X fails to start after recent update

[D. Hugh Redelmeier]

I did an update.  It said I should reboot.
After reboot, X does not come up.

I can flip to a text console:  that's what I'm typing this into.

Anyone else have this problem?

I'm running X86-66 Fedora 10.  The video card is an Asus EAH3650
Silent Magic.

/var/log/Xorg.0.log shows some bad news:

  (EE) RADEON(0): Output DVI-0 enabled but has no modes

But I don't know why it says that.  Preceding lines include:
  (II) RADEON(0): Printing probed modes for output DVI-0
  (II) RADEON(0): Modeline "2560x1600"x59.9  268.00  2560 2608 2640 2720  1600 1603 1609 1646 +hsync +vsync (98.5 kHz)
This is a correct modeline for the monitor
  (II) RADEON(0): Output HDMI-0 disconnected
  (II) RADEON(0): Output DVI-0 connected
  (II) RADEON(0): Using exact sizes for initial modes

Eventually, it says:
  (EE) Screen(s) found, but none have a usable configuration.

  Fatal server error:
  no screens found

I don't know which update is the problem.  Certainly one in the alst
few days.

It cannot be the actual X device driver because I didn't update that.
There is a driver update but I don't apply it because it does not
work on my system.  See
  https://bugzilla.redhat.com/show_bug.cgi?id=484636

The ati driver recognizes the video card as:
  (--) RADEON(0): Chipset: "ATI ATI Radeon HD 3600 XT" (ChipID = 0x9598)
The "ATI ATI" is a typo fixed in the current driver.