Comments on: KDE 4.2 (trunk) Now Rocking On My Thinkpad T61!!!

By: Jason 'vanRijn' Kasper

Jason 'vanRijn' Kasper — Thu, 09 Oct 2008 17:33:27 +0000

@Wolf Beat: The only thing of relevance is the nvidia-settings line I’ve listed here. I put it in my ~/.xsession and have kdm start my “Default” session instead of “KDE”, etc.

By: Wolf Beat

Wolf Beat — Wed, 08 Oct 2008 20:27:42 +0000

Where is that x startup script? because those settings help too here

By: nVidia 177.80 Released!

nVidia 177.80 Released! — Wed, 08 Oct 2008 14:16:08 +0000

[...] crap. KDE 4.2 frickin’ flies! And contrary to my previous post, now if I set IPP=2, everything’s blazing fast and I’m actually able to resize konsole [...]

By: Jan

Jan — Tue, 07 Oct 2008 21:26:45 +0000

Thank you. I took your post as a “kick in the rear” to finally install some newer drivers than the ubuntu-build-in ones.

I actually could work pretty well beforehand (8600 GTS, obviously not “on-board” ) but now it’s so much better…

*oftoadmirethenewgraphicsgoodnes*

By: Boycott Novell » Links 5-6/10/2008: A Look at Omega GNU/Linux, Mandriva 2009 RC2; Linux Turns 17

Mon, 06 Oct 2008 19:07:09 +0000

[...] KDE 4.2 (trunk) Now Rocking On My Thinkpad T61!!! [...]

By: txf

txf — Sat, 04 Oct 2008 00:47:05 +0000

You get better performance without subpixel hinting, but it also becomes quite a bit more unpleasant to read :/

The nvidia pple said they had some problems dealing with Qt4 font aa, but now I’d say it is mostly fixed.

I’d say that if you’re happy with the way it looks and performs then leave it the way it is. If you want full hinting then you’ll probably start paying a price in not having the glyph cache.

However I absolutely cannot have ipp=1 as plasma and heavy text pages in konq become impossible to use. So, I guess what I’m saying is to play around with it, as I dunno how useful my advice is…

By: Jason 'vanRijn' Kasper

Jason 'vanRijn' Kasper — Sat, 04 Oct 2008 00:07:38 +0000

Hiya @txf! Wow, thanks for the information!! This is awesome! To answer your question, in KDE4 system settings > Appearance > Fonts, I have “Use anti-aliasing” Enabled, with sub-pixel rendering turned on (RGB) and “Hinting style” set to Slight. Are you saying that I’d get better performance if I didn’t have subpixel hinting enabled?

By: maninalift

maninalift — Fri, 03 Oct 2008 21:59:08 +0000

Wow, I hadn’t tried that benchmark for a while it used to take tens of seconds, now it is faster than the SVG test at ~1.0 seconds.

Window resizing still isn’t smooth though.

By: txf

txf — Fri, 03 Oct 2008 21:27:11 +0000

your gpu in your laptop is equivalent to the geforce 8400m, and as far as I’m aware, it tends to share sysmem (through turbocache) hence why ipp=1 is faster than ipp=2 (1 pixmaps are created in sysmem, 2 pixmaps are created in vidmem).

BTW if you use ipp=1 then the glyphcache does not work (cached pixmaps have to stay in vidmem)

I have to say though that I’m surprised it works well without a glyphcache. For me (8600m) kde crawls if it is disabled. Do you have font subpixel hinting enabled? ‘cos that is the only way I can see it being fast (based on my experiences but I haven’t tried different settings recently)?

By: Jason 'vanRijn' Kasper

Jason 'vanRijn' Kasper — Fri, 03 Oct 2008 20:10:32 +0000

Hiya Andras! =:) Yeah, I noticed that X takes a REAL long time to start. I’m pretty sure it’s because of all the extra stuff they’re doing because it’s a beta driver. And sadly, I can’t get suspend to disk or suspend to ram to work reliably for me. I’ve given up on it, to be honest. =:/