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    drm/nouveau: do not forcibly power on lvds panels · 1a1841d3
    Ben Skeggs 提交于
    This fix was put in place to fix a bug where the eDP panel on certain
    laptops fails to respond over the aux channel after suspend.
    
    It appears that on some systems (Dell M6600, with LVDS panel) there's a
    very bad interaction with the eDP init table that causes the SOR to get
    very confused and not drive the panel correctly, leading to bleed.
    
    A DPMS off/on cycle is enough to bring it back, but, this will avoid the
    problem by not touching the panel GPIOs at times we're not meant to.
    Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
    1a1841d3
nouveau_connector.c 33.2 KB