Hi Daniel-
Reminding you of this issue... I've sent the register dump you asked
for... You said you had an idea?
Thanks very much for looking into it,
-Kamal
On Fri, 2012-04-27 at 14:55 -0700, Kamal Mostafa wrote:
> On Fri, 2012-04-27 at 23:25 +0200, Daniel Vetter wrote:
> > Hm. Can you please install intel-gpu-tools and attach the output of
> > intel_reg_dumper? I have an idea ...
>
> Here it is with intel_backlight/brightness set to 1 ("strobe light"
> behavior occurring):
>
> PGETBL_CTL: 0x00000000
> GEN6_INSTDONE_1: 0x8888fffb
> GEN6_INSTDONE_2: 0x03305e3f
> CPU_VGACNTRL: 0x80000000 (disabled)
> DIGITAL_PORT_HOTPLUG_CNTRL: 0x00000000
> RR_HW_CTL: 0x00000000 (low 0, high 0)
> FDI_PLL_BIOS_0: 0xffffffff
> FDI_PLL_BIOS_1: 0xffffffff
> FDI_PLL_BIOS_2: 0xffffffff
> DISPLAY_PORT_PLL_BIOS_0: 0xffffffff
> DISPLAY_PORT_PLL_BIOS_1: 0xffffffff
> DISPLAY_PORT_PLL_BIOS_2: 0xffffffff
> FDI_PLL_FREQ_CTL: 0xffffffff
> PIPEACONF: 0xc0000050 (enabled, active, 6bpc)
> HTOTAL_A: 0x05d90555 (1366 active, 1498 total)
> HBLANK_A: 0x05d90555 (1366 start, 1498 end)
> HSYNC_A: 0x05a50585 (1414 start, 1446 end)
> VTOTAL_A: 0x031502ff (768 active, 790 total)
> VBLANK_A: 0x031502ff (768 start, 790 end)
> VSYNC_A: 0x03040300 (769 start, 773 end)
> VSYNCSHIFT_A: 0x00000000
> PIPEASRC: 0x055502ff (1366, 768)
> PIPEA_DATA_M1: 0x7e1380e4 (TU 64, val 0x1380e4 1278180)
> PIPEA_DATA_N1: 0x0020f580 (val 0x20f580 2160000)
> PIPEA_DATA_M2: 0x00000000 (TU 1, val 0x0 0)
> PIPEA_DATA_N2: 0x00000000 (val 0x0 0)
> PIPEA_LINK_M1: 0x00011562 (val 0x11562 71010)
> PIPEA_LINK_N1: 0x00041eb0 (val 0x41eb0 270000)
> PIPEA_LINK_M2: 0x00000000 (val 0x0 0)
> PIPEA_LINK_N2: 0x00000000 (val 0x0 0)
> DSPACNTR: 0xd8004400 (enabled)
> DSPABASE: 0x00000000
> DSPASTRIDE: 0x00001600 (88)
> DSPASURF: 0x009bf000
> DSPATILEOFF: 0x00000000 (0, 0)
> PIPEBCONF: 0x00000000 (disabled, inactive, 8bpc)
> HTOTAL_B: 0x00000000 (1 active, 1 total)
> HBLANK_B: 0x00000000 (1 start, 1 end)
> HSYNC_B: 0x00000000 (1 start, 1 end)
> VTOTAL_B: 0x00000000 (1 active, 1 total)
> VBLANK_B: 0x00000000 (1 start, 1 end)
> VSYNC_B: 0x00000000 (1 start, 1 end)
> VSYNCSHIFT_B: 0x00000000
> DSPBCNTR: 0x00004000 (disabled)
> DSPBBASE: 0x00000000
> DSPBSTRIDE: 0x00000000 (0)
> DSPBSURF: 0x00000000
> DSPBTILEOFF: 0x00000000 (0, 0)
> PIPEBSRC: 0x00000000 (1, 1)
> PIPEB_DATA_M1: 0x00000000 (TU 1, val 0x0 0)
> PIPEB_DATA_N1: 0x00000000 (val 0x0 0)
> PIPEB_DATA_M2: 0x00000000 (TU 1, val 0x0 0)
