Seems I have this problem too since I upgraded from 8.04 to 9.10 I have KDE 4.3.3 and nvidia driver 190, but same issue I experienced with KDE 4.3.2 and nvidia 185 (from Karmic repo).
my video adaptor: 01:00.0 VGA compatible controller: nVidia Corporation Quadro NVS 140M (rev a1) Subsystem: Lenovo Device 20d8 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 16 Region 0: Memory at d6000000 (32-bit, non-prefetchable) [size=16M] Region 1: Memory at e0000000 (64-bit, prefetchable) [size=256M] Region 3: Memory at d4000000 (64-bit, non-prefetchable) [size=32M] Region 5: I/O ports at 2000 [size=128] Capabilities: <access denied> Kernel driver in use: nvidia Kernel modules: nvidia, nvidiafb ** Attachment added: "Xorg log" http://launchpadlibrarian.net/35837669/Xorg.0.log -- [Karmic] X server starts randomly in failsafe when starting from cold boot https://bugs.launchpad.net/bugs/459639 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs