Created attachment 667317 [details] screenshot #1 Description of problem: konsole-4.9.4-1.fc18.x86_64 intermittently fails to write text in titlebar properly. Instead of writing legible text, konsole writes black spaces to titlebar. (See attachments). Version-Release number of selected component (if applicable): F18. Latest KDE updates pulled in as of midnight central time on 12-21-12. How reproducible: Intermittent. When windows are resized, sometimes the titlebar text is written properly, sometimes it is written as black spaces. Steps to Reproduce: 1. update KDE to latest packages 2. use konsole. 3. watch for title bar errors Actual results: black space in title bar in lieu of text Expected results: text Additional info: Video card: 01:00.0 VGA compatible controller: NVIDIA Corporation NV37GL [Quadro FX 330/GeForce PCX 5300] (rev a2) Video driver: [ 186.669] (II) NVIDIA dlloader X Driver 173.14.36 Wed Sep 12 00:56:02 PDT 2012 Xorg.0.log and screen snapshots attached as images. Please note: I have been using this video card and driver with F18 for a couple of weeks, and this error did not occur until I upgraded to the latest KDE packages this morning.
Created attachment 667318 [details] screenshot #2
Created attachment 667319 [details] Xorg.0.log
Created attachment 667569 [details] another screen shot Update: it seems that I may have been a bit premature in blaming this error on Konsole. I've started to notice the problem as well with other applications, such as an Adobe Reader pop-up window (see attachment). This suggests that it's a problem with the updated version of KDE window manager rather than Konsole. It's very difficult to catch a screen shot of the error, as the ksnapshot screen capture program sometimes implements a refresh of the screen and makes the error disappear.
NVidia driver bug, report directly to NVidia.