> PIPEB_DATA_N2: 0x00000000 (val 0x0 0)
> PIPEB_LINK_M1: 0x00000000 (val 0x0 0)
> PIPEB_LINK_N1: 0x00000000 (val 0x0 0)
> PIPEB_LINK_M2: 0x00000000 (val 0x0 0)
> PIPEB_LINK_N2: 0x00000000 (val 0x0 0)
> PFA_CTL_1: 0x00000000 (disable, auto_scale yes, auto_scale_cal no, v_filter enable, vadapt disable, mode least, filter_sel programmed,chroma pre-filter disable, vert3tap auto, v_inter_invert field 1)
> PFA_CTL_2: 0x00007e80 (vscale 0.988281)
> PFA_CTL_3: 0x00003f40 (vscale initial phase 0.494141)
> PFA_CTL_4: 0x00007d54 (hscale 0.979126)
> PFA_WIN_POS: 0x00000000 (0, 0)
> PFA_WIN_SIZE: 0x00000000 (0, 0)
> PFB_CTL_1: 0x00000000 (disable, auto_scale yes, auto_scale_cal no, v_filter enable, vadapt disable, mode least, filter_sel programmed,chroma pre-filter disable, vert3tap auto, v_inter_invert field 1)
> PFB_CTL_2: 0x00000000 (vscale 0.000000)
> PFB_CTL_3: 0x00000000 (vscale initial phase 0.000000)
> PFB_CTL_4: 0x00000000 (hscale 0.000000)
> PFB_WIN_POS: 0x00000000 (0, 0)
> PFB_WIN_SIZE: 0x00000000 (0, 0)
> PCH_DREF_CONTROL: 0x00001402 (cpu source disable, ssc_source enable, nonspread_source enable, superspread_source disable, ssc4_mode downspread, ssc1 enable, ssc4 disable)
> PCH_RAWCLK_FREQ: 0x0000007d (FDL_TP1 timer 0.5us, FDL_TP2 timer 1.5us, freq 125)
> PCH_DPLL_TMR_CFG: 0x0271186a
> PCH_SSC4_PARMS: 0x01204860
> PCH_SSC4_AUX_PARMS: 0x000029c5
> PCH_DPLL_SEL: 0x00000008 (TransA DPLL enable (DPLL A), TransB DPLL disable (DPLL (null)))
> PCH_DPLL_ANALOG_CTL: 0x00008000
> PCH_DPLL_A: 0x88046004 (enable, sdvo high speed no, mode LVDS, p2 Div 14, FPA0 P1 3, FPA1 P1 3, refclk SSC, sdvo/hdmi mul 1)
> PCH_DPLL_B: 0x04800080 (disable, sdvo high speed no, mode (null), p2 (null), FPA0 P1 8, FPA1 P1 8, refclk default 120Mhz, sdvo/hdmi mul 1)
> PCH_FPA0: 0x00021007 (n = 2, m1 = 16, m2 = 7)
> PCH_FPA1: 0x00021007 (n = 2, m1 = 16, m2 = 7)
> PCH_FPB0: 0x00030d07 (n = 3, m1 = 13, m2 = 7)
> PCH_FPB1: 0x00030d07 (n = 3, m1 = 13, m2 = 7)
> TRANS_HTOTAL_A: 0x05d90555 (1366 active, 1498 total)
> TRANS_HBLANK_A: 0x05d90555 (1366 start, 1498 end)
> TRANS_HSYNC_A: 0x05a50585 (1414 start, 1446 end)
> TRANS_VTOTAL_A: 0x031502ff (768 active, 790 total)
> TRANS_VBLANK_A: 0x031502ff (768 start, 790 end)
> TRANS_VSYNC_A: 0x03040300 (769 start, 773 end)
> TRANS_VSYNCSHIFT_A: 0x00000000
> TRANSA_DATA_M1: 0x00000000 (TU 1, val 0x0 0)
> TRANSA_DATA_N1: 0x00000000 (val 0x0 0)
