There's a patch in 4.4pre CVS for this for the XFree86 radeon driver.

Created attachment 98370 [details]
radeon powermanagement patch

I believe this is the power management patch to fix suspend. Feel free to try
it (if it's not it, I'll grovel around on my laptop some more for it. :) )

Created attachment 98390 [details]
XFree86-4.3.0-radeon-power-management-v1.patch

Merged it manually minus the whitespace changes, and attempted build into
XFree86-4.3.0-62 and attempted build on FC1.  Strange build failure:

make[3]: Entering directory `/home/temp1/redhat/BUILD/XFree86-4.3.0/xc/lib/dps'

checking ../../config/pswrap/pswrap over in ../../config/pswrap first...
make[4]: Entering directory
`/home/temp1/redhat/BUILD/XFree86-4.3.0/xc/config/pswrap'
gcc -m32 -O2  -pipe -march=i386 -mcpu=i686 -fno-strict-aliasing -pipe -ansi
-pedantic -Wall -Wpointer-arith -Wundef     -I../.. -I../../exports/include  
-Dlinux -D__i386__ -D_POSIX_C_SOURCE=199309L				  
-D_POSIX_SOURCE -D_XOPEN_SOURCE 			     -D_BSD_SOURCE
-D_SVID_SOURCE				   -D_GNU_SOURCE  -DFUNCPROTO=15
-DNARROWPROTO	-DXENVIRONMENT	  -c -o main.o main.c
bison -y -d pswparser.y
conflicts: 1 shift/reduce
make[4]: *** [pswparser.c] Broken pipe
make[4]: Leaving directory
`/home/temp1/redhat/BUILD/XFree86-4.3.0/xc/config/pswrap'
make[3]: *** [../../config/pswrap/pswrap] Error 2
make[3]: Leaving directory `/home/temp1/redhat/BUILD/XFree86-4.3.0/xc/lib/dps'
make[2]: *** [includes] Error 2
make[2]: Leaving directory `/home/temp1/redhat/BUILD/XFree86-4.3.0/xc/lib'
make[1]: *** [includes] Error 2
make[1]: Leaving directory `/home/temp1/redhat/BUILD/XFree86-4.3.0/xc'
make: *** [World] Error 2
make: Leaving directory `/home/temp1/redhat/BUILD/XFree86-4.3.0/xc'
error: Bad exit status from /var/tmp/rpm-tmp.59063 (%build)


Tried the same patch on XFree86-4.3.0-63 on FC1.90, build failure below.  I
suspect a portion of the patch from upstream CVS is missing?

gcc -m32 -O2  -pipe -march=i386 -mcpu=i686 -fno-strict-aliasing -pipe -ansi
-pedantic -Wall -Wpointer-arith -Wundef    -fno-merge-constants -I.
-I../../../../../../programs/Xserver/hw/xfree86/common
-I../../../../../../programs/Xserver/hw/xfree86/os-support
-I../../../../../../programs/Xserver/hw/xfree86 	  
-I../../../../../../programs/Xserver/hw/xfree86/vbe
-I../../../../../../programs/Xserver/hw/xfree86/int10		
-I../../../../../../programs/Xserver/hw/xfree86/ddc
-I../../../../../../programs/Xserver/hw/xfree86/i2c	      
-I../../../../../../programs/Xserver/hw/xfree86/rac
-I../../../../../../programs/Xserver/hw/xfree86/ramdac		 
-I../../../../../../programs/Xserver/hw/xfree86/shadowfb
-I../../../../../../programs/Xserver/hw/xfree86/xaa
-I../../../../../../programs/Xserver/hw/xfree86/xf24_32bpp	     
-I../../../../../../programs/Xserver/hw/xfree86/xf4bpp
-I../../../../../../programs/Xserver/hw/xfree86/xf1bpp		 
-I../../../../../../programs/Xserver/hw/xfree86/vgahw
-I../../../../../../programs/Xserver/hw/xfree86/fbdevhw 	  
-I../../../../../../programs/Xserver/cfb
-I../../../../../../programs/Xserver/mfb	   
-I../../../../../../programs/Xserver/fb -I../../../../../../programs/Xserver/mi
	   -I../../../../../../programs/Xserver/miext/shadow	       
-I../../../../../../programs/Xserver/render
-I../../../../../../programs/Xserver/Xext
-I../../../../../../programs/Xserver/include	       
-I../../../../../../programs/Xserver/GL/dri -I../../../../../../lib/GL/dri
-I../../../../../../include -I../../../../../../include/fonts
-I../../../../../../include/extensions -I../../../../../../exports/include/X11 
-I../../../../../.. -I../../../../../../exports/include -Dlinux -D__i386__
-D_POSIX_C_SOURCE=199309L			     -D_POSIX_SOURCE
-D_XOPEN_SOURCE 		    -D_BSD_SOURCE -D_SVID_SOURCE	       
	      -D_GNU_SOURCE			      -DSHAPE -DXINPUT -DXKB
-DLBX -DXAPPGROUP    -DXCSECURITY -DTOGCUP   -DXF86BIGFONT -DDPMSExtension   
-DPIXPRIV -DPANORAMIX	-DRENDER -DRANDR -DGCCUSESGAS -DAVOID_GLYPHBLT
-DPIXPRIV -DSINGLEDEPTH 			     -DXFreeXDGA -DXvExtension 
			 -DXFree86LOADER  -DXFree86Server		       
	  -DXF86VIDMODE 			  -DXvMCExtension    
-DSMART_SCHEDULE				  -DXResExtension	       
		 -DX_BYTE_ORDER=X_LITTLE_ENDIAN -DNDEBUG  -DFUNCPROTO=15
-DNARROWPROTO  -DIN_MODULE -DXFree86Module    -DGLXEXT -DXF86DRI
-DGLX_DIRECT_RENDERING -DGLX_USE_DLOPEN -DGLX_USE_MESA	 -c radeon_driver.c
radeon_driver.c: In function `RADEONSetDynamicClock':
radeon_driver.c:6917: error: structure has no member named `RamWidth'
radeon_driver.c:6918: error: `R300_MEM_USE_CD_CH_ONLY' undeclared (first use in
this function)
radeon_driver.c:6918: error: (Each undeclared identifier is reported only once
radeon_driver.c:6918: error: for each function it appears in.)
make[7]: *** [radeon_driver.o] Error 1
make[7]: Leaving directory
`/home/builder/rpmbuild/BUILD/XFree86-4.3.0/xc/programs/Xserver/hw/xfree86/drivers/ati'

