[Savage40] Re: Savage dri does not resume from disk

[Sergey Zharkov]

Felix,

I've tried some coding to make savage resume looking at radeon resume
code but failed completely :(( Unfortunately I'am ABAP/4 developer - not
a C guru. 

The only thing that may help real dri developers to suggest how to
resume - when I switched DMA mode from command or vertex to "None"  i've
lost about 5 % of speed but  the dri system was able to resume from disk
if no glx apps were running. And even with glx apps running it was
resuming, but the glx apps were resuming with black window. Anyway after
resume I was able to start glx apps and they worked, with dma enebled I
had to pull a power cord and battery out to restart.   And the bug is
not in the kernel I guess - restarting X after resume with enabled dma
works fine.



On Wed, 2005-03-09 at 00:31 +0100, Felix Kühling wrote:
> Am Mittwoch, den 09.03.2005, 02:08 +0300 schrieb Sergey Zharkov:
> > Felix,
> > 
> > Sorry for reporting bug on this address - just culd not find any place t
> > report for DRI, and you seems to be the only man who actually program
> > the driver.
> 
> The DRI developers list is dri-devel at lists.sourceforge.net. Savage
> issues can also be discussed at savage40 at probo.com, which is a moderated
> list.
> 
> >  I've recently moved from Savage DRM 1.x  to 2.x from cvs
> > with kernel 2.6.11 - I've received 10% increase in speed, quality of
> > rendering looks better as well (i got rid of some ugly artifacts on my
> > favorite SeriousSam game) - the only thing DRI does not resume from disk
> > anymore. It resumes from memory (acpi state S3) fine, but when I resume
> > from disk even having no apps using DRI during suspend-resume, each time
> > I try to start 3D application everything hangs and the only chance I
> > have is to switch power off. Just curious are you aware about this - may
> > be you have any idea how to make resume from disk working again, 
> 
> Not really. Resume from disk was only half working for me with DRM 1.x.
> It locked up after some time with more demanding applications. I was
> guessing that it locked up whenever the driver started using AGP
> textures, but I never looked into it more seriously.
> 
> With the new driver I have never tried resume from disk, and I don't
> know what would be needed to make it work. I'm CCing to dri-devel. Can
> someone give me a brief summary what a driver needs to support resume
> from disk? I seem to remember that i915 and unichrome saw changes in
> that area in the last months.
> 
> > 
> > The hardware is Twinhead Efio 121A, KN266 based laptop
> > 
> > 
> > Thank you
> > 
> > Sergey
> > 
-- 
Sergey Zharkov <sergey_zharkov at mail.ru>