On Sun, 2011-05-22 at 18:13 +0200, Marek Otahal wrote: > On Sunday 22 of May 2011 08:23:34 Keith Packard wrote: > > On Sat, 21 May 2011 23:55:57 -0500, Matt Mackall <mpm@xxxxxxxxxxx> wrote: > > > I've got a new Thinkpad x220 which won't wake up from suspend with > > > 2.6.39, but works fine with 2.6.37. > > > > > > I bisected it down to this cset: > > > > > > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit > > > ;h=4efe070896e1f7373c98a13713e659d1f5dee52a > > > > > > drm/i915: make the blitter report buffer modifications to the FBC unit > > > > For now, you should be able to disable FBC: > > > > diff --git a/drivers/gpu/drm/i915/i915_drv.c > > b/drivers/gpu/drm/i915/i915_drv.c index c34a8dd..2a82895 100644 > > --- a/drivers/gpu/drm/i915/i915_drv.c > > +++ b/drivers/gpu/drm/i915/i915_drv.c > > @@ -183,7 +183,7 @@ static const struct intel_device_info > > intel_sandybridge_d_info = { static const struct intel_device_info > > intel_sandybridge_m_info = { .gen = 6, .is_mobile = 1, > > .need_gfx_hws = 1, .has_hotplug = 1, > > - .has_fbc = 1, > > + .has_fbc = 0, > > .has_bsd_ring = 1, > > .has_blt_ring = 1, > > }; > > > > Let us know if this works. There's a patch heading for 2.6.40 that > > provides a module parameter to control FBC from the kernel command > > line. We've got a couple X220s on order and I hope we'll be able to > > reproduce (and fix) this issue -- FBC saves enough power that we'd like > > to be able to leave it enabled on hardware that supports it. > > Hello, > thanks for finding and working on this issue. > > I seem to be struck by the same bug, intel atom netbook, i915 graphics driver, > resume from suspend stopped working. > For details please see my bug reported at archlinux : > https://bugs.archlinux.org/24029 > > I tried suspending with the 2.6.37(.5) kernel as Matt suggested but it didn't > work for me either - Matt, could you tell me the last version you found > working? I'll try custom kernel with the patch provided when i have some time > for testing (is it working for you?). The last released kernel that worked for me was 2.6.37. Keith's patch appears to work fine as well. -- Mathematics is the supreme nostalgia of our time. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
