Comment 67 for bug 564559

Works for me. Steps I took test:

1) I edited /etc/grub/default and commented-out the line "GRUB_CMDLINE_LINUX="nomodeset"

2) I enabled lucid-proposed and did a reload in Synaptic

3) I installed the linux-image-2.6.32-23-generic package

After a hard-reboot, KMS appears to work correctly, and dmesg seems to agree:

jderose@jgd-ws:~$ dmesg | grep radeon
[ 1.132340] [drm] radeon defaulting to kernel modesetting.
[ 1.132342] [drm] radeon kernel modesetting enabled.
[ 1.132378] radeon 0000:04:00.0: PCI INT A -> GSI 24 (level, low) -> IRQ 24
[ 1.132382] radeon 0000:04:00.0: setting latency timer to 64
[ 1.133239] [drm] radeon: Initializing kernel modesetting.
[ 1.133407] [drm] radeon: 256M of VRAM memory ready
[ 1.133408] [drm] radeon: 512M of GTT memory ready.
[ 1.133446] radeon 0000:04:00.0: irq 57 for MSI/MSI-X
[ 1.133450] [drm] radeon: using MSI.
[ 1.133478] [drm] radeon: irq initialized.
[ 1.133735] platform radeon_cp.0: firmware: requesting radeon/RV730_pfp.bin
[ 1.134519] platform radeon_cp.0: firmware: requesting radeon/RV730_me.bin
[ 1.135238] platform radeon_cp.0: firmware: requesting radeon/R700_rlc.bin
[ 1.183866] [drm] radeon: ib pool ready.
[ 1.348994] fb0: radeondrmfb frame buffer device
[ 1.348998] [drm] Initialized radeon 2.0.0 20080528 for 0000:04:00.0 on minor 0

Martin, is there anything else I should test? Thanks for the fix!

BTW, I'm testing with a Samsung 305T 2560x1600 monitor.