Increasing colour depth

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mepisuser
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Increasing colour depth

#1 Postby mepisuser » Sun Apr 29, 2012 11:52 am

Using M11 with GeForce 6200 AGP card / HannsG HH241 monitor.

According to Xorg.conf, the colour depth is 24

Can I increase this to 32 which I assume refers to 32bit?

Editing xorg.conf directly, KDE failed to launch.

What's the right approach?

Thanks

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richb
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Re: Increasing colour depth

#2 Postby richb » Sun Apr 29, 2012 12:00 pm

mepisuser wrote:Using M11 with GeForce 6200 AGP card / HannsG HH241 monitor.

According to Xorg.conf, the colour depth is 24

Can I increase this to 32 which I assume refers to 32bit?

Editing xorg.conf directly, KDE failed to launch.

What's the right approach?

Thanks

Setting it to 32 will probably make no appreciable difference.

Many modern desktop systems (Mac OS X, GNOME, KDE, Windows XP/Vista/7, etc...) offer an option for 24-bit truecolor with 8 bits for an alpha channel, which is referred to as "32-bit color". When switching to an 8/16/24-bit color option in those systems, generally transparency/translucency effects are disabled, and the only reduction in color depth is seen when going to 8/16-bit color.


http://en.wikipedia.org/wiki/Color_depth

The extra 8 bits are used for transparency.
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Re: Increasing colour depth

#3 Postby mepisuser » Sun Apr 29, 2012 1:03 pm

Thanks for that richb.

I just had the idea that increasing colour depth might remove the black dashes from across the top of the screen which I'm advised is a Plymouth issue!

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Re: Increasing colour depth

#4 Postby DBeckett » Mon Apr 30, 2012 4:10 pm

mepisuser wrote:I just had the idea that increasing colour depth might remove the black dashes from across the top of the screen which I'm advised is a Plymouth issue!

A workaround for that is to press Ctrl+Alt+F1, then press Ctrl+Alt+F7.
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mepisuser
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Re: Increasing colour depth

#5 Postby mepisuser » Mon Apr 30, 2012 4:18 pm

Thanks for that DBeckett - it worked, the black dashes have gone!

What does Ctrl+Alt+F1 / Ctrl+Alt+F7 actually do?

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Re: Increasing colour depth

#6 Postby mepisuser » Mon Apr 30, 2012 4:24 pm

Apologies DBeckett


What I should have asked, to be more precise, is what does the key sequence do regarding Plymouth when switching to console and back to desktop to solve the black dashes problem?

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Re: Increasing colour depth

#7 Postby DBeckett » Mon Apr 30, 2012 6:16 pm

mepisuser wrote:Apologies DBeckett

What I should have asked, to be more precise, is what does the key sequence do regarding Plymouth when switching to console and back to desktop to solve the black dashes problem?

My best guess is that it changes some obscure parameter in the Nvidia driver. Perhaps someone smarter than I can be more specific.

My own solution was to uninstall Plymouth, which I never cared much about anyway.
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Re: Increasing colour depth

#8 Postby mepisuser » Wed May 02, 2012 4:25 am

If its a issue of how the Nvidia driver software and Plymouth work together then would I be right in thinking someone with coding experience can code a fix and post the solution on the forum?

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Re: Increasing colour depth

#9 Postby Utopia » Wed May 02, 2012 11:54 am

If its a issue of how the Nvidia driver software and Plymouth work together

Don't think any of the regular forum members can write code. And even if they could, Nvidia drivers are very difficult to hack. The standard solution is to remove Plymouth. It fills no purpose and is only there because the reviewers expect it in a modern distribution.
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