• Antonino A. Daplas's avatar
    [PATCH] vesafb: Fix display corruption on display blank · bb7e257e
    Antonino A. Daplas authored
    Reported by: Bob Tracy <rct@gherkin.frus.com>
    
     "...I've got a Toshiba notebook (730XCDT -- Pentium 150MMX) for which
      I'm using the Vesa FB driver.  When the machine has been idle for some
      time and the driver attempts to powerdown the display, rather than the
      display going blank, it goes gray with several strange lines.  When I
      hit the "shift" key or other-wise wake up the display, the old video
      state is not fully restored..."
    
    vesafb recently added a blank method which has only 2 states, powerup and
    powerdown.  The powerdown state is used for all blanking levels, but in his
    case, powerdown does not work correctly for higher levels of display
    powersaving. Thus, for intermediate power levels, use software blanking,
    and use only hardware blanking for an explicit powerdown.
    Signed-off-by: default avatarAntonino Daplas <adaplas@pol.net>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
    bb7e257e
vesafb.c 14.4 KB