[ubuntu] Blank screen after initrd load with kernels > 2.6.22?

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http://ubuntuforums.org – I have very old Compaq Armada 1500c. I had ubuntu 8.04 running it, and decided to upgrade it. But unfortunately, no success. By modifying kernel command line, removing 'quiet splash' last line I could see was: checking if image is initramfs .. it is After this, screen is blank. This same problem is with 8.10 (to which I upgraded my 8.04) and also 9.10 beta install cd. I think I saw this problem on some stage with 8.04 also, but then I just used older kernel (I think it was 2.6.22 that worked, 2.6.24 did not) I've tried kernel command line parameters like vga=0, vga=1, vga=771, nofb but result is all time the same. Any ideas? (Hardware)