make[6]: *** [all] Error 2
make[6]: Leaving directory
`/home/builder/rpmbuild/BUILD/XFree86-4.3.0/xc/programs/Xserver/hw/xfree86/drivers'

make[5]: *** [all] Error 2
make[5]: Leaving directory
`/home/builder/rpmbuild/BUILD/XFree86-4.3.0/xc/programs/Xserver/hw/xfree86'
make[4]: *** [hw/xfree86] Error 2
make[4]: Leaving directory
`/home/builder/rpmbuild/BUILD/XFree86-4.3.0/xc/programs/Xserver'
make[3]: *** [all] Error 2
make[3]: Leaving directory
`/home/builder/rpmbuild/BUILD/XFree86-4.3.0/xc/programs'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/builder/rpmbuild/BUILD/XFree86-4.3.0/xc'
make[1]: *** [World] Error 2
make[1]: Leaving directory `/home/builder/rpmbuild/BUILD/XFree86-4.3.0/xc'
make: *** [World] Error 2
make: Leaving directory `/home/builder/rpmbuild/BUILD/XFree86-4.3.0/xc'
error: Bad exit status from /var/tmp/rpm-tmp.74576 (%build)

Arjan) I don't think this is a busmaster enable issue, but warren
can test for that by doing lspci -vvv before suspending, then
switching to tty1 prior to suspend, then resume and run lspci -vvv
again to see if the busmaster bit was disabled.  That usually
prevents X from hanging for those cases.


Warren)
Unfortunately, the thing is that many changes have occured in XFree86
developement CVS in the radeon driver since Charl's dri-resume patch
went into the tree, and it's non-trivial to isolate each possible bug
fix from the larger changes that have occured in the last year (it's
about 12 months or so since Charl wrote the initial patch).  While
it is definitely possible to backport all of the relevant bits,
and include it, there are some really good reasons why not to do
this, which I'd like to touch upon:

Our current Radeon driver is very heavily patched already, and
maintenance of it becomes more and more difficult with each
overlapping patch that is applied.  It would be easier to maintain
the driver in a separate CVS repository directly than to keep
patching it.  Some of the patches we apply are applied conditionally,
or there is need to enable some of them only for certain builds,
which complicates thigns when patches overlap, as you need to
maintain multiple patches that add the same functionality, but
depend on which other conditionalized patches are being applied.

Another issue, is that in the past, the XFree86 side changes for
dri-resume patch to work, required kernel side changes as well,
and it was never clear for a long time wether all of our supported
OS releases got the patches for this from DRI CVS or not.  Since
we share XFree86 4.3.0 across RHL 9, FC1, RHEL3, it would have to
be in the kernels of all of those releases in order to keep
unnecessary conditionalization stew out of the spec file.  ;o)
I do not know if each OS release we ship 4.3.0 in has the needed
changes or not, and it's been so long now since the patches were
made that it would require research to make sure it would work in
all OS releases.

Additionally, this is a rather intrusive change, and has never
been tested in the distribution proper, so it is not without risk
of regression, which is particularly bad for the case of RHEL3,
and a risk I would rather not take.  To conditionalize the patch(es)
out for RHEL3 invites additional maintenance burden as described
above due to overlapping patches.

The good news however, is that XFree86 4.4.0 has full support for
this, and the X.org server tree has also.  We are planning on
putting X.org into the tree within the next few weeks anyway, so
this functionality comes for free at that time with no engineering
effort, and with much less risk of regression, and also is built
into the upstream codebase, so has zero maintenance costs.  ;o)

RHL 9 goes EOL at the end of April IIRC, and Fedora Core 2 will
be coming out not long after that.  RHEL 3 with 4.3.0 has to be
supported for 5 years however, and the risk of regression to RHEL
to add support for this when the 2 main products it benefits would
be EOL within months is not worth it, considering everyone is likely
to upgrade to Fedora Core 2 when it is out (if not before then).

The rpms of xorg-x11 once ready will most likely be installable
on Fedora Core 1 and later unless I need to break that for some
reason, and quite possibly will install on Red Hat Linux 9 with
some updates from newer OS releases.

So for the time being, it is not that this problem is unfixable,
but rather that 4.3.0 has reached near end of life for us, and
spending any engineering resources on possibly regression risky
patches in the src.rpm which must share with RHEL3 and be supported
for 4.5 more years, when we're ditching 4.3.0 ultrasoon is just
not worth the risk IMHO.

So for now, my recommendation is to wait a few weeks and upgrade
to xorg X11 and it's radeon driver.  I'll update this when xorg
is in the tree.
Thanks for your patience.  ;o)

It seems that this is fixed in xorg-x11!  Now only Bug #117607
prevents S3 sleep from working on the Thinkpad T40 and T41.