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SubjectRe: [Bug #12158] commit b1ee26b freezes system on switching from X to text console
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On Wed, 2008-12-03 at 16:44 -0800, Linus Torvalds wrote:
>
> On Wed, 3 Dec 2008, Rafael J. Wysocki wrote:
> >
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.27. Please verify if it still should be listed and let me know
> > (either way).
> >
> >
> > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12158
> > Subject : commit b1ee26b freezes system on switching from X to text console
> > Submitter : Gaudenz Steinlin <gaudenz@debian.org>
> > Date : 2008-11-25 19:44 (9 days old)
> > First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b1ee26bab14886350ba12a5c10cbc0696ac679bf
> > References : http://marc.info/?l=linux-kernel&m=122764344231140&w=4
> > Handled-By : Benjamin Herrenschmidt <benh@kernel.crashing.org>
>
> I think we're assuming that this already got fixed by commit
> c4c6fa9891f3d1bcaae4f39fb751d5302965b566 ("radeonfb: fix problem with
> color expansion & alignment").

No, this is a different problem I think. That race between VT switch and
X, which I -suspect- may be an X bug. I haven't managed to pin it down
yet, so what I may do for .28 is send a patch that disables color
expansion acceleration unless you explicitely request it via a module
param. At least until I can find what's going on.

Cheers,
Ben.



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