KDE lag and artifacts

Hi, im very new in linux.
I used other distros (manjaro for example) with kde preinstalled and i dont had any issues.
After arch installation, i installed with pacman the propietary drivers of nvidia for my gtx 260 and then kde.
Sometimes when minimize/maximize a window, kde feels slow.
I do a pacman -Syu that update the graphics drivers. Reboot the system and only saw a black screen. I try start X and KDE, but i cant.
I uninstalled nvidia drivers and installed noveau. The same black screen. I installed again nvidia drivers (the old version, from pacman cache) and now all is like in the begining.
KDE runs fast and ocasionally lags a lot. Also, i have an 'artifact' (see the image below).
I also try changing openGL version, Qt graphics system and vsync in system settings => desktop effects, but don't fix my problem.
Also disable oxygen effects, but its the same.
The artifact is the white rectangle in the title bar. If the window isn't maximized i have no problem.
The image link: http://i61.tinypic.com/2448y91.png
I don't use [img*] because the screen is big.
Thanks a lot and sorry for my bad english.
Last edited by Zhirose (2014-10-05 23:38:32)

KDE is a pretty heavy-weight desktop environment. You should expect some lag if you're running on relatively old hardware.
That being said, you can change some settings around to make sure you're getting the best performance out of your system.
1) Make sure you're using the proper drivers for your graphics card.
If you want to use the proprietary nvidia driver, make sure you're using the proper version. There are three versions of the nvidia proprietary drivers (one new and two legacy). I recommend checking all three to deterine which best supports your hardware. See [1].
2) Tweak some KDE settings in "System Settings > Desktop Effects"
If you're on an nvidia card, you're safe to use OpenGL 3.1 as your compositing type [2]. Furthermore, various sources [3] (including the tool tip if you mouse over the box) recommend using Raster when using OpenGL.
Finally, see how smooth things get by toggling all desktop effects (Alt+Shift+F12). If you can live without compositing and nice effects, that's a good way to make KDE run faster. You can make this change persistent by unchecking "Enable...startup" under the "General" tab.
[1] https://wiki.archlinux.org/index.php/NVIDIA#Installing
[2] https://developer.nvidia.com/opengl-driver
[3] https://userbase.kde.org/Desktop_Effect … ics_System
EDIT: typo
Last edited by v1rous (2014-10-06 13:53:23)

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RotoProne wrote:
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LR5 is great and is all I need for the majority of my images. Unfortunately for me, though, that usability also necessitates the Spot Removal Tool's unhindered functionality.

For some reason, it's clear that not everyone is experiencing such a massive slowdown / bottleneck when it comes to the Spot Removal Tool. If all users experienced this issue to this degree, they would have been clamoring for Adobe to address and rectify it immediately.
With all due respect, Sean, to make a suggestion like that proves you do not experience / have not experienced this issue / don't understand the severity to which this issue can affect workflow; simply "turning off noise reduction and lens correction" is definitely not a fix. If 16GB of RAM doesn't fix the issue, do you really think simply turning off noise reduction will? And as Bert Nase points out, to do that to large volumes of images increases workflow in a program designed to streamline workflow for large volumes of images.
1- One option is to change the process version in your first photo (2003/2010), then copy-paste that develop setting to the rest of your images. This will get all of your images to the point in your workflow where you can use the Spot Removal Tool on each image. Once spot removal is done, reconvert each image back to the current process version (2012) then re-accomplish the spots that reconverting lost.
2- Configuring presets is one work-around option, though you will need at least couple of them tailored to your workflow.
3- Changing your import settings to an earlier Process Version is an option, then accomplishing Spot Removal on each photo, then updating the Process Version on one and copy/paste to the rest, then re-accomplishing for each photo the spots lost in the conversion and continuing your workflow from there.
Readers of this thread can use the link above, but it can introduce its own issues, too. As noted, switching back-and-forth between Process Versions can delete some of your already-corrected spots and you'll have to re-correct them. Worse, a window prompt asking to create a virtual copy or proof will occasionally begin popping up.. closing the window, clicking "cancel", or choosing any other option in that pop-up window won't be "remembered" and the window pops back up with any further "click" on the image. Lightroom has to be shut down and the computer restarted for the issue to reset.
Yes, it's very frustrating and time consuming to say the least. So, unfortunately there is no fix, still only work-arounds. Hopefully this issue will be addressed and remedied in either the coming release of 5.2 (doubtful) or the Cloud version of Photoshop + Lightroom.

KDE lag and artifacts

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