> TRANSA_DATA_M2: 0x00000000 (TU 1, val 0x0 0)
> TRANSA_DATA_N2: 0x00000000 (val 0x0 0)
> TRANSA_DP_LINK_M1: 0x00000000 (val 0x0 0)
> TRANSA_DP_LINK_N1: 0x00000000 (val 0x0 0)
> TRANSA_DP_LINK_M2: 0x00000000 (val 0x0 0)
> TRANSA_DP_LINK_N2: 0x00000000 (val 0x0 0)
> TRANS_HTOTAL_B: 0x00000000 (1 active, 1 total)
> TRANS_HBLANK_B: 0x00000000 (1 start, 1 end)
> TRANS_HSYNC_B: 0x00000000 (1 start, 1 end)
> TRANS_VTOTAL_B: 0x00000000 (1 active, 1 total)
> TRANS_VBLANK_B: 0x00000000 (1 start, 1 end)
> TRANS_VSYNC_B: 0x00000000 (1 start, 1 end)
> TRANS_VSYNCSHIFT_B: 0x00000000
> TRANSB_DATA_M1: 0x00000000 (TU 1, val 0x0 0)
> TRANSB_DATA_N1: 0x00000000 (val 0x0 0)
> TRANSB_DATA_M2: 0x00000000 (TU 1, val 0x0 0)
> TRANSB_DATA_N2: 0x00000000 (val 0x0 0)
> TRANSB_DP_LINK_M1: 0x00000000 (val 0x0 0)
> TRANSB_DP_LINK_N1: 0x00000000 (val 0x0 0)
> TRANSB_DP_LINK_M2: 0x00000000 (val 0x0 0)
> TRANSB_DP_LINK_N2: 0x00000000 (val 0x0 0)
> TRANS_HTOTAL_C: 0x00000000 (1 active, 1 total)
> TRANS_HBLANK_C: 0x00000000 (1 start, 1 end)
> TRANS_HSYNC_C: 0x00000000 (1 start, 1 end)
> TRANS_VTOTAL_C: 0x00000000 (1 active, 1 total)
> TRANS_VBLANK_C: 0x00000000 (1 start, 1 end)
> TRANS_VSYNC_C: 0x00000000 (1 start, 1 end)
> TRANS_VSYNCSHIFT_C: 0x00000000
> TRANSC_DATA_M1: 0x00000000 (TU 1, val 0x0 0)
> TRANSC_DATA_N1: 0x00000000 (val 0x0 0)
> TRANSC_DATA_M2: 0x00000000 (TU 1, val 0x0 0)
> TRANSC_DATA_N2: 0x00000000 (val 0x0 0)
> TRANSC_DP_LINK_M1: 0x00000000 (val 0x0 0)
> TRANSC_DP_LINK_N1: 0x00000000 (val 0x0 0)
> TRANSC_DP_LINK_M2: 0x00000000 (val 0x0 0)
> TRANSC_DP_LINK_N2: 0x00000000 (val 0x0 0)
> TRANSACONF: 0xc0000000 (enable, active)
> TRANSBCONF: 0x00000000 (disable, inactive)
> TRANSCCONF: 0x00000000 (disable, inactive)
> FDI_TXA_CTL: 0xb0044000 (enable, train pattern not train, voltage swing 0.4V,pre-emphasis 0dB, port width X1, enhanced framing enable, FDI PLL enable, scrambing enable, master mode disable)
> FDI_TXB_CTL: 0x00040000 (disable, train pattern pattern_1, voltage swing 0.4V,pre-emphasis 0dB, port width X1, enhanced framing enable, FDI PLL disable, scrambing enable, master mode disable)
> FDI_TXC_CTL: 0x00000000 (disable, train pattern pattern_1, voltage swing 0.4V,pre-emphasis 0dB, port width X1, enhanced framing disable, FDI PLL disable, scrambing enable, master mode disable)
