Switched to initdefault 3 in /etc/inittab and logged into Xen 3.4.2 host with your kernel. Set up VNC session and got the nice dmesg report, which is attached. Yes , [drm]  entries for Radeon HD 4650 look good , but via remote VNC session. [drm] Initialized drm 1.1.0 20060810 [drm] radeon defaulting to kernel modesetting. [drm] radeon kernel modesetting enabled. xen: registering gsi 16 triggering 0 polarity 1 xen_allocate_pirq: returning irq 16 for gsi 16 xen: --> irq=16 xen_set_ioapic_routing: irq 16 gsi 16 vector 152 ioapic 0 pin 16 triggering 1 polarity 1 radeon 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 radeon 0000:01:00.0: setting latency timer to 64 [drm] radeon: Initializing kernel modesetting. [drm] register mmio base: 0xFE8E0000 [drm] register mmio size: 65536 ATOM BIOS: 11X [drm] Clocks initialized ! mtrr: type mismatch for d0000000,10000000 old: write-back new: write-combining [drm] Detected VRAM RAM=256M, BAR=256M [drm] RAM width 128bits DDR [TTM] Zone  kernel: Available graphics memory: 4074962 kiB. [TTM] Zone   dma32: Available graphics memory: 2097152 kiB. [drm] radeon: 256M of VRAM memory ready [drm] radeon: 512M of GTT memory ready. [drm] Loading RV730 CP Microcode platform radeon_cp.0: firmware: requesting radeon/RV730_pfp.bin platform radeon_cp.0: firmware: requesting radeon/RV730_me.bin [drm] GART: num cpu pages 131072, num gpu pages 131072 [drm] ring test succeeded in 1 usecs [drm] radeon: ib pool ready. [drm] ib test succeeded in 0 usecs [drm] Radeon Display Connectors [drm] Connector 0: [drm]   HDMI-A [drm]   DDC: 0x7f10 0x7f10 0x7f14 0x7f14 0x7f18 0x7f18 0x7f1c 0x7f1c [drm]   Encoders: [drm]     DFP2: INTERNAL_UNIPHY1 [drm] Connector 1: [drm]   VGA [drm]   DDC: 0x7e20 0x7e20 0x7e24 0x7e24 0x7e28 0x7e28 0x7e2c 0x7e2c [drm]   Encoders: [drm]     CRT2: INTERNAL_KLDSCP_DAC2 [drm] Connector 2: [drm]   DVI-I [drm]   DDC: 0x7e40 0x7e40 0x7e44 0x7e44 0x7e48 0x7e48 0x7e4c 0x7e4c [drm]   Encoders: [drm]     CRT1: INTERNAL_KLDSCP_DAC1 [drm]     DFP1: INTERNAL_UNIPHY [drm] fb mappable at 0xD0141000 [drm] vram apper at 0xD0000000 [drm] size 5242880 [drm] fb depth is 24 [drm]    pitch is 5120 executing set pll executing set crtc timing [drm] TV-11: set mode 1280x1024 19 Console: switching to colour frame buffer device 160x64 fb0: radeondrmfb frame buffer device registered panic notifier [drm] Initialized radeon 2.0.0 20080528 for 0000:01:00.0 on minor 0 Attempt to run startx locally fails. Keyboard dies. Please, advise. Boris.