screen flashes at native resolution

[neil]

Hi. I'm a noob, so I'm sorry if I appear stupid, but can anyone help me?

At native res. (1080 x 1920, 60Hz) the screen flashes, seemingly at random.
At 1080 x 1920 24 Hz it's okay, but frames are missing, of course.
At 1080 x 1920 other speeds, pic a little blurry and flashes.
Same problem when I tried Ubuntu.
All works fine with XP.

Mobo is Trigem/Advent, chipset: i848/ i865, i865p
Graphics ATI 128MB, DVI out
Screen is Panasonic TV, HDMI in

[valtam]

Does it do this with a regular pc monitor and not a TV?

[neil]

Hi Jerry. Thanks for your reply.

I don't have a monitor to try it with, only three different TVs. I could try with my son's 1080p TV.
It's fine at 720p, either DVI to HDMI or DVI to HD15 into my Panasonic TV, no need for 24Hz.
I could probably borrow an old 720 monitor from a neighbour. Should I do that?

[valtam]

I could probably borrow an old 720 monitor from a neighbour. Should I do that?

Yes, anything but a TV. TV's and Monitors aren't as similar as people presume. It must be a pc monitor (LCD or LED)

[ptyerman]

TV's do have some quirks regarding resolutions and refresh rates, different TV's can bring different results. The VGA in part of a TV was only designed with basic usage in mind as a afterthought.
You would do better setting up on a proper monitor and then try your TV, you would also gain some knowledge of your TV's quirks and nuances that way.

[neil]

Sorry, no monitor, Jerry.

I tried with Samsung 1080p TV and it's fine at 60HZ. DVI into HDMI.

So, it's a quirk of my Panasonic TV? Can anything be done?

[valtam]

[member=5531]ptyerman[/member] explained it well.

Remember this...right tool for the right job

[neil]

Okay, thank you both!

I've got one! A Plain Tree Systems 17" 1280x1024, 60.0Hz. From the VGA output, all works fine.

What should I do now?

[valtam]

What should I do now?

Pop off down the road to the Pub and enjoy a pint.

[neil]

'Pop off down the road to the Pub and enjoy a pint.'

No, this little monitor is dire. I want to watch films on my awesome, big TV. I could go back to XP and do that.


@pyterman, 'You would do better setting up on a proper monitor and then try your TV, you would also gain some knowledge of your TV's quirks and nuances that way.'

Please tell me more about this!