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Old 12-22-08, 10:18 AM   #1
artem
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Join Date: Jun 2006
Posts: 711
Unhappy [BUG REPORT] Konsole from KDE4 is unusable with bitmap or nonAA TrueType fonts

GPU: NVIDIA Corporation GeForce 8800 GT (rev a2)
GPU drivers: 177.82/180.xx
Kernel: 2.6.27.8
KDE: 4.2.0 beta 2/4.1.3
Distro: Fedora 9

Application: Konsole with Terminus font with fonts AA (antialiasing) turned off (anyway Terminus is a bitmap font so fonts AA cannot be turned on). Also you can use any TrueType font with disabled AA, the effect will be the same.

Run Midnight Commander in Konsole and press Ctrl+O many times - every single screen refresh will take at least two seconds(!) to complete with 100% CPU usage.

In Konsole from KDE 3.5.x Ctrl+O refreshes the screen up to 100 times a second with minor CPU usage.

I've tried all suggested performance tricks like:
nvidia-settings -a InitialPixmapPlacement=2 -a GlyphCache=1

xorg.conf ->
Option "PixmapCacheSize" "1000000"
Option "AllowSHMPixmaps" "0"
Attached Files
File Type: bz2 nvidia-bug-report.log.bz2 (34.4 KB, 260 views)

Last edited by artem; 12-23-08 at 11:10 AM. Reason: corrected the post
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