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Message-ID: <1319743670.62757.YahooMailNeo@web130109.mail.mud.yahoo.com> Date: Thu, 27 Oct 2011 12:27:50 -0700 (PDT) From: Alex Davis <alex14641@...oo.com> To: "wmkoolen@...ence.uva.nl" <wmkoolen@...ence.uva.nl>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re:[bisected] i915 dpms does not switch back light on >Hi guys, > >After update from kernel 3.0.8 to 3.1 I encounter the following problem. >When power saving turns off the back light, key/mouse activity does not >turn it back on. I can turn it back on by pressing the "brightness++" key. I've been having this problem as well. I created a patch that fixes the problem for me and others: diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index 6f56676..a9e0c7b 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -262,6 +262,8 @@ void intel_panel_disable_backlight(struct drm_device *dev) dev_priv->backlight_level = intel_panel_get_backlight(dev); dev_priv->backlight_enabled = false; } + + intel_panel_set_backlight(dev, 0); } For more info, see http://marc.info/?l=linux-kernel&m=131959957117710&w=2 I code, therefore I am -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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