stable-tracking test image

Petr Vanek vanous at
Tue Nov 18 06:43:46 CET 2008

On Sat, 15 Nov 2008 10:17:38 +0000
Andy Green <andy at> (AG) wrote:

>Hash: SHA1
>Somebody in the thread at some point said:
>|> echo -n 1 > /sys/bus/spi/drivers/jbt6k74/spi2.0/reset
>|> has no effect...
>|>> Actual resume WSOD should be completely gone, the WSOD from
>blanking |>> can still be around -- if you see it please cut and paste
>the |>> results from this here
>|> WSoD from blanking... One thing I notice is, that the screen does
>not |> completly blank. It's still a little gray... And another thing
>I notice |> is, that the screen is flickering when blanked.
>The flickering is the LCM reset action, it would normally be hidden by
>backlight off.  But accepting the backlight is up (I just found and
>applied Werner's patch about that) it is all correct... if I understood
>you right there is no WSOD from blanking?
>| the same for me - also ended up with wsod again after suspend-resume
>It's apparently really solved here.  This can be a clue about
>differences in individual LCM found by Harald when he tried to fix the
>blanking WSOD I suppose but it's not very satisfying.  Since the reset
>action doesn't seem to do anything it's not clear if the Glamo is
>issuing it for you (it definitely is here).
>| echo 1 > /sys/bus/spi/drivers/jbt6k74/spi2.0/reset does nothing at
>the | moment. when i tried before wsod, the screen would blink
>slightly, now
>Right, it is resetting the asic in the LCM then.
>| with wsod on it here is my bit:
>These are the registers about Glamo GPIO, they are set as intended
>after resume.  These were the problem before with Glamo unable to talk
>to LCM after resume.
>| 0050:  000f 111e ccc3 111e 000f 0001 000f 000f
>Later I will try mine again with some freezer spray / hairdryer on the
>Glamo and LCM.

i am not sure if this is helpful but i have tried to disable X and run
just the terminal. Then after suspend (apm -s) and resume the screen
remained white (wsod) again (so Xwin was not loaded at all).


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