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certain kernel configs for more powerful games
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janga8
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Joined: 14 Jul 2014
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PostPosted: Mon Jul 14, 2014 6:46 am    Post subject: certain kernel configs for more powerful games Reply with quote

Hi all, new to Gentoo but managing, and so far I love it!
But I only have a weak laptop for now and cannot afford a better computer.
Unfortunately it is using Intel integrated graphics and they are terrible :(

My favorite game for the moment is TF2, and when i have run arch and Debian in the past it was, well playable and i averaged 20 FPS. Gentoo is just bellow the line that makes it playable as it is at around 10-15 FPS.

I read somewhere that a custom kernel can increase FPS (first install, so I used gen-kernel). What options should I use in USE variables and any kernel drivers/modules that I should/shouldn't use for a gaming computer.

Also disabling some unused modules for gaming (wifi, i use it but use Ethernet when gaming) is useful for gaming but not otherwise. So is it possible to have two kernels to interchange between using
Code:
eselect kernel set ?


Thanks in advance,
Janga
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Adel Ahmed
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Joined: 21 Sep 2012
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PostPosted: Mon Jul 14, 2014 11:56 am    Post subject: Reply with quote

I've disabled and built out many modules out of my kernel, the performance benefit was not that significant, at least not significant enough to impact my gaming experience, I doubt this approach will improve yours.

eselect kernel set sets the kernel sources in use(in case you have installed several kernel sources), just the /usr/src/linux symlink.
I believe your configuration is solely responsible for something like that

I'd start by checking if hardware rendering is enabled:
#glxinfo | grep rendering


you also should keep an eye out for use flags like opengl, vdpau(if your graphics card supports this feature) that more or less enable hardware acceleration as well
if you have the energy for it, you can use
$equery d <package name> to check the package's dependencies and track the use flags on each dependency

good luck
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janga8
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PostPosted: Tue Jul 15, 2014 9:32 am    Post subject: Reply with quote

Ok then, do you/anybody know how to get FPS increases in general and in TF2?

Thanks
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Adel Ahmed
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PostPosted: Tue Jul 15, 2014 9:41 am    Post subject: Reply with quote

make sure hardware rendering is enabled first, if it isn't you'll gain a massive FPS gain by configuring hardware acceleration
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janga8
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PostPosted: Wed Jul 16, 2014 2:26 am    Post subject: Reply with quote

Ok thanks i ran
Code:
glxinfo | grep rendering

It was not enabled and I am unsure about how to enable it. Is it from a X config file or intel settings or something else?

Thanks
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The Doctor
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Joined: 27 Jul 2010
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PostPosted: Wed Jul 16, 2014 2:45 am    Post subject: Reply with quote

This really isn't hard information to find: http://wiki.gentoo.org/wiki/Xorg/Hardware_3D_acceleration_guide
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