Same problem here, I use a ATI Radeon HD4870 (RV770 chip). Since I upgraded to Kubuntu 9.10, every about 2-3 startups KDE is not starting, but instead I get this GTK-like message "Ubuntu is running in low-graphics mode".
I found out that if I click on console login, and then do a Ctrl+F2 and Ctrl+F7 again, suddenly KDE starts up magically, running perfectly normal, even with 3D desktop effects. lspci -vvv 01:00.0 VGA compatible controller: ATI Technologies Inc RV770 [Radeon HD 4870] Subsystem: ATI Technologies Inc Device 0502 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, Cache Line Size: 32 bytes Interrupt: pin A routed to IRQ 29 Region 0: Memory at d0000000 (64-bit, prefetchable) [size=256M] Region 2: Memory at f7ee0000 (64-bit, non-prefetchable) [size=64K] Region 4: I/O ports at c000 [size=256] Expansion ROM at f7ec0000 [disabled] [size=128K] Capabilities: <access denied> Kernel driver in use: fglrx_pci Kernel modules: fglrx, radeon ** Attachment added: "kdm.log" http://launchpadlibrarian.net/35014238/kdm.log -- KDE doesn't start after 9.10 update. Radeon? KDM? https://bugs.launchpad.net/bugs/465470 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