From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040225 Firefox/0.8 Description of problem: When I connect, using KDE Remote Desktop Connection/Krfb to a second Fedora Core 2 machine running KDE, the machine I am connecting to goes to 100% CPU and stays there for the duration of the connect. The connect works, I can see and control the remote desktop, but X and krfb are sharing 100% CPU between them the whole time. I looked with tcpdump on the vnc port and there is no traffic while there is nothing happening on the screen and the pointer is not moved. HOWEVER, if I go look at the server's physical display, I see the mouse pointer is flickering like it is being constantly redrawn. THEREFORE this seems to be a problem at the sever constantly redrawing the mouse cursor even though there is no movement from the client or locally. As I say the connect is functional, just the server is at 100% CPU until I disconnect and so runs like treacle. Version-Release number of selected component (if applicable): kdenetwork-3.2.2-1 How reproducible: Always Steps to Reproduce: 1. Enable unrequested desktop connects at the server side 2. Use the Remote Desktop Connect app at the client to connect to the server Actual Results: See from top, etc that we are pegged at 100% CPU on an otherwise idle client, and that X and krfb are sucking it up Expected Results: CPU should remain near 0% on the idling server, if nothing is redrawing Additional info: top says.... Tasks: 102 total, 3 running, 99 sleeping, 0 stopped, 0 zombie Cpu(s): 76.2% us, 20.5% sy, 0.0% ni, 3.3% id, 0.0% wa, 0.0% hi, 0.0% si Mem: 240588k total, 238392k used, 2196k free, 30932k buffers Swap: 511992k total, 0k used, 511992k free, 105076k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1938 root 17 0 47464 11m 36m R 61.1 4.8 92:54.45 X 7009 media 15 0 34296 17m 20m S 33.3 7.3 45:49.75 krfb
More information on the xorg state: [root@backup root]# rpm -qa | grep xorg xorg-x11-Xvfb-6.7.0-2 xorg-x11-doc-6.7.0-2 xorg-x11-ISO8859-14-100dpi-fonts-6.7.0-2 xorg-x11-truetype-fonts-6.7.0-2 xorg-x11-75dpi-fonts-6.7.0-2 xorg-x11-devel-6.7.0-2 xorg-x11-tools-6.7.0-2 xorg-x11-libs-data-6.7.0-2 xorg-x11-sdk-6.7.0-2 xorg-x11-libs-6.7.0-2 xorg-x11-Mesa-libGL-6.7.0-2 xorg-x11-Mesa-libGLU-6.7.0-2 xorg-x11-xauth-6.7.0-2 xorg-x11-xfs-6.7.0-2 xorg-x11-syriac-fonts-6.7.0-2 xorg-x11-ISO8859-9-75dpi-fonts-6.7.0-2 xorg-x11-ISO8859-15-75dpi-fonts-6.7.0-2 xorg-x11-ISO8859-14-75dpi-fonts-6.7.0-2 xorg-x11-100dpi-fonts-6.7.0-2 xorg-x11-ISO8859-9-100dpi-fonts-6.7.0-2 xorg-x11-Xnest-6.7.0-2 xorg-x11-6.7.0-2 xorg-x11-twm-6.7.0-2 xorg-x11-xdm-6.7.0-2 xorg-x11-font-utils-6.7.0-2 xorg-x11-base-fonts-6.7.0-2 xorg-x11-ISO8859-2-75dpi-fonts-6.7.0-2 xorg-x11-ISO8859-15-100dpi-fonts-6.7.0-2 xorg-x11-cyrillic-fonts-6.7.0-2 xorg-x11-ISO8859-2-100dpi-fonts-6.7.0-2 [root@backup root]# cat /etc/X11/XF86Config # XFree86 4 configuration created by pyxf86config Section "ServerLayout" Identifier "Default Layout" Screen 0 "Screen0" 0 0 # InputDevice "Mouse0" "CorePointer" InputDevice "DevInputMice" "CorePointer" InputDevice "Keyboard0" "CoreKeyboard" EndSection Section "Files" # RgbPath is the location of the RGB database. Note, this is the name of the # file minus the extension (like ".txt" or ".db"). There is normally # no need to change the default. # Multiple FontPath entries are allowed (they are concatenated together) # By default, Red Hat 6.0 and later now use a font server independent of # the X server to render fonts. RgbPath "/usr/X11R6/lib/X11/rgb" FontPath "unix/:7100" EndSection Section "Module" Load "dbe" Load "extmod" Load "fbdevhw" Load "glx" Load "record" Load "freetype" Load "type1" Load "dri" EndSection Section "InputDevice" # Specify which keyboard LEDs can be user-controlled (eg, with xset(1)) # Option "Xleds" "1 2 3" # To disable the XKEYBOARD extension, uncomment XkbDisable. # Option "XkbDisable" # To customise the XKB settings to suit your keyboard, modify the # lines below (which are the defaults). For example, for a non-U.S. # keyboard, you will probably want to use: # Option "XkbModel" "pc102" # If you have a US Microsoft Natural keyboard, you can use: # Option "XkbModel" "microsoft" # # Then to change the language, change the Layout setting. # For example, a german layout can be obtained with: # Option "XkbLayout" "de" # or: # Option "XkbLayout" "de" # Option "XkbVariant" "nodeadkeys" # # If you'd like to switch the positions of your capslock and # control keys, use: # Option "XkbOptions" "ctrl:swapcaps" # Or if you just want both to be control, use: # Option "XkbOptions" "ctrl:nocaps" # Identifier "Keyboard0" Driver "keyboard" Option "XkbRules" "xfree86" Option "XkbModel" "pc105" Option "XkbLayout" "us" EndSection #Section "InputDevice" # Identifier "Mouse0" # Driver "mouse" # Option "Protocol" "IMPS/2" # Option "Device" "/dev/input/mice" # Option "ZAxisMapping" "4 5" # Option "Emulate3Buttons" "no" #EndSection Section "InputDevice" # If the normal CorePointer mouse is not a USB mouse then # this input device can be used in AlwaysCore mode to let you # also use USB mice at the same time. Identifier "DevInputMice" Driver "mouse" Option "Protocol" "IMPS/2" Option "Device" "/dev/input/mice" Option "ZAxisMapping" "4 5" Option "Emulate3Buttons" "no" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Monitor Vendor" ModelName "Iiyama MF-8721E, VisionMaster" HorizSync 27.0 - 110.0 VertRefresh 50.0 - 160.0 Option "dpms" EndSection Section "Device" Identifier "Videocard0" Driver "via" VendorName "Videocard vendor" BoardName "VESA driver (generic)" VideoRam 32768 Option "NoDDCValue" Option "ActiveDevice" "TV" Option "TVDotCrawl" "True" Option "TVType" "PAL" Option "TVVScan" "over" Option "TVOutput" "S-Video" EndSection Section "Screen" Identifier "Screen0" Device "Videocard0" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Depth 24 Modes "800x600" "640x480" EndSubSection EndSection Section "DRI" Group 0 Mode 0666 EndSection
Hum... an email exchange with Tim Jansen leads here: http://bugs.kde.org/show_bug.cgi?id=68637 which is a WONTFIX.