[Intrepid] SRU: Revert change of acpi integer to 64bit on 32bit systems

Andy Whitcroft apw at canonical.com
Tue Mar 10 19:30:44 GMT 2009

On Tue, Mar 10, 2009 at 07:58:40PM +0100, Stefan Bader wrote:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/337019
> SRU justification:
> Impact: One of the stable release updates for Intrepid changed the size 
> of an acpi integer from 32 to 64bit on 32bit builds. This had a bad side 
> effect when using closed source graphics drivers on machines that exposed 
> video adapters via acpi tables. On those systems the start of X locked up 
> with a solid black screen without any chance to type normal commands (or 
> change to the terminal).
> More recent NVidia drivers (180) work with that change but the default in 
> intrepid is 177.
> Fix: Revert the change to acpi integer size (and one follow-up patch to this).
> Testcase: Tested by affected users.

Seems reasonable.  I assume we get this fix on later releases which
already have the updated Nvidia drivers.  So we can live without it in



More information about the kernel-team mailing list