Here's the thing; I never had trouble suspending the console, but I also
never tracked stable or current with that r128 card in. I only ran releases
with updated ports trees. Last time I ran that card was under 4.6-RELEASE
and my experience was that I could suspend on the console or another VT but
when I resumed if I tried to switch back to X it would hang (mouse moved,
but everything else was borked with CPU on 100%). My solution was what I
detailed about running two X servers.
I've been running the radeon card since the middle of last summer and now
I can't do a suspend to ram at all -- the bios chokes and does a power cycle
on resume (guess it doesn't understand the new card as well as it should). I
don't have any other side effects and I can still suspend to disk.
The suspend changes were only to the radeon driver and they were not merged.
I found and tried the diffs; they seemed to work well in that they prevented
hangs when switching to a vt while running a DRI app, but I've never been
able to test the suspend to ram because of the bios issue. It does not work
when resuming from disk -- it displays the behavior I came to expect from
the r128 card on resume from ram.
By the way, those diffs set up a handler to notice the suspend event and
flush the buffer leaving it empty when the machine suspended. The same was
done for a switch to a vt to avoid the same sync problem.
Sean
-Original Message-
From: Eric Anholt [mailto:[EMAIL PROTECTED]
Sent: Thursday, April 03, 2003 3:51 PM
To: Welch, Sean M.
Cc: '[EMAIL PROTECTED]'; '[EMAIL PROTECTED]'
Subject: Re: Re:agp driver locks up on resume
On Thu, 2003-04-03 at 12:31, Welch, Sean M. wrote:
I'm familiar with this one -- it isn't agp, it is DRI. DRI depends on AGP
so you are disabling both when you disable
AGP. This issue has to do with the DRI module losing track of what is
going on in the usage of main memory
(through AGP) when you do a suspend resume -- it gets stuck trying to
flush
a buffer...
I was initally going to say this too. However, I remember I tried to
suspend/resume my laptop in the console with DRM not loaded and still
had hangs. I put some printf in the kernel to see if the AGP setup was
corrupted by the resume and it didn't look like it (having noticed that
linux does a whole re-setup of agp after resume). I didn't ever try
without AGP at all I think, and didn't try reconfiguring.
Some work has been done on suspend/resume with the DRI. I don't know
too much about it, but I think it let you suspend/resume while a 3d
client was running. I don't remember if that stuff got merged or not
(thinking not). I think suspend/resume is supposed to still work if
you're switched away to console.
--
Eric Anholt[EMAIL PROTECTED]
http://people.freebsd.org/~anholt/ [EMAIL PROTECTED]
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