> FDI_RXA_CTL: 0x80022350 (enable, train pattern not train, port width X1, 6bpc,link_reverse_strap_overwrite no, dmi_link_reverse no, FDI PLL enable,FS ecc disable, FE ecc disable, FS err report enable, FE err report enable,scrambing enable, enhanced framing enable, PCDClk)
> FDI_RXB_CTL: 0x00000040 (disable, train pattern pattern_1, port width X1, 8bpc,link_reverse_strap_overwrite no, dmi_link_reverse no, FDI PLL disable,FS ecc disable, FE ecc disable, FS err report disable, FE err report disable,scrambing enable, enhanced framing enable, RawClk)
> FDI_RXC_CTL: 0x00000040 (disable, train pattern pattern_1, port width X1, 8bpc,link_reverse_strap_overwrite no, dmi_link_reverse no, FDI PLL disable,FS ecc disable, FE ecc disable, FS err report disable, FE err report disable,scrambing enable, enhanced framing enable, RawClk)
> FDI_RXA_MISC: 0x00000080 (FDI Delay 128)
> FDI_RXB_MISC: 0x00000080 (FDI Delay 128)
> FDI_RXC_MISC: 0x00000080 (FDI Delay 128)
> FDI_RXA_TUSIZE1: 0x7e000000
> FDI_RXA_TUSIZE2: 0x7e000000
> FDI_RXB_TUSIZE1: 0x7e000000
> FDI_RXB_TUSIZE2: 0x7e000000
> FDI_RXC_TUSIZE1: 0x7e000000
> FDI_RXC_TUSIZE2: 0x7e000000
> FDI_PLL_CTL_1: 0x7e000000
> FDI_PLL_CTL_2: 0x7e000000
> FDI_RXA_IIR: 0x00000000
> FDI_RXA_IMR: 0x000008ff
> FDI_RXB_IIR: 0x00000000
> FDI_RXB_IMR: 0x000008ff
> PCH_ADPA: 0x00f40000 (disabled, transcoder A, -hsync, -vsync)
> HDMIB: 0x00000018 (disabled pipe A 8bpc SDVO DVI audio disabled +vsync +hsync non-detected)
> HDMIC: 0x0000001c (disabled pipe A 8bpc SDVO DVI audio disabled +vsync +hsync detected)
> HDMID: 0x00000018 (disabled pipe A 8bpc SDVO DVI audio disabled +vsync +hsync non-detected)
> PCH_LVDS: 0x80200302 (enabled, pipe A, 18 bit, 1 channel)
> CPU_eDP_A: 0x00000018
> PCH_DP_B: 0x00000000
> PCH_DP_C: 0x00000004
> PCH_DP_D: 0x00000000
> TRANS_DP_CTL_A: 0x60000418 (disable port none 6bpc +vsync +hsync)
> TRANS_DP_CTL_B: 0x60000018 (disable port none 8bpc +vsync +hsync)
> TRANS_DP_CTL_C: 0x60000018 (disable port none 8bpc +vsync +hsync)
> BLC_PWM_CPU_CTL2: 0x80000000
> BLC_PWM_CPU_CTL: 0x00000001
> BLC_PWM_PCH_CTL1: 0x80000000
> BLC_PWM_PCH_CTL2: 0x13120000
> PCH_PP_STATUS: 0xc0000008 (on, ready, sequencing idle)
> PCH_PP_CONTROL: 0xabcd0003 (blacklight disabled, power down on reset, panel on)
> PCH_PP_ON_DELAYS: 0x025807d0
> PCH_PP_OFF_DELAYS: 0x01f409c4
> PCH_PP_DIVISOR: 0x00186905
> PORT_DBG: 0x00000000 (HW DRRS off)
> RC6_RESIDENCY_TIME: 0x02fb9ec6
> RC6p_RESIDENCY_TIME: 0x00000000
> RC6pp_RESIDENCY_TIME: 0x00000000
>
>
>
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