[Nouveau] [Bug 18234] c51 lvds script failure in randr12 mode. if I start the X server the screen is black and the framebuffer too because it trys to link the whole output to the monitor

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=18234





--- Comment #2 from Stuart Bennett <sb476 at cam.ac.uk>  2008-10-26 17:07:56 PST ---
Issue can be worked around by worked around by turning call_lvds_script into a
noop.

It is possibly suspicious that in doing dpms on at the end of the modeset,
0xD3BF: [ (0x56) - INIT_CONDITION_TIME ] does not successfully complete: "
0xD3BF: Condition still not met, skiping following opcodes". A comparison xorg
log from darktama's C51 executing (almost) the same script does successfully
complete.

Thomas: after nouveau has failed to start X, does the VT return, or does the
screen remain blank until the laptop is rebooted?

Two other things to try:
1) does it work if the timeout is increased: in nv_bios.c, function
init_condition_time(), change "BIOS_USLEEP(2000);" to "BIOS_USLEEP(20000);"
2) if 1) does not work, does it work if the off script is not run: again in
nv_bios.c, function run_lvds_table(), just below "case LVDS_PANEL_OFF:" add
"return;" on a new line.


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