-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi
I've just pushed a patch[1] to the 2.6.34 tree which has been proven to be quite effective, in regarding to fixing the WSOD in my 2.6.37 tree. Previously turning the screen on and off had a 60% change of resulting in a permanent WSOD. Which the patch applied I haven't seen a single WSOD within 100 display on/off cycles. You'll still see a short WSOD when turning the display on, that is because the fix add an additional delay of 100ms in the display init sequence and now the backlight is turned on before the display. To get a smooth experience the following scripts have been proven to be useful. #!/bin/sh # display_on.sh echo 0 > /sys/class/graphics/fb0/blank echo 0 > /sys/class/lcd/jbt6k74-lcd/lcd_power echo 63 > /sys/class/backlight/pcf50633-backlight/brightness #!/bin/sh # display_off.sh echo 0 > /sys/class/backlight/pcf50633-backlight/brightness echo 4 > /sys/class/lcd/jbt6k74-lcd/lcd_power echo 4 > /sys/class/graphics/fb0/blank They make sure that display, backlight and framebuffer are turned on/off in the correct order. - - Lars [1] http://git.openmoko.org/?p=kernel.git;a=commitdiff;h=43f0161295bc311d09d705db7b381653fbbb9e46 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk0bkYQACgkQBX4mSR26RiOMdQCfcYqge5XdzBOe5hTLX2ZsywaI 0+AAnjUQcvqb1d9L6RjugiQmlZPaYb8p =m5jc -----END PGP SIGNATURE-----
