10 Feb
2011
10 Feb
'11
6:34 p.m.
On Thu, 10 Feb 2011 13:10:26 +0100 Francesco Allertsen fallertsen@gmail.com wrote:
On Wed, Feb 09, 2011 at 05:09:10PM +0000, Chris Wilson wrote:
I was optimistic that we might spot the real issue... However, you appear to be not alone and so I've pushed a disabling patch onto -fixes:
commit ac66808814036b4c33dd98091b2176ae6157f1a8 Author: Chris Wilson chris@chris-wilson.co.uk Date: Wed Feb 9 16:15:32 2011 +0000
drm/i915: Disable RC6 on Ironlake The automatic powersaving feature is once again causing havoc, with 100% reliable hangs on boot and resume on affected machines. Reported-by: Francesco Allertsen <fallertsen@gmail.com> Reported-by: Gui Rui <chaos.proton@gmail.com> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=28582 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>That should work its way upstream shortly.
I've tried to apply it on top of 2.6.38-rc4, and now it doesn't hang when I start X, but it hangs when I resume from suspend to RAM.
Since intel_reg_read won't work, can you try this patch instead? Just patch it in, then cat /sys/kernel/debug/dri/0/i915_drpc_info
Thanks,
--
Jesse Barnes, Intel Open Source Technology Center
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1018,6 +1018,8 @@ static int i915_drpc_info(struct seq_file *m, void *unused
break;
}
+ seq_printf(m, "RSTDBYCTL: 0x%08x\n", rstdbyctl);
+
return 0;
}