[Nook HD, HD+ Android Development] tebra:
Here is my dmesg when screen flicker :

<3>[ 2852.668487] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2852.668609] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2855.748535] omapdss DISPC error: GFX_FIFO_UNDERFLOW, disabling GFX

<3>[ 2855.800811] omapdss DISPC error: SYNC_LOST, disabling LCD

<7>[ 2855.811035] novatek-panel display0: disable

<7>[ 2855.879180] novatek-panel display0: enable

<7>[ 2855.879516] novatek-panel display0: power_on

<7>[ 2856.079772] novatek-panel display0: power_on done

<3>[ 2856.609710] omapdss DISPC error: GFX_FIFO_UNDERFLOW, disabling GFX

<3>[ 2856.660461] omapdss DISPC error: SYNC_LOST, disabling LCD

<7>[ 2856.667907] novatek-panel display0: disable

<7>[ 2856.737609] novatek-panel display0: enable

<7>[ 2856.737823] novatek-panel display0: power_on

<7>[ 2856.939178] novatek-panel display0: power_on done

<3>[ 2861.375335] omapdss DISPC error: GFX_FIFO_UNDERFLOW, disabling GFX

<3>[ 2861.427612] omapdss DISPC error: SYNC_LOST, disabling LCD

<7>[ 2861.437500] novatek-panel display0: disable

<7>[ 2861.507415] novatek-panel display0: enable

<7>[ 2861.507629] novatek-panel display0: power_on

<7>[ 2861.704742] novatek-panel display0: power_on done

<3>[ 2862.064941] omapdss DISPC error: GFX_FIFO_UNDERFLOW, disabling GFX

<3>[ 2862.117065] omapdss DISPC error: SYNC_LOST, disabling LCD

<7>[ 2862.119476] novatek-panel display0: disable

<7>[ 2862.188781] novatek-panel display0: enable

<7>[ 2862.188995] novatek-panel display0: power_on

<7>[ 2862.392272] novatek-panel display0: power_on done

<3>[ 2862.581787] omapdss DISPC error: GFX_FIFO_UNDERFLOW, disabling GFX

<3>[ 2862.643829] omapdss DISPC error: SYNC_LOST, disabling LCD

<7>[ 2862.651458] novatek-panel display0: disable

<6>[ 2862.663726] ignoring apply mgr(lcd) while blanking

<7>[ 2862.721496] novatek-panel display0: enable

<7>[ 2862.721710] novatek-panel display0: power_on

<3>[ 2862.775115] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2862.775268] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2862.775451] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2862.775573] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2862.775756] qtaguid: iface_stat: stat_update() lo not found

<7>[ 2862.922454] novatek-panel display0: power_on done

<3>[ 2863.271209] omapdss DISPC error: GFX_FIFO_UNDERFLOW, disabling GFX

<3>[ 2863.323394] omapdss DISPC error: SYNC_LOST, disabling LCD

<7>[ 2863.339996] novatek-panel display0: disable

<6>[ 2863.353851] ignoring apply mgr(lcd) while blanking

<7>[ 2863.408172] novatek-panel display0: enable

<7>[ 2863.408508] novatek-panel display0: power_on

<7>[ 2863.610626] novatek-panel display0: power_on done

<3>[ 2872.918609] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2872.918792] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2872.918975] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2872.919067] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2872.919250] qtaguid: iface_stat: stat_update() lo not found

<7>[ 2874.871154] bq2419x_is_vbat_in_range: vbat = 3774000

<7>[ 2874.871765] bq24196 1-006b: bqSetSYSMIN: 3200

<7>[ 2874.872100] bq24196 1-006b: adj_fast_ichg_lim: 2036, 268, 2036

<3>[ 2882.907196] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2882.907806] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2882.907958] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2882.908111] qtaguid: iface_stat: stat_update() lo not found

<3>[ 2882.908233] qtaguid: iface_stat: stat_update() lo not found