Apparently it doesn't work. X-tiled self-refresh works flawlessly otoh. It's unclear whether this just borked wm setup from our side or a hw restriction, but just disabling gets things going.
Note that this regression was only brought to light with commit 3f2dc5ac05714711fc14f2bf0ee5e42d5c08c581 Author: Ville Syrjälä <ville.syrj...@linux.intel.com> Date: Fri Jan 10 14:06:47 2014 +0200 drm/i915: Fix 915GM self-refresh enable/disable before that self-refresh for i915GM didn't work at all. Kudos to Ville for spotting a little bug in the original patch I've attached to the bug. Cc: Ville Syrjälä <ville.syrj...@linux.intel.com> Cc: Chris Wilson <ch...@chris-wilson.co.uk> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76103 Tested-by: Krzysztof Mazur <krzys...@podlesie.net> Cc: Krzysztof Mazur <krzys...@podlesie.net> Cc: sta...@vger.kernel.org Signed-off-by: Daniel Vetter <daniel.vet...@ffwll.ch> --- drivers/gpu/drm/i915/intel_pm.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index c849986b40de..6e1a644b6330 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -1545,6 +1545,14 @@ static void i9xx_update_wm(struct drm_crtc *unused_crtc) DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm); + if (IS_I915GM(dev) && enabled) { + struct intel_framebuffer *fb = to_intel_framebuffer(enabled->fb); + + /* self-refresh seems busted with untiled */ + if (fb->obj->tiling_mode == I915_TILING_NONE) + enabled = NULL; + } + /* * Overlay gets an aggressive default since video jitter is bad. */ -- 1.8.5.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx