Re: [gentoo-user] Re: Extraordinarily laggy UI, keyboard, udev weirdness, KDE 4.5

[Paul Hartman <paul.hartman+gentoo@gmail.com>]

On Thu, Aug 12, 2010 at 11:44 AM, Nikos Chantziaras <realnc@arcor.de> wrote:
> On 08/12/2010 07:24 PM, Paul Hartman wrote:
>>
>> [...]
>> In X the UI responsiveness randomly goes bad, keyboard especially. At
>> first it'll be fine, then simply using Konsole and typing will begin
>> to slow down. Also, screen output in general seems to freeze until I
>> touch the mouse or keyboard. Even something like listing a directory.
>> It's really weird... It gets so bad that it becomes completely
>> unresponsive, freezing for minutes at a tie. It eventually un-freezes
>> momentarily, long enough to logout and back in at least. I disabled
>> desktop effects but it still had the same problem. I tried Gnome
>> briefly last night before going to sleep and didn't experience this
>> slowdown problem.
>>
>> Anyone else had those same problems or know what I might try? I'm
>> using nvidia-drivers and tried 3 different versions with no success. I
>> have not yet tried downgrading my kernel or KDE installation, but
>> that's next on the list of things to try tonight.
>
> I suppose you're running a complete ~arch system, not just some packages?
>
> Also, I had a somewhat similar problem with GUI slowness.  It was a matter
> of disabling the "Use VSync" checkbox in System Settings->Desktop
> Effects->Advanced tab and enabling the "Disable functionality checks" box in
> the same tab.  Note that the desktop and all apps will keep being tear-free
> and VSynced even if making those changes in System Settings.
>
> Furthermore, I've set:
>
>  CheckIsSafe=false
>
> in my ~/.kde4/share/config/kwinrc
>
> After all that, KDE 4.5.0 runs perfectly for me using
> gentoo-sources-2.6.35-r1, xorg-server-1.8.99.905, and the following live
> (9999) packages:
>
> media-libs/mesa
> x11-proto/glproto
> x11-proto/dri2proto
> x11-libs/libdrm
> x11-drivers/xf86-video-ati
>
> Using KMS.

I'm using nvidia-drivers, and didn't try the -9999 version of those
last few packages but otherwise tried the rest of your suggestion.
Tried also upgrading to qt-4.7.0_beta2 but still having the freezing
problems. It happens even without desktop effects enabled, just plain
2D mode. So it seems something is just not right... will keep
experimenting.