[Bug 46470] System freeze with white screen

[DavorCubranic]

Public bug reported:

Dapper Flight 7 on a Shuttle ST20G5 (AMD64 and a Radeon X200 IGP)

I am experiencing occasional system freezes. It happens in X only -- the
entire screen goes white and the computer does not respond any more to
anything but power-cycle. I had the same issue in Breezy, then switched
to Gentoo 2006.0 where everything worked fine, and now that I'm trying
out Dapper I see the issue is still there.

I've had this happen with open-source Radeon driver on Dapper and ATI's
fglrx drivers and the generic VESA on Breezy. As I already mentioned,
this did not happen on Gentoo (both 2.6.15 and 2.6.16 kernels) nor on
Windows XP sp2 (dual-boot).

** Affects: linux-source-2.6.15 (Ubuntu)
     Importance: Medium
         Status: Unconfirmed

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System freeze with white screen
https://launchpad.net/bugs/46470