[Pm-utils] [PATCH 6/7] This patch adds framebuffer console handling routines.

Victor Lowther victor.lowther at gmail.com
Wed Feb 13 11:21:46 PST 2008

On Wed, Feb 13, 2008 at 08:00:14PM +0100, Till Maas wrote:
> On Wed February 13 2008, Victor Lowther wrote:
> > My system is a Dell Latitude D820 with the nvidia 7400 go.  They also
> > shipped with intergrated Intel video.  You cannot tell the difference
> > looking just at system model and BIOS revision.  In my system, the
> > default whitelist applies the wrong quirks every time and without
> > overriding the whitelist supplied settings my system will die on resume
> > every time when the card gets POSTed.  Submitting a whitelist update
> > would be guaranteed to break other systems in the field, because the
> > whitelist does not look at what video card the system is actually using,
> > which (these days) is the single biggest source of suspend/resume
> > glitches.
> >
> > The same holds true for any portable system that can be purchased with
> > different models of video card.
> >
> > I would prefer a whitelist that actually looks at the installed video
> > card(s) and the driver(s) those cards are using before applying quirks.
> Afaik it is already possible to distinguish systems by their video card and 
> used driver within the hal whitelist. But it case there are several video 
> cards installed, it is not possible to apply  differents quirks to different 
> video cards. But this is also a limitation of some quirks, e.g.
> <match key="/org/freedesktop/Hal/devices/pci_10de_322:info.linux.driver" 
> string="nvidia">
> is recognized on my desktop that uses an nvidia video card with the binary 
> driver. In general, it should be possible to match agains anything that is 
> stored in hal, I used lshal to find out what I can use to match agains my 
> video card.

Good to know.  It sounds like there needs to be some sort of on-the-box
mechanism that can gather the required info to automate keeping the HAL
whitelist up-to-date, and some checking to make sure that the HAL
component that actually invokes pm-suspend and friends is passing flags
based on all that knowledge. But that is a discussion for another list.
> Regards,
> Till

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Victor Lowther
Ubuntu Certified Professional

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