
i just noticed that the screen brightness on my TV does change but very little there is almost no difference between the maximum brightness and the minimum brightness, this happens only when my laptop is connected. Without it, when i watch normal channels, the brightness does significantly vary
 

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brian56

brian56

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#27
see page 58 and 92 and 97 >>> Link Removed - Invalid URL
 

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brian56

brian56

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May 22, 2010
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#29
Link Removed - Invalid URL


you will need a browser with a pdf reader i cant upload the tv manual because its over the 5MB limit
 

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brian56

brian56

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#30
i have uploaded the file here for you >>> Link Removed see page 58 and 92 and 97 >>>
 

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