[Bug 64332] [HD Graphics 4000] Garbage on screen on Samsung NP900X3E-A02

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64332

--- Comment #20 from Jani Nikula <jani.nikula at intel.com> ---
The link training looks suspicious:

[    9.709342] [drm:ironlake_edp_panel_vdd_on], Turn eDP VDD on
[    9.709347] [drm:ironlake_wait_panel_power_cycle], Wait for panel power
cycle
[    9.709357] [drm:ironlake_wait_panel_status], mask b800000f value 00000000
status 00000000 control abcd0000
[    9.709366] [drm:ironlake_edp_panel_vdd_on], PP_STATUS: 0x00000000
PP_CONTROL: 0xabcd0008
[    9.709368] [drm:ironlake_edp_panel_vdd_on], eDP was not running
[    9.765619] [drm:intel_dp_set_signal_levels], Using signal levels 09000000
[    9.767082] [drm:intel_dp_set_signal_levels], Using signal levels 0c000000
[    9.768537] [drm:intel_dp_set_signal_levels], Using signal levels 0e000000
[    9.770000] [drm:intel_dp_set_signal_levels], Using signal levels 09000000
[    9.771453] [drm:intel_dp_set_signal_levels], Using signal levels 0c000000
[    9.772900] [drm:intel_dp_set_signal_levels], Using signal levels 0e000000
[    9.774341] [drm:intel_dp_set_signal_levels], Using signal levels 09000000
[    9.775778] [drm:intel_dp_set_signal_levels], Using signal levels 0c000000
[    9.777214] [drm:intel_dp_set_signal_levels], Using signal levels 0e000000
[    9.778650] [drm:intel_dp_set_signal_levels], Using signal levels 09000000
[    9.780093] [drm:intel_dp_set_signal_levels], Using signal levels 0c000000
[    9.781529] [drm:intel_dp_set_signal_levels], Using signal levels 0e000000
[    9.782967] [drm:intel_dp_set_signal_levels], Using signal levels 09000000
[    9.784409] [drm:intel_dp_set_signal_levels], Using signal levels 0c000000
[    9.785842] [drm:intel_dp_set_signal_levels], Using signal levels 0e000000
[    9.787314] [drm:intel_dp_start_link_train], too many full retries, give up
[    9.787317] [drm:ironlake_edp_panel_on], Turn eDP power on
[    9.787321] [drm:ironlake_wait_panel_power_cycle], Wait for panel power
cycle
[    9.787329] [drm:ironlake_wait_panel_status], mask b800000f value 00000000
status 00000000 control abcd0008
[    9.787335] [drm:ironlake_wait_panel_on], Wait for panel power on
[    9.787342] [drm:ironlake_wait_panel_status], mask b000000f value 80000008
status 0000000a control abcd000b
[   10.039218] [drm:ironlake_edp_panel_vdd_off], Turn eDP VDD off 1
[   10.039230] [drm:ironlake_panel_vdd_off_sync], PP_STATUS: 0x80000008
PP_CONTROL: 0xabcd0003
[   10.062561] [drm:intel_dp_set_signal_levels], Using signal levels 0e000000
[   10.064366] [drm:intel_dp_complete_link_train], Channel EQ done. DP Training
successfull

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