Got it working (mostly) except on wake from sleep (or when rebooting during an install) I lose video output on the LCD. Backlight is on (verified by turning bringhtness all the way up, I get a light vertical display output from second lids channel)
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Got it working (mostly) except on wake from sleep (or when rebooting during an install) I lose video output on the LCD. Backlight is on (verified by turning bringhtness all the way up, I get a light vertical display output from second lvds channel)
If I don't close the clamshell, use screen saver with "never sleep" timeout, it works fine (except needing hard power down if I update OS)
Unfortunately due to cats who love walking on keyboards, I need to close the lid.
I have tried:
# SMC and P/N VRAM reset
# unplug/replug battery (battery is "normal")
# safe mode
# booting external SSD (same problem)
# reinstalling OS
# googling many hours for answers
I suspect something with LCD voltage rails coming out of sleep, but I need to find the schematics and board view to check.
I will try an external hdmi monitor, which I suspect will work, but that does not help with getting sleep working.
Got it working (mostly) except on wake from sleep (or when rebooting during an install) I lose video output on the LCD. Backlight is on (verified by turning bringhtness all the way up, I get a light vertical display output from second lids channel)
If I don't close the clamshell, use screen saver with "never sleep" timeout, it works fine (except needing hard power down if I update OS)
Unfortunately due to cats who love walking on keyboards, I need to close the lid.
I have tried:
# SMC and P/N VRAM reset
# unplug/replug battery (battery is "normal")
# safe mode
# booting external SSD (same problem)
# reinstalling OS
# googling many hours for answers
-
I suspect something with LCD voltage rails coming out of sleep, but I need to find the schematics and board view to check.
-
I will try an external cdmi monitor, which I suspect will work, but that does not help with getting sleep working.
+
I will try an external hdmi monitor, which I suspect will work, but that does not help with getting sleep working.
I am trying to fix an early 2015 13" MBP.
Got it working (mostly) except on wake from sleep (or when rebooting during an install) I lose video output on the LCD. Backlight is on (verified by turning bringhtness all the way up, I get a light vertical display output from second lids channel)
If I don't close the clamshell, use screen saver with "never sleep" timeout, it works fine (except needing hard power down if I update OS)
Unfortunately due to cats who love walking on keyboards, I need to close the lid.
I have tried:
# SMC and P/N VRAM reset
# unplug/replug battery (battery is "normal")
# safe mode
# booting external SSD (same problem)
# reinstalling OS
# googling many hours for answers
I suspect something with LCD voltage rails coming out of sleep, but I need to find the schematics and board view to check.
I will try an external cdmi monitor, which I suspect will work, but that does not help with getting sleep working.
Any/all help much appreciated,
Bill