Re: Suspending with i915 and DRI (possible solution?)
Bernard Blackham wrote: Greetings, I have an Intel i855GM chipset in my laptop, running Xorg 6.8.1 with i810 and i915_dri for DRI, and kernel 2.6.10 with the i915 kernel module. DRI is all well and happy, and glxgears achieves about 800fps. I use Software Suspend 2 (2.1.5.11) from softwaresuspend.berlios.de, and upon suspending and resuming, I found that GL apps would freeze when trying to be launched (as has been reported before). So I did some digging and poking, and wrote the attached little C program that calls I915_RESUME_DMA in the i915 drm driver, and surprisingly, this lets me run GL applications once more without restarting X. If I simply run it after resuming and returning back to X, I can run GL applications again. Even more interestingly though, is if I run it after resuming but before returning back to X, existing GL applications don't lock up and continue to run, with some small mishaps: - on the first suspend invocation (from a freshly started X), Xorg will consume 99% CPU (though still be otherwise functional) until I kill glxgears *and* switch VTs to text and back to X. On subsequent suspend invocations, this doesn't happen. If I'm not running glxgears or a GL app when suspending, it doesn't happen either. - glxgears' reported fps will drop from the usual 800fps on a freshly started X, to about 200fps on a suspend/resumed one, but CPU usage is pretty close to zero indicating that it's certainly not software-GL. I can still play tuxracer after resume with no noticable differences. - running tuxracer whilst suspending and resuming results in a garbled screen (fair enough though :). You can make out enough of the screen to exit tuxracer and restart it again... I guess I'll have to stop tuxracer whilst suspending for now ;) So this is really just a quick hack but is it worth considering moving into something like the X dri driver? (eg, on vt switch?) And is it just working for me out of pure luck? :) I can imagine that to restore full DRI would take much more work (textures and the like). There has just been an update to xorg which includes DRI suspend/resume support for i915. Hopefully this will be of some help to you. Keith --- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almosthttp://www.thinkgeek.com/sfshirt -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
Re: Suspending with i915 and DRI (possible solution?)
On Fri, Jan 07, 2005 at 03:12:22PM +, Keith Whitwell wrote: There has just been an update to xorg which includes DRI suspend/resume support for i915. Hopefully this will be of some help to you. Thanks. It works perfectly! Needed a couple of patches to get it happy however: - my `install` on Debian doesn't know about -C - from googling I gather it means --owner=root --group=root (no idea what's standard though). - I was getting unresolved symbol errors in i915_drv.so for _tnl_vertex_cull_stage until I added t_vb_cull.c to sources. Bernard. -- Bernard Blackham bernard at blackham dot com dot au Index: drivers/dri/Makefile.template === RCS file: /cvs/mesa/Mesa/src/mesa/drivers/dri/Makefile.template,v retrieving revision 1.17 diff -u -3 -p -r1.17 Makefile.template --- drivers/dri/Makefile.template 7 Jan 2005 10:35:23 - 1.17 +++ drivers/dri/Makefile.template 7 Jan 2005 18:23:38 - @@ -78,7 +78,7 @@ $(LIBNAME): $(OBJECTS) $(MESA_MODULES) $(LIB_DIR)/$(LIBNAME): $(LIBNAME) - install -C $(LIBNAME) $(LIB_DIR) + install --owner=root --group=root $(LIBNAME) $(LIB_DIR) Index: sources === RCS file: /cvs/mesa/Mesa/src/mesa/sources,v retrieving revision 1.17 diff -u -3 -p -r1.17 sources --- sources 19 Dec 2004 03:06:59 - 1.17 +++ sources 7 Jan 2005 18:23:38 - @@ -116,6 +116,7 @@ TNL_SOURCES = \ tnl/t_save_api.c \ tnl/t_save_loopback.c \ tnl/t_save_playback.c \ + tnl/t_vb_cull.c \ tnl/t_vb_fog.c \ tnl/t_vb_light.c \ tnl/t_vb_normals.c \
Re: Suspending with i915 and DRI (possible solution?)
Bernard Blackham wrote: On Fri, Jan 07, 2005 at 03:12:22PM +, Keith Whitwell wrote: There has just been an update to xorg which includes DRI suspend/resume support for i915. Hopefully this will be of some help to you. Thanks. It works perfectly! Needed a couple of patches to get it happy however: Good to hear. - my `install` on Debian doesn't know about -C - from googling I gather it means --owner=root --group=root (no idea what's standard though). My fault, seems to have bitten a few people now. - I was getting unresolved symbol errors in i915_drv.so for _tnl_vertex_cull_stage until I added t_vb_cull.c to sources. Committed. Keith --- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almosthttp://www.thinkgeek.com/sfshirt -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
