On 17 October 2012 00:43, Daniel Vetter <daniel at ffwll.ch> wrote: > On Tue, Oct 16, 2012 at 6:10 PM, Daniel J Blueman <daniel at quora.org> wrote: >> [drm:intel_dp_init], cur t1_t3 0 t8 0 t9 0 t10 0 t11_t12 4000 >> [drm:intel_dp_init], vbt t1_t3 0 t8 0 t9 0 t10 0 t11_t12 0 >> [drm:intel_dp_init], panel power up delay 21, power down delay 50, >> power cycle delay 400 >> [drm:intel_dp_init], backlight on delay 5, off delay 5 >> [drm:intel_dp_init], panel power sequencer register settings: PP_ON >> 0x40d20032, PP_OFF 0x1f40032, PP_DIV 0x186904 >> [drm:intel_dp_i2c_init], i2c_init DPDDC-A >> [drm:ironlake_edp_panel_vdd_on], Turn eDP VDD on >> [drm:ironlake_edp_panel_vdd_on], eDP VDD already on >> [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x514500c8 >> [drm:intel_dp_i2c_aux_ch], aux_ch failed -110 >> >> Notable, the nvidia DP init script executed fine; perhaps tracing the >> I2C access may be useful? > > Hm, dp aux transfer don't work (this is the first one in the setup > sequence, so it's not an i2c over aux issue with the edid read). I > guess the mux is getting in the way. Dave, do you have an idea what's > still going wrong? panel power sequence is now operationl. For > reference, the wip patch series is at: > http://cgit.freedesktop.org/~danvet/drm/log/?h=for-pzanoni Booting for-pzanoni as of today, when switching to i915, the backlight turns off [1]. Full boot log at http://quora.org/2012/mbp-i915-panel-3.txt ; the same situation occurs on 3.7-rc2 alas. Is there a way to trigger re-enumeration of the panels after I switcheroo to i915? I'm checking with Seth if the mux could be the issue, though the code shows there would be an error message if switching failed. Thanks, Daniel --- [1] [ 3.522057] [drm:intel_dp_i2c_init], i2c_init DPDDC-A [ 3.522060] [drm:ironlake_edp_panel_vdd_on], Turn eDP VDD on [ 3.522066] [drm:ironlake_edp_panel_vdd_on], eDP VDD already on [ 3.524598] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x514500c8 [ 3.524601] [drm:intel_dp_i2c_aux_ch], aux_ch failed -110 [ 3.527121] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x514500c8 [ 3.527123] [drm:intel_dp_i2c_aux_ch], aux_ch failed -110 [ 3.527144] [drm:ironlake_edp_panel_vdd_off], Turn eDP VDD off 1 [ 3.527147] [drm:ironlake_edp_panel_vdd_on], Turn eDP VDD on [ 3.527150] [drm:ironlake_edp_panel_vdd_on], eDP VDD already on [ 3.529677] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x514500c8 [ 3.549595] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x514500c8 [ 3.564443] input: Apple Inc. Apple Internal Keyboard / Trackpad as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.8/2-1.8.2/2-1.8.2:1.0/input/input4 [ 3.564721] apple 0003:05AC:0262.0001: input,hidraw0: USB HID v1.11 Keyboard [Apple Inc. Apple Internal Keyboard / Trackpad] on usb-0000:00:1d.0-1.8.2/input0 [ 3.569584] [drm:intel_dp_aux_ch], dp_aux_ch timeout status 0x514500c8 [ 3.587024] [drm:ironlake_edp_panel_vdd_off], Turn eDP VDD off 1 [ 3.587035] [drm] failed to retrieve link info, disabling eDP -- Daniel J Blueman
