[Bug 31527] Re: DRI locks up the machine when starting X on a Radeon 9250

[Donahj]

I dowloaded and installed ubuntu 5.10 on DVD and had a problem with my PCI radeon 9250 just as described here.  After poking around a little I tried adding the modules DBE and V41 to the list of loaded modules. Mostly because DBE was mentioned in the context of secondary VGA cards.  Well wouldn't you know that X started working with DRI. 

I am not sure this will work for others but it might be worth a try

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DRI locks up the machine when starting X on a Radeon 9250
https://launchpad.net/bugs/31527