Re: [Intel-gfx] [PATCH] drm/i915: Disable LVDS while modesetting for HD+ panels

2012-07-02 Thread Takashi Iwai
At Mon, 2 Jul 2012 19:55:17 +0200, Daniel Vetter wrote: > > On Mon, Jul 2, 2012 at 7:51 PM, Takashi Iwai wrote: > > It's just for avoiding the possible regressions by this change. > > We definitely need a fix for HD+ panels ASAP, while other panels work > > in the current code. Introducing the e

Re: [Intel-gfx] [PATCH] drm/i915: Disable LVDS while modesetting for HD+ panels

2012-07-02 Thread Daniel Vetter
On Mon, Jul 2, 2012 at 7:51 PM, Takashi Iwai wrote: > It's just for avoiding the possible regressions by this change. > We definitely need a fix for HD+ panels ASAP, while other panels work > in the current code. Introducing the extra disable code affecting all > laptops sounds too risky for 3.5

Re: [Intel-gfx] [PATCH] drm/i915: Disable LVDS while modesetting for HD+ panels

2012-07-02 Thread Takashi Iwai
At Mon, 2 Jul 2012 18:53:29 +0200, Daniel Vetter wrote: > > On Mon, Jul 02, 2012 at 06:14:54PM +0200, Takashi Iwai wrote: > > Some SNB/IVY Laptops with 1600x900 HD+ panel (e.g. Dell Latitude E6420 > > and HP ProBook 65xx) are known to show the whole black/white garbage > > or flickering screens wh

Re: [Intel-gfx] [PATCH] drm/i915: Disable LVDS while modesetting for HD+ panels

2012-07-02 Thread Daniel Vetter
On Mon, Jul 02, 2012 at 06:14:54PM +0200, Takashi Iwai wrote: > Some SNB/IVY Laptops with 1600x900 HD+ panel (e.g. Dell Latitude E6420 > and HP ProBook 65xx) are known to show the whole black/white garbage > or flickering screens while starting up or changing the mode. > This can be worked around b

[Intel-gfx] [PATCH] drm/i915: Disable LVDS while modesetting for HD+ panels

2012-07-02 Thread Takashi Iwai
Some SNB/IVY Laptops with 1600x900 HD+ panel (e.g. Dell Latitude E6420 and HP ProBook 65xx) are known to show the whole black/white garbage or flickering screens while starting up or changing the mode. This can be worked around by disabling LVDS off while changing the mode. Since this doesn't give